SCIENTIFIC ABSTRACT BASOV, N. G. - BASOV, S. M.

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December 31, 1967
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:STR,-fsF.IIOV","Kj7P G.M.; N'-KIT-!Il, A.I.; 1411KIT111A, TI.F.; TATARENKOV, V.M.; TLOIFENSMY, A.V. lAser operating on a bob-m of hydrogen atoms. Radiotekh. i elektron. 10 no.10;1809-1813 0 165- (KRA 18:10) BASOVY N.G.; GWS'Am, A.Z.; ZUBAM, I.G. Sens.1tivity of a laser operating on neodymium glass. Zhur. prikl. spekt. 3 no.1:26-31 J1 165. (MIRA 18:9) .- 1. --, -. , ~ - - -, -- I - -~ - . ; ~;~ , L 9461.-66: FBD/EWr(l ')/EEC(k)-2)t/EWP(k)/EWA(;)-2/gWA(h) wrB/ijp(c)_ wG ACC NNs AP5027406 SOURCE CODE: UR/0181/63/OOT/On/3289/3293 AUTHOR: Basov, N., 4q POPOV Yu. M. :Bog4ankLivich, 0. V. ORG. sics Institute im. P. ~Lebedev,,AN*SSSR (Fizicheakiy institut ANPSSR) jq TITLE- Generation of short-wavelength radiation ang lifetimes with re-spect.to spon taneouG emission in semiconductors SOURCE. Fizika tverdogo tela,,v. 7, no. 11, 1 65, 3289-3293 .9 TOPIC TAGS: semiconductor, semiconductor laser, electron beam laser- eqy ABSTRACT: The possibility of fabricating electrM.;beam-pumped semiconductor lasers generating. in the ultraviolet spectral range, is discussed. The analysis is* limited. to direct Interband transitions.and does not include the case when carriers must be.- treated as polarons. It is.shown that the lifetime of excess carriers with respect to interband transitions,accompanied by emission of a photon is inversely proportional.,' to the energy 4idth of the forbidden-gap." -The lifetime of radiationleis transitions .is thus neglected in the analysis'. Expressions are derived for the ~ minimal pump power and the optimal duration of the excitation pulse. It is suggested thathigh~- purity ZnS,.aluminum andboron phosphides, corundum, and other wide-gap semiconductors,- should be tested for laser action in the ultraviolet by means of electron beam ex- cit, gtion Orig.. Prt. hist'' 114ornpilas.' [Cal SUB COME: SUBM DATE:_28may65/. ORIG REF: 0081. 0TH R": _005/ ATD Vl- EWA(k)&EQ &Fr Ck).~I~ 4004 ) 411122(k) 4POW At IMA-( 4964-66 ., --ACC NRt 'APS027449 SOURCE C07Dis 6Q0l8iA5/0bN1l'j3'460/3~e1 SCTB/Ijp(c) Wd/jP/J7G T11 ~ - A h kL l h A t aro Tuo Po; Ni eronovi ,AUTHORs Basov, No Go; Zak ng VOY9, S . ORO I phzzics Instl L*'bed*v,-_'AN,SSSR-9~ Moscow Aue4uy- tu te. kly~lhstltUt A N SASE) -TITLE:, Interaction between.optically coupled GaAs diode lasers, SOURCE s Fizika tvardogo teliq v, 7. no. 119 1965, 346063461 - - - 11 I in - d A lid l1 I l a a a as i at ium r n TAGSs, so a aser eau ate ga TOPI aser, 99 ~ lagar'synchronizat ions, laser, 'beam,, beam"quenc ins ~-ABSTR M Two systemi.of optical coupling between p-n GaAs Atodis 'A. .I . I . lasers-'longitudinal." in which laser beaus coincideq and "transverse,,- in which they are.parpondicular to each other--i-were investigated* 0 Y-Parot X080- both ed'sas, the diodes veto prepared in.the form of Fabr ~_nators and:set,.up on the same substrate from 5 to 100. ti apart. . The,~ ef f activeness of beam quenching' f or- the transversely coupled lasers . , was was 1%, The wavelength of. quenching laser'emission grea.ter, - than that of the quenched and the~baam entered the quenched; laser Aaterallyu Beam quenching inllth.a~longitudinally-coupled system was observed only~when the.wavelengtb of the-quenching emission was greater than tbat.of the quenched* Similar effects were observed elsewhereA,,.".A. CaM' 1/2' L 0-66 ian/EWT(12AWP(e)/EWT(m),~EEC(k)!~jt/EWP(t)AWP(k)/EWP(b)/EKA(m)-2/tWA(h ). L -0'4 ACC N& ACC N1h AP6=868 SMAM0 WG/JD SOURCE CODEz UR/0181/65/007/012/3639/36hc , OR. AMMOR: Grasyuk, A. V.; ZLbarev, I. G.; KaWlin, V. A. 14 [A~ ORG: ics Institute Im. P. N. Lebldev, Academy of Liences SSSR (Fizic eckly Institut Akademli nauk W310 TITLE: Laser action in CdS due to optical excitation by radiation from a IaLbv laser -77~rYf SOURCE: rizika tvardogo tela, v."7,.no. 12t- 1965, 3639-3640 TOPIC TAGS.- laser, semiconductor'laser, ruby laser, nonlinear optics, two photoij. absorption ABSTRACT:'.Laser action is reported in CdS excited by a ruby laser at 77X. Since the energy.of photons of incident radiation (A =.1.T8 v) is smaller than the width of the forbidden gap (2.5 ev), two-photon absorption was,responsible for laser action. A 5 x 3 x.3~mm sample forming a Fabry-Perot cavity was'excited by radiation from a 1--j ruby laser (pulse.duration 'u50 nseic). The emission spectrum from CdB at various pump densities (see Figo.1) is .similar to that of electron-beam-pumped CdS. The broadening of the oscillation line with higher pump power was attributed to an in- ;crease in the number of modes; however, a resolving power of I did not make it pos- Z- I - - .i B450V N.2j. MCROZOVI V.N.; OHAYEVSKIT, A.N. :==I-.= Nonlinear interaction of various kinds of oscillations in a laser. Zhur. eksp. i teor* fiz. 49 no,3:895-,901+ S 165. (MIRA 18:10) 1, Itzicheshy institut imeni Lebedeva, All SSSR. WOV, N.G.; LETOKHOV, V.S. Propagation of a light pulse in a medium with inverse population. Opt. i spektr. 18 no.6:1042-1046 Je 165. (MIRA 18:12) L 10396-66 ACC NR:_','AP5026900 em uses. ordinary NSSM pumps in-the first sect ons ands an ion-so4tion titanium pump in the last section.to achieve a vacuum of 10 torr. Other pa:rts; 4 of QG are::- 4 - quartz teflon-lined bulb, issonaton 6 - solenoid, for building an a3dal Im,agnetic field;7 magnetic shield -; 8 -,coupling loop. A 0.01~0.02-sec mp ng pulse, at a frii4iiii-n'iEi-ib:eresponding.to 21 cm transition,; produced a i OU i ;post-radiation for 0.2-M sec. The total estimated and measured relaxatioi constant was about 2 per-sec, .which corresponds to a iffetime of 0.-5 me c~ Datao~~_ frequency s%ability and a EtApalsogiven. "The authors wish to thank A. A Prokhor~OAd A~ N. OrMiiski for discuosing.the results and valuable advice;. and L.- P. Yelidnas G. A. vrelkin, A. N. PSM L. M. Z Up A. A. U1 'Xinov ak' MUM 1, 0 fe. I N. A. Be S. R~376'r4; for their assfA"ci_In the_7Vdjaa.,I. _9 art. has: ex and 6 formulat'01, J_- r A..i !SUB CODE: 20 SU13M DATE: IOW64 ORIG REF: 000 OTH.REF-. 004 Jx CCWd BASOV N.G.- ZAKHARCV, Yu.P.-, NIKITIN, V.V.; SHFRONOVf A.P. ~ A Laser on a GaAs p - n-J~inctlon wlth nonuniform WaLributilon of the Injection current. Fiz. tvar. twela 7 no.100128-3130 0 165. (MIRA 18i11) 1. Fizicheakiy Institut imeni Loebedeva AN SSSR, ~bskva. ~' isAr - , -- I :4n. ; -~ .-I.; '! Al Fk, p , .".; . 11 , . Geric:-Ij4.jon in W-, in tion-pYclcr) optl,~ftl Irj from a niby lf~ier. Fiz. iver. tela 7 no. 12:316icl-liLl it 165 1, 1,1, 1 ~A, 1()31) 1. Ti,-Jiheslkly institut ima:.t 4b~iovn I-N' 71"R, Mosl,.m. BASOV. 1.G,; GRASYUK, A.J21.1 ZUBARTW, I.G.; KATULIM, V.A. Generation in GaAs in the case of Wo-photon optiml exeita- tion by radiation frcm a laser operating on noodyalun glass. Pis'. v red. Zhar. eksper. i teoret. fiz. 1 no.4%29-33 My 165. (MIRA 18gll) 1. Fiticheskiy institut imeni Lebed6va, AN S&SR. Submitted kpril 16, 1965o L 23290-66 EEC (k)4/"(b)~&iP(k)/EW? (1)/FBD/T XJF(0) WQ: ACC NR- AT6009312 SOURCE COE: UR/2504/65/03:L/000/0074/0095- AUTHORS:, Basov N. Gj Grasyuk,' A. Z. Zubarev, 1. 0'. T6 ve le v L. - V' i.ORG16 hvsic 8 InstitiAe im.- P. :.N, Le b ftLev, Academy of Sciences SSSR Fizicheakiyinstitut Akademli,nauk SSSR) TITLE: Regenerative optic,guantum amplif1gra SOURCE: AN SSSR. Fizicbeakiy institut. Trudy v 1965. 31- Kvan't-ovayatradiofizika (Quantum radio physic8l, *'4 -9' 7 5 TOPIC TAGS: laser ap Ii atio image am p c . n plification, molecular. amplifier, ruby laser, amplifier design quantum electronicai electronic ~F amplifier, coherent light,, light emigSiOn i ABSTRACT; An optical quantum amplifier is definedas a device in which' .`-coherent light emission is amplified.by using the laser principle, and tbe.authors deal with the~properties of regenerative optic quantum:amplifiers and,way6 of their practical utilization. The article -is devoted,.to.the,fundamental theoretical relations neces Card. 1/2 roll Wo A -0 MM-M TPA ACC'.NR:-AT6O0q3l4 SOURCE CODE: UR/2504/65/o3i/ooo/ow/61~8 G AUTHORS ~Belenov, E..M.; Mark1n, Ye.- F. X kitin: Orayeirgk1j, A. N. I ORG., Ph-vaics InstitUte P, 'N, Lebedev, Academy--og W (Fizicheskiy institut-Akademii nauk SSSR) )Jd -of A n -a gas-mixture lai. TITLE: -,Investigatio ier V. SOURCE*.. -AWSSSR. Fizicheskiy institut. Trudy 53., 1965.; vantovaya radiofizika"(Qua:ntum,radio physics 115-1 K 38 -laser -r and d, laser beam, laser modulation"' TOPIC TAGS: gas laser,, AB TRACT: The purpose or this combined theoretical and exp6riment&i..i.-, -to'assess the possibility of increasing the power i investigation:was of different gas lasers by aboosing optimal operating conditions .(pressure of mixture, .-partial. pressures. of the individual component3,,--1.~1',-- mirror-tra o coefficient, diameter and length 'of ..pump power nsmissi n The.divergence of the beam and the spectrum of': the" discharges venerated radiation'as.,functions of the outward power of the genera-.- Card 1/2 -66 b23391 ACC NR: ArM6090F, ng a neon helium mixture and a tor a.re also Investigated.- UsL -power of 100 MW A t special laser design., , the, authors obtained a 1.15 IL with an optimal:tube radius of 8 mm and len th 3 meters. 9 The angular modulation characteristics were measured as a'funotion of the output power. Reduction of the beam divergende,by~filtering out .certain modes is'discussed. Rotating7la6er:apparatus construe-' ted for'tbe measuremenVof the. laser emission spectrum (a modifica- tion .of the Sagnac experimnt)-is described. The'results show that:.',;' tbeoutput power of_~tbe,laser can be increased by adding;a. buffer gas,to intensify tbe,decay~of the metastable neon,, by increasing the temperature of- the Vorking gas, by using pulsed' exe i tat ion'to .1, ~popu e I -- late -the upper*,working level., I?y increasing th- : resoziator'length,*~. and-the~.'Iengtbof tbe.-discbarge tube.,' and-by decreasing the trans- verse dimensions,,'of:tbe discharge tubee''The authors,thank Yu. Trokhin. V. N. Lukanin B. I.-Prokmov.B. I. Belov, F. S. Titov -and A. F. Sue-hkoy fort discussion of the.-results and help, with th'e calculations. Orig art..' bas 16: f igure s. and' 13 formulas. SUB Com. 20/ ORI-G.-REP,.--022/ -0TH REF:I 020/ sUBM: DUE. no A Card :.2 L 22192-66 M(~)/ W/~ up (t) IJP(c) ACC. NRO AT6009315 SOURCE CODE: UR/2504/65/031/000/0139/0177 i~AUTHORS*. Baa&"N akbovskiy, G. M.; Nikitin Str A. I.j 76 T. Tatarenkov, v M.; uspenski V. Nikitina.. ORG: Pby tituiaim. P.: N. Lebedev demy of Selene, SR', sies Ins Aca esj.SS (Fizicheskly Institut Akademii nauk,SSSR) '.-TITLE:' Problems of.construction:.and investtgation of the operation 1,,of,a.hydrogen-atom-beam maser SOURCE:' AN'SSSR. Fizicheskiy inbtitut. Trudy v. 31,-1965,. 1~vantovaya radiofizika (Quantum radio pbysics).f 139-~177 TOPIC TAGS: masers theory, gaseous state maser, hydrogen, maser, ,.quAntum ge- tor'-excited state, stimulated mission e nera A ':"ABSTRACT; The -author's _preview the hitherto publ~abed work on the theory and construction of b~drojen-beam mase d discuss the con- ~Tv structionj eboice.of optimil-parameters, and preliminary operatin 9 results of a maser.~using-tbe.transition I M.F 0) (F' 0 ard L23392-66 ACC NR: AT6009315- _,7_777~-_ -0) at 1420.405 Mcs. Two installations of different constructiml are' described. The -operation.of'the maser -in the underexe ited - mode ~:.is investigated. A procedure for determining' the lifetimes of the I --excited atoms in the ztora:&~ bulb are described. Theapparatus was operated with an axial resonator magnetic field of 100 -- 300 ThOe The dependence of the amplitude'and1frequency,of generation on-the: various parameters was Investigated and it was found that the'grea_t- contribution to- the maser, instability is due to- the instability*. ~'of: the supplementary magnetic field and tbe-detuniing of the resbnatori,, overcoming as a result.of thermal expansion, Methods of these dif- ficulties are discussed. The section headings are: Introduction. -I. Construction and.adjustment of hydrogen-beam maser.. 1. Operating' principle of hydrog6n-beanmaser. 2..Vacuum system. 3. Atomic-be-am' -sources'. 4; State sorting and'atomic-beam focusing. 5. Detection --of hy tus.. 6.'Buib I drogen-atom beam. Metbods.of adjusting the appara ~f mulation of~atomic hydrogen- 7. Cavity resonator.-. 8. dia or accu Ra r 1420 Mes,frequenoy.'' II. Inve ;.tion receiver fo stigation of opera- (preliminary.results). i' tion of hydrogen-beam maser Investigation' -Of stimulated emiaoion of -atomic hydrogen at 1420.4 Mos. card 2/~ A. --v 'A.- A..-Ull N. Po Inom.re yanov, L and:-.tO -.8. " - - P Ly r v -for - help-witb th sogo 0 e work. r g. art and,, aB f gure a. . Z 7h 69 formulasiL 20/, ORIG REP CODE: :- 21/ OTH REP: L 034 / s UBM DATE: noj~e ard J C f Q IEWA-(h) 1JP(-c I LIM '1- CODE t UR/10U3765jW5-/0W/W5/059U- 9 3VURC8 AUVOR: Basov. N ORG' none*. Semiconduct2r, 3ASOrli I TITIE .4, 1965, 585-598 soun Uspokhi 4- ziefisakft rauk, v. 85, no. TOPIC TAGS: semiconductor laser resonance absorption, electron hole, semiconductor devico, optic pumping ABSTRACT. After an introd .uction whIich describes the differences in the theoretical. and experimental approaches to physics and their interrelations in such areas as the creation of quantum generators (lasers),-tho author presents a popular-leve discussion of the operating principles of A semiconductor laser, including the'three' following processess- resonance-absorption of lij;ht by the semiconauctor,resulting in tho formation of electron4ole pairs; induction radiation of light as it,talls on tho semiconductor; and spontanoous radiation upon recombination of electron- :hole pairs. Semiconductors are reported tobe suitable for radiation of coherent. enerMr from the far infrared to.the ultraviolet are" of the spectrum. Conditiona for obtaining minus temperatureel,in which all the levels in the W conductivity.. zono.are occupied by elootrons but holes exist in-the valent zone so that the semi- conductor can radiate but cannot absorb light, are described.for direct arA indirect transitions.. Hathods for producing negative temperatures include optical pumping,. excitation of the semiconductor by rapidelectrons, and injection of electrons and holes across the p-n junction. Atable of the various "a of semiconductor 14639n. 1/2 Card UDC: 621-375*9 LA20515-66 EWA(h) k)j ( IJP(a) WG ACC NN AP60l.1996. SOURCE CODE: UR/002.0/65/161/004 99 .01 AUTHOR: Basov N G (Corresponding 'member AN SSSR); Belenovp E. M.; Letokmlhovii S. OK: !!!Ysics Institut- im Pe N. Lebe'deh AN SSSR (Fiziche5kiy itistitut-AN SMR)~ MILE.~ Limiting arose-section of a laser:bAtam AN 3WH. 16 Otoo Doklady, v. 1 4#L1965P 799--801 TOPIC TAGS:. laser beam, laser theory ABS TRACT: In principle, 'L beam cross~-sections,Of continuou3ly~bperating lasers having large re5onators can be limited ovine to the delayed interaction of remote parts of the.lase.- or misratchina of the natural frequencies of the-various parts of the re6ona';or. In C.-modulaied pulse laser's.the beam cross-section is limited becauso -the Pul*a Gcaara'tion tioa is of the ord Ler of time required for theLresonator o.scilla%icns to become establishedi. Beams of bozh types of laser are considered. in ihe.first case the problem is tioate'd lb'y splitting the laser inTo. two coupled 11sublasers" and then analyzing the.interaction-. In the second case, generation can .40cctx in one of two modest A) development ol' individual incoherent "stroams", and: b)'confluence of adJacent "stream" with coherence beaomin4g established due to 4if- traction field exchange. Under. the 4ven conditions the. ms:ximtim cross-aection of generation in orse I is about 5 on;. In oaze.2 it is 6 and 4 maq reepwtiv4I for the two modes, The authors thank V. N. 116rozov for a series of useful discussions* 0r,&._ art. has:~ 8 formulas. [JPRSj__ SUB COM 20 -SUBHDATES 24Nov64 ORIG REF: fas, OM 004 OM TWO.) ACC NRI APM$754- -CME: WOO/66/003/0()6/0261/02& SOME id=OH: Ambutsummn, R, V" G*. Kryukov, P. G.: latokhoy, V., S. opa: r1waica 'k Is, P- No keb4dWip`- Of Saiebees JQS R fL_ (Fizicheskiy at Ake4emll naux 8WH) w TITLE: Lase :Wpi sonant feedback nbil'=W i te0ret1dhe8bDy.fiziki. Pis tma Y. redak.tsiYU., ~ftilczhenlrep ve 3P no* 6,9 261-2& TOPIC TAGS laser r and 4,v ruby 1"erp laser beam,, light scattering,,: laser optics ABSTRACT: The authors report whievement, of laser action with nonresonant feedback, produced by back-scattering from a volume or.a surface., iihich behaves. like a"sto. ebastic" resonator with a continuous ~nxturial-frequency spectrum. The lasing-fre quency ,does not depend on the-length of the resonstor,, but is determined by the resonamt, fro- ,quency of the. active medium. In this laser (7ig. 1) the active medium cc W ised tvo Fig. 1. Diagram of Pizparlsent, 1 Seat- -tererp 2#3 - r Ir tiltery, 6 - A ~dtodell# 7 -Oscilloscope- Cam '~iy% k_4583-66 ACC Nki AP6W8754 ruby crystals in seriesp each 24 cm long and, 1*8 cm, in diameter. The feedback. was -produced with the aid of a mirror (reflection.99%) &rA a volume.scatterer (suspension of chalk particles in water) or surftce scattem (plate with a layer of sputtered *0). The light was recorded with a photocell and oscilloscope, and its spectrum was mas=ed with a Fabry-Perot interferometer. :The gain of a weak signal in one passWj through.. the two crystals -reached 900. The condition of self excitation of the laser Is described. - The lasing threshold islaund to be practical1y' independent of. the :angle, of'Inclination of the scatterer$ over a wide range, but increases with increas F . distance between the scatterer and the, crystal. The radiation line width va4 smaller Ahan 0.0115 cur,'L and was det ermined by the resolution of the interfeimmeter(the spon taneous emission line width of ruby is 15 cmCl). An investigation of, the beat! iadiaw-i has shown that there are no frequencie's characteristic of lasers -~ith-771 resonant feedback* The angle apread of the. beam. was proportional to the ratio of the crystal diameter to the, sveMe distance. between the mirror and the scatterei. The -distribution of the radiation field in the far zone was quite homogeneous. A pulse with duration 200 *nsec was obtained in -the. case of Q~-switching of the stochartic rea- onator. The average frequency of the generated radiation in the laser with non"so- nant feedback was determined by, the position of the center of the atomic transtiionp and not by the resonance of the feedback. It in consequently possible to produce:an- optical frequency standard an the basis of a laser with nonresonant feedbaqJ4~ usir 4g~ higb-gain abomic transitions - in; a gas disebarge'(Nep. Xe, etc.) owating,.U Abe eon- tinuous modes and also scAtterers with narrow back-scattering directivity pattern*. cord 2/3. L 22478-66 FBP/FAT(1)jW(M)/EEG(k)-2/T/E0 (t)/39(k)/1WA-(h) IJF(c)- o"liD 'UR/0181/66/008/001/0021'/0023- ACC NR- AP6003754 SOURCE CODE: AUTHOR: B06ov, N. Q. ORG: PbYsics Institute im. P. N. Lebedev AN SSSR. Moscow (FUichealdy institut AN SSSR) TITM _I&ser operating on 9-4uum arsenide with. excitation by means of fast electrons ix SOURCE: FizikEt tverdogo tela, v. 8, no. 1, ~1966, 21-23 70PIC TAGS: laser, solid state laser, semiconductor laser, laser emission ABSTRACT: A descri ption is givenLd a laser excited by a beam of fast electrons. The carrier concentration was lots -100 cm-3 and'amob1lity6x103cn--v -sec, at T 300 K. The pulse duration of the electron beam was 2 psee, the repetition frequency was 50 cps, and the electron energies were 50 or 200 kev. The GaAs specimens had the form of a rectangular parallelepiped. The emission spectrum. of all. investigatid specimens was practically the same. The dependence of emii- sion intensity on the current density of the electron beam varied-from specimen to specimen within a small range and depended on the quality of the resonator. The - Card 12 21412-k6 EVpfe)IE,~r(m)/ja6(f)O(EW,(m)/EWp(+) T IR "--ACC NR& AP6009664 SOURCE CODE:, UR/018i/66/006/063/6802/0804 .AUTHOR: Basov, Devyatkov, A. G. _~N., G.,-,,Bogdankevich, 0. V 1;1 ORG: Physics Institute Im. P. N. Lobedev, AN SSSR, Moscow (Fizicheskiy.-institut AN SSSR) TITM., Recombination-radiation of a-SiC excited by electrons SOURCE: Mika tvardogo tels, IV. no. .3,.1966, 802-804 TOPIC TAGS: silicon carbide, recombination radiation, semiconductor ABSTRACT: -The recombination:radiation of 1 x 2 x 3 mm samples of a-SiC with polished sides excited, by a bean of 2004ev electrons was investigated '~t a tempera- ture of 60K.- The electron beam was either perpendicular to the large face of the sample. or at a 45* angle to it. The bean's penetration depth was determined to be- -120 U.- The emission spectra,of three of the siam Ila are shown in Fig. 1. A detaileid-:. spectrum observed in the region between 4700-4850 A is shown in Fig. 2. The energy difference between the lines.in the 4700-4,850 region, indicating some-kind of -Card A I& L-- 21412 -66 ACC NRs AP6009664 Fig. 1. -Emission spectra of eg -SiC at 60K and at a current'density j 140 'ma/cm ' -numbers inAcate samples: 1 .-.bluish- The, -industrial-type crystal; Uzr c 1 greenish 0 or- -type cryst~al do-j4d vitk less compensated p t,1017 impurity.atois per cm3;-4 boul purest.. a : sample vith anAmpurity concentration 0 f 7 x I A M aw % , S * L 21412-66 ACC NR# AP6009664 connection between the lines, is tabulated.in Table 1. No-stimulated emission was' observed In the experimentse Orig. art. has: 3 figures and 1 table. [CSI ,SUB CODE: 20/ SUBH DAM 26Jul65/ ORIG REF: 003/ OTH REF: 6031 ATD PRISSf Li X*z L 2100 -=(k)-2/ZWA(h)/W(1)/FM/T/zWP(kr Wo ACCESSION NR: APS024711 UR/0056165/049/003/0805/09-04 AUTHOR,, Basov.-M3 G.% Qrusvakfx~ A. N $grozov, Vs TITLE: No*nlinear mode Interactionlin aim=gj~* SOURCE:. Zhurnal eksperimentallnoy t teoreticheakoy fiziki, v. '49,.nd. 3,J965, 895-904 TOPIC-TAGS: -laser,.stimulated'6mission, nonlinear optics, oscillation-mode ABSTRACT: A theoretical analysis is-,conducted of the operation of a-two-mode solid state-laser. It to shown tha .t-the:mode inter'action can be described by a set of rate equations and that the steady-state regime is stable. The solution,. of the system of equations: depends on the frequency difference of the modes. The two possible cases,, nearly biharmonic and itearly har. n1c.oncillations, are,analyz do In the case of, close modest the steady-state regime may be unstablet resulting 'in appearance of undamped spiking. The, laser operating. regime to shown to depend on the shape and position of the mirrors and the quality of the crystal.- Orig..art.',, has: 17 formulas and I figure*. ICS1 ASSOCIATIONi Fizicheakiy Institut Im. P. N. Lebedeva Akademii nauk SSSR (PhXs1C8__- Card 1 . ...... L 210 ACCESSION NR*. AP5024711 SUBMTT ENCL. :00 ED.- 03Ap r63 E c"'ss SUB CODE.* NO REP SOVs.. 010 OTHER: 012* ATD PRESS: L- 2-1840-66 EM(k)-2/EWA(h)/ZWP(k)-/EWT(I,)/FBD/T- - IJPW AC-CNItl AP600W,3 S?URCE-CODE44- UR/0056/66/050/001/0023/0034-~ AJJTHOR: Basov, N. G~ Ambartsumya!k R. Zayg~,r VEL, Kryulwv, P. Q,'Letokhov, V S. ORG: Physics Institute im. P.N Lebedev, Academy of Sciences S8SR (Fizic skiy institut Akademii nauk SSSR)- TITLE: Nonlinear amplification of a light pulge SOURCE: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, v. 50, no. 1, 1966 23-34 TOPIC TAGS: laser, nonlinear,optics, stimulated emission, quantum amplifile' ABSTRACT: A theoretical and e erimenial analysis is made of the passage o f XP a powerful light pulse from, a. laser through a laser amplifier consisting of two ruby rods operating in a saturation regime. The preliminary experimental'results have already been reported.,(Akademiya nauk. SSSR. Doklady, v. 165, no. 1, 1965, p. 58-60 (see ATD Press, v., 4, no.: 138, p~ 7-8)). In the experiments performed,' it was shown that as the result of nonlinear. am ication the velocity of the pulse plif Is 6-9 times greater than the velocity of light in vacuum. To decrease. the pulse duration during nonlinear amplification, the slope of the incident pulse should be1 'Card 1/2 t--(- - - W G L_ 22769-66--- FBV EVT(l)/EEC(k)__0jEWP.(k /E*W (h) JP __XCC_iTR_t_AP60lO975 SOURCE CODE: UR/0056/66/050/003/0551/0559 Mmlok: Basny rasyuke A.' Z. Zubarevi 1. G.; Katulin, V; A.,- Krokhin, 0 On: Physics Institute im. P. N. jaedev,"Acadew-9 sciencqq SSSR.JPizicheskiy k institut Akademii nauk-SSSR) TITLE: Two-photon optically.excited semiconductor lasel- SOURCE: Zhurnal.eksperimental'noy i-tearaticheakoy fiziki, v. 50, no# 3,,19666 551-55S TOPIC TAGS: laser, semicooductor.laser,'nonlinea opticaj two photon absorption,. r F optical excitation ABSTRACT: The present paper Is M expanded version.of an earlier.article on a two-photon. optically excited GaAs laser (Zhurnal eksperimen'tal'noy i teoreticheskoy fizikil pis'ma v redaktsiyu, v. 1' no.: 4, 1965, P.'29;,,(see ATD PRESS, v. 4, no. 15, 1965, p. 9)). It is pointed out that.iu,~calculating the coefficients of two-photon absorp- tion in CAC, R. Braunstein and N. Ockman (Physl6al'Review, v. 134, no.- 2A,-1964, p. 499) neglected the interband states-in the valence band and the interference turn in-the matrix elementai and thus arrived*.&tAncorrect results. Since a formula derived by 1;. V. Keldy'sh (Zhurnal ekiperimental'noy i teoreticheskoy fiziki, v. 47, 1964, p. 1945) for the probability of multipboton absorption gives a lower value than the experimentally obtained data for two-p4oton absorption,- formulas are derived for the probability and thu'coefficient~of.~two-photon 'abnnption in 'GaAA' uiiJ1g__0e4ertuiba~ Card 1/2 -L -22769-66 ACC NR, AP6010975 tion theory and taking. into account the band structure parameters of GaAs. In additicn expressiors are also obtained,for the dependence of the excitation,intensity on the penetration depth of the exciting radiation into the semiconductor and theexternal coherent.quantum yield and its dependence on the internal losses in the laser and on the length of the cavity.; The calculatedAata are found to be in good agr~aement with. the* experimental results.. .orig. art, has: 18 formulas and 7 figures*-'. (CS) SUB:CODE.- 20/ SUBH DATE: o6oct65/ ORIG REP: 007/ OTH REP: 064/ ATD PRESS:i,71.27 01 L 2_1432-66 EBD 1.,T(i)/FEc(k)--2LTLP-wp(k)/i~IIA(h) - 1JP(c) !XG I ACC NRs AP6009485 SOURCE CODE: UR10020166116TIO0110OT31OVi AUTHOR: (CorrespmdIng member); Letokhov, V. S. Basov.'N. G. ORG: Msics Institute-imi. P. W. Lebed a- Acadermr of hsk ev WMI&S _SSM (Fizic e iy ! Inst4tut Akademii nauk.SBSR) f TITLE: Change"in the shape of alight pulse during nonlinear amplification, SOURCE: AN SSSR. Doklady, v. 167,. no. 11 1966, T3-761 GS: laser, stimulated emission-, nonlinear optics j ABSTRACT: A theoretical Investigation Is made of the change in the shape ofa L? pulseffom a laser during nonlinear amplification. The assumption is madethat pulse duration is considerably longer than the transverse relaxation time of the medium. An expression is'derived'for the pulse velocity-in such a medium as a functioh: of the shape oftbe initial pulse. In the case of the exponential leading- edge, this expression,.4hich appiies-to"the 'general case when the velocity pulse varies with the the leading edge, reduces to. the -displacement ofthe pulse along one derived.by Basov et al. (AN SSSR, Daklady" v..165, no. 1, 1965, p. 58). It is'shown that it is possible to predict uniquely the, change in the shape:of the pulse of light during nonlinear amplification or even the shape -of the ultrasonic pulse in a two-level phonon maser ampli-fier.".if the shape of the initial pulse is known. Orig. art. has*. 8 formulas and 3 figures. [CS) SUB CODE: 20/ SUBM DATE. 26ivov65/ oRiG REP: oog/ On nEF; oo6j ATD MESSWIVI~ C.rd L 35886-66 FBD/EdT(1 )/EEC(k)-2/TA*,V0(k) IJP(0 WG ACC NRI AP6024516 Soma CODE: uiVo386/66/oo4/oo2/oo6i/oo62 AUTHOR: Basay,, N. G.; OMLW-smh A. *; and Shcbeglov, Ve A. ORG: Pbysica Institute ime Pe N* lAbedev, Acadeqr of Sciences SSSR (Fizicbeekly In- stitut Akademii--na-u-k IMR) TITLE: Beam laser for the infrared band SOURCE: Zb ekBper I teor fiz. Pialms, v ktoiyu. Prilozheniye, v. 4., no. 2p 1966, TOPIC TAGS: molecular generator,, ir quantum generator) oytic transition., laser pump ABSTRACT: The authors show that atomic- or molecular-beam masers, the development of which ban hitherto been confined to the radio band, are also feasible for the infrared band and discuss brief3y the possible molecular transitions that can be used to con- struct an ir laser with thermal pumping. Such a laser is based on a very simple idea: a highly heated beam of molecules in allowed to escape to a vacuum in which the equi- librium radiation is much smnller than (Ep - Em)/k (Fp and Em are two molecular levels Ep > Em, whose radiative decay times satisfy the relation -rp > TM). Spontaneaun emis- sion soon depletes the % level and a state with population inversion can be produced for the P- Q transition* The necessary condition for the occurrence of pupulation inversion between the levels 0 and a is Tp > (1 + TOCVTP)%. The most convenient Wye- length raMe for the proposed method in 3 - 20 ~t. The iuitalble transitions for the C02 molecule are illustrated. 84mila transitions can be obtained for N20 and BCN- It is COM 312 I 1~ I T., I klc i-Avu --I- T~ r 7 ir~k 10 ;1 1T --L-4.4793~6 ACC NRI AP6031433 SOURCE CODE: UR/0056/66/051/002/0406/0411 AUTHOR: Ambartsumyan. R. Basov, N. G.; Zuyev, V. S.; Kryuko , P. G.S* Letokhov. V. .; Shatberashvill, 0. B. ORG: Physics Institmte im. P. N. Lebedev, Academy of Sciences 0SSS~ kFizicheskiy institut Akademii nauk SSSR) TITLE: The structure of a giEnt pulse of a Q-switched laser SOURCE: Zh eksper i teor fiz, v. 51, no. 2, 1966, 406-411 TOPIC TAGS: solid state laser, ruby laser, giant pulse laser, Q switched laser, t lj~ser output ABSTRACT: The spatial and temporal development of a giant pulse of a Q-switched rub laser in a transverse direction and the effects of the cavity on it were investigated experimentally by means of the setup shown in Fig. 1. A ruby rod 9 mm in diameter and 120 mm long with dull lateral surfaces was placed in a reflector with a helical IFK-15000 flashlamp. For an 8-ki pump the gain per pass was approximately 12. A 1.5-j single laser pulse was generated with a duration of 10-15 nanosec. Q-switchlf~_ was done by means of a Kerr cell or a vanadium phthalocyanin solution. The exponen- tial results indicate that generation commences in the center of the crystal an spreads transversely over the entire crystal in 3-10 nanosec, i.e., in a time %-%11u_I parable to the duration of the integral pulse. The spatial development of generation L 1.,7575-6-b EEC( k) -1-,-WPk kN 1'~WP 032 ---4767--- ACC NRs AP6 46: SOURCE CODE: UR/0056/667651/bbY/Of2 2 AUTHOR: AmbartsurMran, R. V.; Basov, N. G.; Kryukov, P. G.; Letokhov, V. So --MMMMM~ -51 ORG: Physics lnrtj4tute im. P. N. Lebedev,.AcadeoV of Sciences,SSSR (Fizicheskiy institut Akademil.nauk 35SR) TITLE: Laser witb a nonresonant feedback SOURCE. Zhu4l eksperimentallnoy i tegreVicheahoY Mikis V, 51, no- 3s 41966, 724-729 TOPIC TAGS: solid state laser, ruby laser, nonresonant feedback.,EEESL- laser r and ABSTRACT: A description is given of a pulsed laser with a nonresonant feedback achieved by back scattering of radiation (See also FSB, v. 2, no. 5, 1966, 1-6). The arrangement used in the experiments is shown in Fig. 1. The active medium 4 6 .7 Fig. 1. Experimental arrangement -k 1P -ZM WH J%16%. mu Arvvc.70.7.7 sourtax Cole: MV0386/66/0C4/0D3j0D19/00M 1 9 AUTHM "bos R. s" i zvym, ve Go" zot, ito: Sol MIT! M. N i- F ows. Mica infftLute Lfieday, Acadftw--gtj~ienaea UAWLLr1Acheskiy in- stitut Akademii nauk WOR TITIZ Pr ation Of a: 0 In smll.Oying and absorbing'Ma'M ~d Nntimentallrxw i tooratichookor fixlkis Plelm6 v.rsd&Msiyu. r 'Ile oo, ve, 4 no. P ilor P Ij.; 3,966, 19-22 TOPIC TAGS: coherent lightp light pulse., laser bowl, laser r and d., pulse shape, rubj optic material ABSTRACT: This is a continuation of earlier work by the authors: (ZhETF, vi 5D.,~ 230 19%)., where propagation of coherent, light in~ a medium, with nonliiear gaili was investi. gated and the possible shortening of light pix1ses in such a medium predicted* - The present- letter reports on successful experiments in this direction., showing that to obtain compression of a propagating light pulse it is necessax7 to eliminate'tbe trans. verse structure that, is produced in the light pulse when tbe~ latter is produced.. for example., by a Q-gwitch4 laser, In the test setup (*1g. 1) the. amplifying component consisted of tbree-xubgucrystals and the absorbing component was two cuvettes filled.' with a solution of,vanadium LnWt1n toluene. In the initial experiments the M9.ftwe! t "a compression coffff-RoTbo reall ed le4uze~ of the tranaverve structure resul ing Card V9 ACC NR, AP6023635 .19 Fig.. 1. Diagram of experi-,, ment. I - IAner 2 - Kerr, sbutter.# 3' - euvattep 4 ruby crystal .1 from the fact that the develppmt of pulse'generation _in the peripheral parts of the'~ of the Y ftration. J;UCCess was crystal is.delayed by time'of the. order attained julao when this structure was eliminated by means of-a Second Kerr shutter that cut off the' leading front of-the generator pulse., gie pulse'vidth was reduced-from about 32 nsec at 0.5 J energy) past the'Kerr'8butter and,the first absorbing euvette to 5.7 10 J):'past the second am ying crystal., wd 2 nsqc (15'J) past the thlrd. A ligbt-- plif output of 7 - 8 GW (3 GW16e) was attaine&: Ttle pulse rower is much higher.than the tals at JO-SL See ~ duration 1 GWlm?)* Alt4vu& power vausirg damge in ruby cryff dawge to the crystal, is hWered bv tba dbort duration of tbe pulse,#. it dow not pre ligft L Vases that vent generation of powerful shortertban 10-9 see. It Isconcluded extremely short light Vases are'dbtaineble h tVo_co*one#, media In vbicb tbedb- Wit sorbing cooTonent has a saturation energy much low and a homogeneous lins. vidth much he anplifying =&UM~.: Orig. art. figures*:. Xj&rger than + [021 MUM J*j%~:'003/ 001f ATD P?= vIr. W2 Al-16 -NKi WbU154413 -BOURCE CODE: - -UR/0161/bb/000/005/1341/134? AUTHOR".: Basov,. N. 0. Bogdankevich, 0. V.; Yellseyev, P. G.; Lavrushin, B. M..:* ORO: Physics Institute im~ Ps N,. Lebedev~ -AN SSSRj Moscow'- (FizicbiikW),~--1J Y, institut AN SSSR)- TITLE: A solid solution GSPXAB j_k_Laservexeited by a beam of fast electrons, SOURCE: Fizika, tverdogo-tel4, Y. 8,-.no~ 5, 1966, 1341-1342 TOPIC TAGS: laser, semiconductor laser, coherent radiation, gallium ph. gallium jkracuift 7 V1 ABSMRACT:! Laser action at~nitrogen temperature.is reported in n-type GaP excited by a beam of 50-kev electrons., The GaP concentration was about 2u% and that.,- of uncontrolled donor impurities$ _.j017 Cm-3. The GaP.Aa .I_x samples were obtained, by epitaxial growth through gastransport reactions. The dimensions of the sample vere-0.48 x 0.75 x 2.5 mm. The Fabry-Perot cavity (cavity length 0.48 MM) was prepared by polishing the sides of the'sample. The experimental arrangement was.: similar to that used-in electron beam excitation of GaAs (Fizika tyerdogD tol "V-89 no,. it 1966, p. 21) except thata. monochromator with a resolving power of 31 was. us;a instead of the spectrometer.. The pulse duration and the repetition rate were- 2 usee and 60 pps, respectively.. At current densities (J) less than 0.3 amp /CM2 'Spontaneous emission peaked at -a wi-velength of 8300 (half-width of about 1000 ;rr 6~rd X. L '%7393-~6 ACC NR,-- AP6015448 Above j 0 .3 amp/Cm a second peak appeared at approximately gOOO The lntensitt:~,~ of the peak at 7000 A incressed.much faster than that-at 8306 A,, so.that at I amp/cm 2Othe intensity of the former peak was 10 times'-greaterthan that olf the"" peak at 8300 A. Fig. l..shows tfie:emission aRectrum-at diff .erent values of J. The.. smallest value of half-vIdth obt4ned.vas 12 A. The divergence in the plane e*xposed,'--- to the-electron beam was 1h-'150.. Depending o~k the qual#y of the resonator the Fig. 1. The emission spectrum of,-- 08P ASOq to CL2 0.4 43 j, amp/cM2: 04%,.2'- 06;75;+. 2i%4 -ii t i it I v I I SM aw Wo ?QW 70- 270U.-M, oscillation.threshold varied between 6 2. e 15-2-5 am/cm Th - -.duration of the laser:' puls&vae not greater than-100 nsect-,. Orig..art4 ban 6 3 figures i, SUB OODE: 20/ SUBM DVE: 26ju165/ OPJG REF3, 002/ OM MW: 002/ ATD PiMCBS -- 17.51 Card 2/2 -~Jo L 34 3 8-0-66 _F B_D/_ E-'-h--r -1) EWT (m /E EC ( _k)___ -2/T-/EW P (t ) [E T I /E-W P ( k3 P ( C AP6023202 WG/JD7JG SOURCE CODE: UR/0020/66/168/oo6/1283/1286 'di .; GOncharOV9 AUTHOR: Basov, N. G. (Corr" _n ng member AN SSSR);,Bogdanke'Vich, 0. V I-V. A. Livrushin, B~~' M.; Sudzilovskiy. V. Yu., institut Akademii nWu-k 90-RI V TITLE: A GaAs laser with a plane resonator 0 SOURCE: AN SSSR. Doklady, v. 168, no. 6, 1966, 1283-1286 TOPIC TAGS: semiconductor laser, gallium arsenide laser, plane resonator, electron beam pumping ABSTRACT: Generation in a system with a plane resonator in vhich the mirror area S is much greater than L2 (L is the distance between mirrors) is described. Experi- ments were carried out on an n-type GaAs sample with an impurity concentration of 2.1016 ce3and a mobility of 5200 =2/v.sec at 300K. The sample was prepared in the form of a polished plane-parallel plate 100 p thick and several mm in diameter, and was pumped by rul5O-kev electron pulses with a-duration of 150,10-9 see and a repeti- tion frequency of 10 cps. 'When L was equal to 100 p, generation occurred at a curreit density of 5 amp/cm2. The values of minimum gain necessary to achieve generation ex- ceeded the experimentally measured value of the absorption coefficient at the gener- ation wavelength by one order of magnitude. The magnitude of the discrepancy rules ORG: Physics Institute im. P. W. Lebedev, Academy of Sciences SSSR (Fizicheskiy -L--34380-66----- ACC NR: AP6023202 out experimental error and can be attributed to narrowing of the forbidden gap of the excited crystal. The narrowing (by B-10-3 ev) can be due to the screening effect of the crystalline field..*by free carriers and their interactions. Expressions are given for the dependence of the width of the forbidden gap on the free carrier - concentrations. Orig. art. has: 3 figures and 8 formulas. [YK) -SIM CODE, 20/ SUBM DATE.,. O5Feb66/ ORIG REP: 005/ OTH REP: 005/ ATD PFMS; CWd 2/2 L 29555-66 EBC(k)-2/EWP(k)/FWT(l)/FBDJT IJP(c) WG ACC Nka AP6018052 SOURCE CODE: UR/0020/66/168/003/0550/0553 AUTHOR: Basov N. G. (Corresponding member AN SSSR); Morozov, V. N.: Oravevskiy, A.N ORG: Physics Ingtitute Im. F, N. Lebedev. Academy of Sciences SSLRJ1TikcheskiY institut Akademii nauk SSSR) TITLE: Contribution to the theory of undamped pulsations of*~Iaser intensity SOURCE: AN SSSR. Doklady, v. 168, no. 3, 1966, 550-553 TOPIC TAGS: laser emission, solid state laser, laser pulsation, phase diagram, light pulse ABSTRACT: The differential equation for the intensity of laser emission, which In the case of solid-state lasers reduces to an equation whose stable limiting cycle cor- responds to undamped oscillations of t 'lie laser emission intensity, is solved analyti- cally. It is shown that the solutions obtained approximate quite closely the phase trajectories of the system in a case of large depth of modulation. The solution con- sists of two parts. 7he first corresponds to a slow motion when the active particles accumulate and the amplitude Increases relatively slowly. The second represents an increase in amplitude followed by a release of the stored energy by radiation during a short pulse. The analytic relations obtained are used to calculate the parameters of a scheme proposed by the authors (Paper at Scientific Congress in Leipzig, March 1965) to obtain short light pulses (Fig. 1). The periodic solution of the equations Card -1/2 imni 621.378.325 L 29555-66 ACC NRs AP6018052 Fig. 1. Diagram of equipment for generation of short light flashes L Laser; A - amplifier. Is obtained ahd a numeiical example is presented. It is shown that radiation pulses of 5.6 x 10-11 at half-power points with depth of modulation almost 100% are feasible in.auch a scheme. Orig. art. has: 1 figure and 19,formulas. (021 SUB COM '20/ SUBM DATE: 23Feb66/, ORIG RED 003/ ATD PRESS Card 2/2 C' - (-) L 397S -66- m)fEFQk-)-,2TFBA/-Y)E1dP (k) /&A (h) 1WP (t) an 1)TW( Tip ACC NRt AP6015476 SOURCE CODE: us/olft/66/008/065/15WI538 JD/GD-2 AUTHOR: Basov, N. .; Bogdankevich, 0. V.; Devyatkov, A. G. ORG: Physics Institute im. P. N. Lebedev, Academy of Sciences SSSR, Moscow (Fizicheskiy institut AN SSSR) TITLE: Certain characteristics of emission generated in CdS by electron excitation SOURCE: Fizika tverdogo tela, v. 8, no. 5, 1966, 1536-1538 TOPIC TAGS: laser, semiconductor laser, cadmium sulfide, coherent emission ABS"1!RACT: The present paper is an extension of an earlier work (N. G. Basov, et al. Zhurnal ekspyrimental'noy i teoreticheskoy; fiziki, v. 47, no. 4(10), 1964, 1588) in which laseA~%ction was_ reported ii~ QdS excited by a. beam of.electrons. The 0.5 x 0.85 x 1.5 mm sample was prepared by polishing. The Fabry-Perot cavity was formed by the 0.85 x 1.5 mm faces. The beam of 50-kev electrons was incident bntheO.5 x 151M face of the crystal cooled to the liquid nitrogen temperature. The pulse duration and the repetition frequency were 1-2 usee and 50 cps, respectively. Fig. 1 shows the emission spectrum of CdS at different current densities (J). Al j = 100 mamp/cm2 recombinatiun radiation with a half-width ~10 1 peaked at 4960 A. Although line na,3~rowing was observed at j = 1.5 amp/cm2' the oscillation threshold was at .5 amp/cm-2a The divergence at the threshold was 13* in the plane of the beam and,9* in the plane ACC NR3 Fig. 1. The emission spectrum ot US at- different current densities 43 i in amp/CM2* 1 0.18; 2 0.52; 3 8.56- (T 80K). k~W 5M 5M - V 4IX perpendiculir'to it. Me quantum efficiency, defined as the ratio of the radiated power to the power of the electron beam, exceeded 1%. Orig. art. has: 4 fi'gureso Jes SUB CODE: Card 212 SUBM DPLLT- Il5Nov65/ ORIG REFI 001/ ATD PM3;~ -WO/JD -r.- 28449-66 IJP(c) r _:_-ACC: NRvAP60l8703,---- --SOURCE- CODE:--- uiVOT&1661003101VO4l1043, AUTHOR: No Gop Zakharw, YU 'P.'* NlIdtinas To .7o; Popov# 7U* Mo_�~ Go Mat. Tat No; MivoshcbLp A! N, ACOAM of Balances SSSR (FIZICbeekly OFG: ftnics"Inatitute Im* Pa No waaff, ad 3 ME SOMO IrAtItut Ak". im at. room teolpersture OS 11-a arsenide UserAperat IMW I'teoreticheabW Miki, Pism v radakbBiVo 3" noo:' Up 2$" .um arsenide,. semiconductor laserp junction, junction diodep A;i spectrum .A PIZ', AMMUT: Mle authwe imatigsta the performance a semiconductor lasers bued on diffusion p-n junctiomB operating at 300Ko The diodes vere excited eithir_~vith pulse generator (current up to, 4000 amp, pulze duration 2D nsec) or with a generator. ,vltb discharge capacitor and mechanical discharge with current up to 15W ej* an& nsee. 'e-The diode emissi had atilow crtrents a:brOO& spectrum T PABS duration 30 mri-oved'dinwgradual3y fX*3.W t~6 Mal vith increasing currento At.'4L tbrishm. (ad Current density that Varied from diode to -diode (105. - 5 x 205 a', single generation line vas produced at 1 -9000, A, vbidh~ is of longer wavelength than the max- Pbe spontaneous emission spectruis. -With increase in currentp ada' -ional t1 lima appear in the spectrump corresponding to different resonator modes and the 2/2. -V r ;1P(t)jE!! - WG/JD ACC NRs AP6030959 SOURCE CODE: UR/0181/66/008/009/2610/2615 AUTHOR: -Basov, N. G Yeliseyev, P. G.: Ismailov. I.; Yakobson, S. V.; Nashel'skiy, A. Ya.; Finsker, 1. Z__ ORG: Physics Institute im. P. N. Lebedev, AN SSSR, Moscow (Fizicheskiy institut AN SSSR) TITLE: Certain properties of lnP lasers SOURCE: Fizika tverdogo tela, v. 8, no. 9, 1966, 2610-2615 70PIC TAGS: solid state laser, semiconductor laser, indium phosphide laser, infrared laser , lAtO.-0M COMPOUA.J0 ABSTRACT: Stimulated emission of InP diodes in the 9060-9080 i region was compared with that of their GaAs counterparts (see Table 1). InP bars were prepared by the directed crystallization method in the form of large-size polycrystals grained in the direction of the bar axis. The bars were tellurium-doped with electron concentrations of 5-1017 Cm-1. The diffusion of zinc from the gas phase into polished plates each containing 2-3 seeds took placd at 750C over a 30-min period. The depth of the p-n junction was 35 V. The electrical contacts were made of gold which was sputtered on plates at 400C. The bar ends were polished and the sides were roughly worked. The GaAs diodes were prepared in a similar manner with the following exceptions: diffusion- of zinc into GaAs lasted 4 hr at 850C under excess As pressure, and the resonator Card 4 44600-66 ACC NRt AP6030959 Table. l.' Basic characteristics of InP and GaAs lasers InP I GaAs ~ctron concentration in the n-region, cm-3 5.1017 5..1017 ctron mobility in the n-region, cm2/v-sec 2000 3200 centration of zinc in the gaseous phase during diffusion, cm73 3-1018 7-1018 fusion temperature, OC 750 850 fusion time, hours 0.5 4 gth of Fabry-Perot resonator, mm, 0.8 0.9 elength of stinulated emission A 9070 8480 ~eshold current density, amp/cmI 72D0 940 -eshold current density after one surface is silvered, amp/CM2 4700 630 a factor a, cm-1 8 8 .n divided by current.density, 0, cm-aml) h.7-10 .2.5-10-2 surfaces and diffusion plane were produced by cleavage along the contact plane. The diffusion depth in both cases was almost identical. As regards the width of directi- vity,. InP lasers (5-7*) were shown to be superior to GaAs lasers (14-19') by a factor of 3 or 4. InP laser diodes were characterized by a low loss factor (q,7 cm-1) Card 2/3 -L-44600-66- - ACC NRt AP6030959 and a gain relativelT lower than that of GaAs, expressed in a linear approximation k - 3.4 x 10-3 j cm7 , where j (amp/CDC2) is the current density. The latter can be due to a lower (than GaAs) quantum yield and to a thick active layer (8-10 P). 7be differential efficiencies of the InP laser made it possible to deliver pulsed power of 7 watts at 75 amp at the liquid N temperature. Orig. art. has: 2 tables, 2 figures, and 3 formulas. JYKJ SUB CODE: 20/ SUBM DATE: 17jan66/ OTH REF: 012/ ATD.PRESS: 5078 3/3 421 L ul-L66 __EWT(l_)/EWT_(m_)/EEC(k)-2/' (t)JE I I.7P vJr4]D4JG _ACC7MC_AP603096O SOURCE CODE: UR/0181/66/008/009/261612622 AUTHOR: Basov,_&__Qli Yeliseyey, P. G.; Zakharov, S. D.; Zakharovq Yu. P.; Orayevskiy, I. N.; Pinsker, I. Z.; itrakhov, V. P. ORG, Ph 8i s Institute im. P. N. Lebedev AN SSSR* Moscow (Fizicheakiy institut AN SSS TITLE: Certain properties of GaAellaser diodes S07JRCE: Fimika tverdogo telal v. 8g noA 1966, 2616-2622 TOPIC TAGS: solid state laser,-semiconductor laser, gallium arsenide$laserg -SPMJ'e*A)004!rV1C 01613E ABSTRACT: Phenomenological methods were used in an experimental study of certain properties of GaAs laser diodes (loss factor, quantum yield, differential efficiency, gain). The specimens were prepared by the diffusion of zinc into n-type GaAs crystals with electron concentrations of 2 x 1018 cm-3. The cavities consisted of silver mirrors sputtered on polished crystalline surfaces pre-coated with a thin layer of SiO, and the electrical contacts consisted of sputtered metal (Au, Ni, In, SO films and fuse4-in electrodes. T~e measurements were carried out at 77K and the pulsed output was recorded by a calibrated silicon photodiode. The lowest threshold currents occurred in diodes,which were cleaved on all four sides. A threshold current of 25 mamp was attained at the liquid He temperature and at a density of 75 amp/CM2, C-w operation was observed from diodes with I thr " 0.5 amp at 4.2K. The results L 44603-66 EWT LEEM) Z-I-,'P Ct)/ET (1)/EWT(m) - J~A nv-TA I lip A C NR, APO'369Fff- SOURCE CODE: UR/0116~-lt66/ 8/009/2B16/2818 AUTHOR; 'Baqg-y.- III,- ii-Drozhbin, Yu. A.: Zakharov. Yu. P.: Nikitin, V. V.P- Semenov, A. S.; Stepanov, B. M.; Tolmachev, A. M.; Yakovlev, V. A. ORG: Physics Institute im. P.-N. Lebedev, AN SSSR, Moscow (Fizicheakiy institut AN SSSR) TITLE: The effect of injection current on the temporal characteristics of a GaAs laser SOURCEz Fizika tverdogo tela, v. 8, no. 9, 1966, 2816-2818 TOPIC TAGS; solid state laser, semiconductor laser, gallium arsenidellaser, injection laser> P4 Fe'r-el'c 0- ue4e F 4-.#,r, wrF- C ciie oe IAOr 2~ ABSTRACT: In an investigation of the temporal characteristics of a GaAs laser the radiative delay tim:P(T,) was determined as a function of the injection current. Ordinary diodes, pr ar d by means of the diffusion process, were placed in a dewar at the liquid N temperature. The laser was excited by a current oscillator with pulse amplitudes from 4 to 40 amp and a duration of 40 nanosec. Several diodes were investi gated at threshold currents from 1.8 to 4 amp. The dependence of T on injection current indicates that the value Of T9 approaches 1.8 x 10-9 see. this corresponds approximately to the spontaneous radiative lifetimes for electrons and holes calculatec theoretically elsewhere (W. P. Dumke, Phys. Rev., 132, 1998, 1963). With a 16-fold Card L 44603-66 -A-P 6-0 3 -0 9-8 3- C NR: I increase of Ithr, Tg increases to 0.9 nanosec; this is explained by the time increase necessary to achieve population inversion. To eliminate delay due to spontaneous emission and to achieve stimulated emission, the diode was pulsed by currents from an auxilliary oscillator with amplitudes of 1.5 Ithr and durations of approximately 200 nanosec. Some 50 nanosec after the onset of the auxilliary pulse, the diode was pulsed by a positive current from the master oscillator. The delay time between the onset of the injection current from the master oscillator and the radiation inducedby it was measured, and at 17 Ithr was reduced to 6 x 10-11 sec. A further decrease in T calls for considerably increased injection currents. The experimental data indicate tRat GaAs lasers can be used as radiation modulators in the centimeter band and as high-speed (10-10-1011 see) optical switches. Orig. art. has: 1 figure. '[YKI SUB CODE: 20/ SUBM DATE: 13Apr66/ ORIG REF: 001/ OTH REF: 002/ ATD PRESS: 5078 L 32209-66 FBD/EWT(1)/ZECW-Z/T/EWP(k) IJP(c,) WG ,/O.WO40/0471- ACC NR: Ap6o20791 SOURCE CODE: MVO391661N~ AUTHOR: Basovi N. rayevskin A. N..; Stiakhovskiy, 0. M.; Uspenskiyo A, V. Lebedev, AcadgZ of Sciences SSSR (Flzlcheakly im. ORG: Plwsica Institute P. N, instit Akademii nauk SSP) TITLE: Two-cavity laseAss Idgh-resolution spectroscope SOURCE: Zhurnal eksperimentalllioy I teoreticheskoy fiziki. Pialma 81yu. Prilozheniye) v. 3p no. l2p iW,, 468-471 TOPIC TAGS: laser application.. laser radiation spectrum,, molecular spectroscopyi, receiver resolution, bWperfine structure ABSTRACT: The authors show that in a laser it is possible to resolve spectral i; components within the limits of a homogeneously broadened line, so that a spectro-! scope based on the use of such a laser can have a resolution limit determined.by-.-I, the width*connected with the monochromaticity and stability of the radiation. source* The spectroscope consists of a previously-described laser with two cavi- ties in tandem (Pis'ma ZhM v. 2p 77, 196.5). Modulation of the distance between the two cavities normaaly modulates the signal In the second cavity, but if the signal frequency coincides exact3,v with the peak of the spectral line, then the Card V2 L 32209-66 AGG NR: AP6020791 0 distance modulation does not cause phase modulation. Since the position of the line peak changes with the magnitude of the signal in the first cavity, it is possible, by measuring the generation frequency at which the phase of the second cavity does not depend on the modulation of the distance between cavities, to ob- tain at different signal values as many independent equations as there are hyper- fine structure components in the line. Simultaneous solution of these equations determines the positions of the hyperfine components. A sample calculation is given for a line with two components, and it is shown that for cavities 10 cm long spaced 10 cm apart$ a mean beam velocity 6 x 10 cm/sec, a modulation frequen-I cy 10 cps,* and a detection time of 1 see it is possible to resolve spectral com- ponents separated by several cps. Orig. art. has: 2 formulas. SUB CODE: 20/ SUM DAM 09AI)r&/ ORIG REF: 002/ OTH REF: 001 Card 2/2 ACC NR: AP701-1022 SOURCE CODEj UR/0053/66/089/003/Cj520/0525 AUTHORS Barchukov, A. I.; Basov, N. G.; Bunkin, F. V.; Veselago, V. C.; Irlsova, N. A.; Xarlov, N. 7.77,11anenkov, A. A. ORG: none TITLE: Alaksindr M)dialovich rrokhorov SOURCE: Uspol:hi fizichaskikh naukp v. 89, no. 3, 1966, 520-525 =11C TAGS: physics personnel, radio wave propagation, maser, quantwri generator, academic personnel ABSTRACT: Aleksandr Mikhaylovich Prokhorov is one of the leading Soviet physicists, a corresponding member of the Academy of Sciences USSR, and a winner of the Lenin and Nobel prizes. He is associated with the development of quantum radiophysics and belongs to the widely known school of academicians L. 1. Mandell shtarn and N. D. Papaleksi. Prokhorov has successfully combined physical investigations with the development of working devices I employing new physical principles and phenomena. Prokhorov was born on 11 July 1916 in Atherton, Australia. His fiather was a polftical refugee who had- migrated to Australia in 1911. Thefamily returned to Russia in 1923. In 1939 Prokhorov graduated with honors frorn the Physics Department of Leningrad University and entered the 0scilla"ions Laboratory of the Physics Institute imeni P. N. Lebedev for posigraduate work. Prokhorov was in the army from 1941 until 1944. when after being -Card 1/6 UDC: 92:53 '-ACC NR: AP7011-022 wounded for the second time he was rildeased. Prokhorov I s scientific activity began in 1939 under the guidance of M. A. Leontovich and V. V. Migulin with the study of radiowave propagation along the earth' s surface. From this study Prokhorov and Migulin developed an original way to observe the ionosphere by means of the radio interference method. In 1944 Prokhorov investigated the frequency stabilization of tube oscillators in the Oscillattions Laboratory.of the Lebedev Physics Institute. His first dissertation work was accomplished under the guidance of S. M1 Rytov and was devoted to the theory of nonlinear oscillations. Prokhorov, Rytov, and M. Ye. Zhabotin- skiy received the Mandell shtam Prize for the development of the theory of frequency stabilization. After defending his dissertation, Prokhorov proceeded with his work in radiophysics. In 1948 he began a study of coherent radiation in a synchrotron. From this investigation Prokhorov developed a method for determining the size of electron bunches and showed experimentally that a synchrotron generates coherertt radiation in the centimeter range. He presented his 'results in the form of a doctoral thesis, which he defended successfully in 1951. bard ~2/6 ACC NR. A117011022 Simultanerusly with his work in accelerator physics, Prokhorov, at -the invitation of ac a~demician D. V. Skobel I tsyn, began working in the field of radio spe ctr os copy. Prokhorovl s interest in radiospectroscopy was t, encouraged by the fact that well developed methods of radiolocation and radioengineering were being employed at that time.' These methods were soon to find application in the now field of radiophysics, principally in the spectroscopy of the rotational and vibrational spectra of molecules. Besides investigating purely spectro~coplc problems, Prokho~ov also studied the employment oil t1-e absorption spectra in the uhf range for the construction of frequency and time standards. As a result of theoretical examinations of ways to raise the stability of molecular frequency and time standards$ Prokhorov together with N. G. Basov wrote a series of classical works on the development of masers, It was at this point that Prokhorov became one of the founders of quantum electronics. Prok:horov and Basov soon offered a new method for obtaining a system with negative temperature, the so-called "three levels method, " which later became the basic method for developing paramagnetic as well as optical quantum generators and amplifiers. During the period from 1955 to 1960, Prokhorov concentrated on the development of quantum paramagnetic amplifiers in the uhf range, giving special attention to new crystals' for Card 3/6 ACC NR: AP7011022 paramagnetic amplifiers and to the investigation of their spectra and relaxa- tion characteristics. The ruby was investigated in Prokhorov' s laboratory and was proposed for use in quantum paramagnetic amplifiers. Prokhorovt s works in quantum radiophysics were highly regarded. In 1959 Prolshorov and Basov were co-recipients of the Lenin Prim for developing a new method for the amplification and generation of electromagnetic waves. Prokhorov in 1954 became supervisor of the Oscillations Laboratory, which under his supervision developed into two new laboratories of the Lebedev Physics Institute: the Radioastronomy Laboratory and the Quantum Radiophysics Laboratory. A professor at Moscow State University since 1957, Prokhorov there organized the Laboratory of Radiospe ctr os copy at the Scientific Research Institute of Nuclear Physics. One of the paramagnetic amDlifiers for 21-cm waves constructed under Prokhorovl s guidance was insialled on the 22-m parabolic mirror antenna operating at the Lebedev Institute' s Radioastronoxny~ Station at Pushchino (near Serpukhov) for use in observing hydrogen emissions from space. During this period Prokhor ov directed a great deal of attention to the search for new crystals for amplifiers and generators in the range of millimeter and submillimeter wavelengths.. His greatest attention was given to ,,C.ard 4/6 ACC NR. A7703-1022 Insers. In 1958, Prokhorov proposed a new type of resonator for submilli- meter waves, the so-called open resonator in the form of two parallel mirror surfaces. in 1960 Prokhorov was elected a corresponding member of the Ac_Wemy of Sciences USSR in the Department of General and A plied Physics. Since P then he has concentrated primarily on the study of processes in cryi~tal lasers. Prok-horov has investigated and prepared cryi;tals from fluorite with . dysprosiurn and other impurities and has succeeded in using solar radiation punip fluorite crystals. A new principle for the operation of quantum irererators b utilizing y the two-quantum transitions was developed in 1963 under Prokhorov' s super- vision. The construction of multi-photon (in particular two-photon) transi- tion lasers is the future of quantum electronics. In 1964 Prokhorov along with. Basov and Charles Townes was awarded the Nobel Prize in physics. Prokhorov has since achieved significant results in developing continuously operatine lasers for use in radiocommunications and technological operations. 16Card 5/6 '-ACC NR. A71011022 Under ProkhorovI s guiaance investigations have been proceeding in solid-state physics, particularly in the area of the behavior of superhigh I frequency solid-state plasma. This trend should open up possibilities for the construction of new physical devices and a new type of solid-state amplifier. Through the initiative and under the scientific guidance of Prokhorov, a special system for obtaining continuous superstrong magnetic fields with intensities of the order of hundreds of kilooersteds has been developed. This will be the first such installation in the USSR. A. M. Prokhorov has conducted investigations ranging over various fields of physics. Them results of his investigations ha-.re been published in more than 160 scientific reports. A member of the Department of General and Applied Physics, Prokhorov is also Vice-Presiderit of the International Radio Association (URSI) and is Chairman of its Soviet committee. Prokhorovt s wor"- have influenced considerably the development. of modern physics. His scientific and organizational activities have greatly affected the whole comolex of works in quantum radiophysics carried o jit in USSR. OrIj. art. has; I f Igure* EFSB: v. 2 no# ,I SUB CODFr 20 SMI DATE: none A Card 6/6._ 35386 Isspollzovanie Zinml:h PaSt[~4-hch Diya Dalt ney--heFo Pod'-a7,a Crvtscvodst,,ra. Sov. Zootekhniya, 1949,, I-loo 7s S. 81-88-Bibliogn. 5 HU7. SO: Letopis' Zhurnallr,:.,kh Statey Vol. 34, 'I'losIlwa, 1949 BASOVI N. I. "The Utilization of Chernotem Pasture Lands by Fine-Wool Sheep." CaM Agr Sei, All-Urxion Sci Res Inst of Shaep and Goat Raising, Stavropol', 1953. (RZhBiol.,.No 2, Sep 5h) . Survey of Scientific and Technical Dissertations Defended at USSR Higher Educational Institutions (10) Sos Sum. No. h81, 5 May 55 BASOV, N. 1. Chernye Zemli - Soils Plowing methods for sandy and sandy loam soils of Chernye Ze.-,di. Kom. baza 4, No. 2, 1953. 9. Monthly List of Russian Accessions, Library of Congress, june -1953. Unclassified. BASOVI N. 1. BASOV, N. I. - "Investigation of the forces in a caating cold in casting polystryene under pressure". Moscow, 1953. Min Higher Education USSR. Moscow InEt of Chemical Machine building. (Dissertation for the Degree of Candidate Technical Sciences), SO; Knishnavii Letcols' No. 46, 12 November 1955- Moscow 67094 /,57 P,3 0 0 SOV/123-59-13-54211 Translation from: Referativnyy zhurnal. Mashinostroyeniye, 1959, Nr 13, p 520 (USSR) AUTHORS: Basov; N.I., Levin, A.N. TTMES. Investigation of--the Effects of Several Technological Factors on the Pressure in the Press-Mold of Casting Machines in the Pressure-Citstifig of Polystyrene~4 -lbaODICAL; Tr. Moak. in-ta. khim. mashinostr., 1957, Vol 13, pp 97 - 109 ABSTRACT: The distribution of pressiire.in the test press-mold in dependence on the temperature of material, specific casting pressure, and mold design was investigated. As a test specimen a plate 155 mm long, 20 mm wide and 2.4- 2.6 mm thick, was used. The pressure was measured in six plac es, located over the length of the specimen in a 25-mm distance. The pressure of the plastic on the walls of the mold was recorded on a film of a MPO-2 electromagnetic oscillograph through a 6-channel tensometer amplifier. The investigations were carried out on a mechanical casting machine of a capacity of 30 - 50 g per cycle, with a variation in pressure of from 400 to 1,300 kg/cm2, at a temperature of 170 - 2100C in intervals Oard 1/2 of 100C. The distance of the pressure measuring points from the inlet SOVPM59-13-54211 Investigation of-the Effects of Several Technological Factors on the Pressure in the Press-Mold of Casting Machines in the Pressure-Casting of Polystyrene amounted to 2, 27, 52, 77, 102, 127, 152 mm. Oranulated transparent polystyrene, ob- tained by the cut-sbeet methodo was used. The relation between the maximum pressure in the mold (P ), the specific pressure (P.) and the temperature of the heating cylinder obtained &m the curves-by the method of least squares, looks as foolows: P Pm a + 0.00626 to 0 where a is the coefficient dependent on the thicknega of the manufactured object. The quantity a depends on the perimeter of the plate, according to the equation: a - ~ -1.016 + 0.90056 rl , where n is the perimeter. The investigation of the character of pressure variation in the mold under different casting conditions showed that the relative pressure drop P/Pm over the length of the manufactured object is the higher, the lower the temperature of the material to be pressed and the thinner the specimen. The relations obtained are expressed in the form of the empirical formula: - P - 0.72 . e-0.134K + 0.28e -3,98K X 170 4 m where K X Is the variable length of the manufactured object. Card ~/2 M.L.P. AFARASINT, A.N., kaind.tekhn.nouk; RA&Z- N-1 -W kand.tekhn.nauk; BELO- VITSKIT, A.A., insh.; TXSBLOYSKIY. V.S., doktor tokhn.nauk. prof.; OORNLIX. B.L. kand.takhn.nauk; DOROWOKOV, I.M., inxh.; ZAK, D.L., iush.; ITORI11, T.1,9 Ingh, Edooeasedj; KLINOT, I,Ta.9 daktor tekhn. namk, prof.; LSTIN, A.N.. daktor tekhn.nau , prof.; LWIN, S.1.8' kand.takhn.nauk; ' OV, V.A., kana.takhn.nauk: LION11W, N.L., doktor takhn.nauk. prof.: LOXHINA. P.L. kand.tekbn.nouk; MffT=VA. L*T.. insh.; WIKHA , A.Z., doktor takhn.nauko prof.; NUIMIX, lhelee kand.takhn.nank; PN=, S.M., Inih,; SALAZICIN, K.A., kand.takhn.nauko, SILITUMVICH. S.I., kand.tekhn.nauk; SOKMMSUU. S.L. kand. tekhu.nauk; EMWIX, A.A,s inih.; IMMUNSKITO P.N.~ doktor takhn. nauk. prof.; SMn3MM. I.Tu., kand.tokhn.nauk; TASHUNSKATA. 7.L. kand.tekhn.nauk; POGODIX-ALWESEW, G.1,v doktor takhn.nauk, profee red.; ND OVA, V.I., insh., rod.isd-va; SOKOWTA, T.F.. takhn.red, Ezandbook on materials used in the samifacture of machinery) Spra- vochnik po mashinostroitellnym materialam; v chetyrekh tomakh. Pod red.G.I.Pogodins-Alskseeva. Moskva, Goo.nauchno-tokhn.isa-vo us- shinostroit.lit-ry. Vol.4. ENonmetallic materials] Nemetalli- chwakle materialy. Red.tome A.N.Levin. 1960. 723 p. (MIRA 13:7) (Machinery industry) (Nonmetallic materials) 46 ILI u, Handbook on Machine-Building Materials (Cont.) SOV/4419 Dielectric properties no Methods of determining the main physical, mechanical,and dielectric properties 110 Technical properties of compression-molding and casting materials U2 Campression-mol4ing and dasting materials based on high-molecular compounds prepared by polycondensation and, addition polymerization 3-14 Coppression-molding pwders based on phenol-aldehyde resins 3-15 General-purpose campression-molding powders 3.16 Compression-molding powders with high electric-insulating properties 3-19 Special-purpose compression-molding powders 121 Campression-molding materials with improved mechanical strength, heat-resistance~and friction properties 124 Ccmpression-molding powders based on phenol-aldehyde resins and -fibrous fillers ' 125 Water- and acid-resistant electric-insulating compression- molding materials: "renout" and I'dekorrozit" (phenol-formaldehyde resin with polyvinyl-chloride and hydrophobic organic and mineral fillers) 129 Materials of the fsolite type with high chemical resistancebased on phenol-formaldehyde resins and asbestos 132 _C&V64A5 Handbook on Machine-Building Materials (Coat.) SOV/4419 Laminated p:Uwties 133 Compressed molding materials based on urea- and malamine- formaldehyde resins and cellulose filler 156 Decorative laminated plastics 157 Casting materials based on polyamide resins 15.8 Heat-insulating plastics 161 Foam plastics 161 RMIporn [thermosetting urea-formaldehyde resins vith foaming agent~containing catalyst for hardening] 162 Porous materials aade from.-polyester resins and isocyanatee "Porolon" 163 Polyethylene materials 163, "Ftoro.plasts" (halogenated ethylene plastics] 165 Materials based on polyvinyl chloride 168 Polystyrene and polyacrylic materials and their copolymers 17~ Application of polystyrene M The effect of various factors on the properties of polystyrene 173 Polyacrylic -materials 177 The effect of various factors on the properties of methyl methacrylate cft"/~ 177 Handbook on Machine-Building Materials (Coat.) SOV/4419 Albuninous [polypeptidel materials and materials made from cellulose esters 182 Materials mad from ceUu3.ose esters 182 Polyisobutylene and its compositions 188 Applications and,methods of working polylsobutylenes 191 Polyurethanes 191 EpcoW resins 198 .Polypropylene 2D0 Film 200 Films obtained frm polymers and copolymers of viuyl chloride 200 kilms obtained frcm polyolefins 201 -Organosilicon compounds 206 High molecular organosilicon compounds 2DT Polyester resins 207, Asb3stos'vinyl 219 General infomation 219 Physical and m6cbmwical properties of asibestos vinyl 220 The production of asbestos vinyl 222 The tecbidqae of applying asbestos vinyl 222 Safety.precaixtions and fire-prevention measures 223 1 BASOY, Nikolay Ivanovich; KARDEYEV., Vitally Vadllyevich; losifovich; SKURATOV, Vladimir Kirillovich [Present-day status of the processing of thermoplastic materials; reviev of foreign equipment and techniques] Sovremennoe sosthianie pererabotki temoplastichnykh ma- terialov; obzor zarubezhnoi tekbniki. Moskva., TSentr. in-t tekhniko-okon. informatsii, 1961. 139 p. (MIRA 17:11) BACHURIN, Dmitriy GrIgorlyevich; 'YERDKHIN, A.F.., vedushchiy red.; -o~vv 1,.~redq LAWNINA, L.V., tekbn. red, (Study and uses of polymers in industry; a survey of foreign tecbniques]Issledovanie i primenenie polimerov v promyshlen sti. Moskva,, GOSINTI, 1962. 111 p. (Obzor sarabezhnoi tekhniki. To- ma 10) (NIPA 16; 1) (Polyners) BASOV N.I,- KAZANKOV, Yu.V.; FELIPCHUK, I.I. a Investigation of.tha.basic.technclogical parameters of.polystyrene injeotion-molding with preoompreesion of a molten material* Plast. massy no,11:23-29 163o (MIRA 16:12) N.I.- ULANKOVY Y,-,.V.; FELIKOK, 1.1. -StadyIng t-bA pressure distrib,.iti.on. in a mold for 1I-ijection molding of polyalyrene. In 6L hydraulic muchivie. Ti-LLdy M1KIN 27* 16t. SWdying the Oxesiser. in the moid. of an molding press. ibid.:305-115 tMRA 18t8 BASOV P.I., V11PROVA, L.K.; V.i(. Effect of the tvhrjological Wameters on the -iuality of hoJlow goods made from po3yathylene. Trudy MIKIN 27:138-151 161. MIRA 18:8) ~1 W'3 .1% R.A -", 0-0' 11014 Au4'~rneLla !~n!t fcr t.~e mnml'a-~tve or hollow p2ast-o products from p~;*~Yetle~tm:a wlth thu blovirg extrusion method, Trikdy 141KHN 27:152- -5. (MIRA 1838) I--BASOV, NoNe, kend,telchn.nank Determining of bout parts made of sheet metal and of working parts in banding diss.'Sbor. MOSMANZIR no.4.-150-182 '58- (Shoot-metal work) (MIRA 12:4) BASOVA N.N - CHERNIKOVA,, T,M.j SUCHKOVp Yu.G.,- RUDNEV, M.M. Q favor and ornithasix ih vild birds. Vop.virus. 6,no.5t586-591 8-0 160, (MIFA 14:7) Is Viruadlogichookly Qt4ol Hanchno-ioale0avatellekogo protivoehmmp instituta Tatkaza L Wmvkaslyaj SUM Jim (Q PM) (OHNITHOSIT LEVI, M.I.; BATUROVA,, R.S.; WOVA.,-.N.N.; GERASYUK, L.G. Reaction of erythrocyte disagg2utination. Acta viro2. 6:556-557 162, 1. Scientific Research Institute of. Plaoie Conj~ol and Municipal Sanitary Epidemiological Station, Rostov on Dc4L U.S.S.R. (M%GGLUTINATION INHIBITION TFZTS) (IKFLUENZA VIRUSES) KANCMKH, A.A.; ZAPIATINA, S.I.; BASOVA. N,N, Nucdeoproteins of a viralent strain of the plague microbe, Mr. biokbim. zhur. 34 no.2:176-186 162 (MMA 16211) 1. Rostovokiy-na-Donu nauabno-iosladovatellskiy protivo- chunnyy institut, ACCESUM NRt AP4021*72 9/0111VU/007/00twom AUMORs 1. M. Allawence fm da"a In the watberh sdainy iTrUZ. q of wAs by a MAW surface SOURCE: IVUZ. 9 v9 79 no. 19 1964, 101-112 TOPIC TAM: MMM surfaceg statisticolly uneven surface, scattedag by b*=K).- geneities,, shadow effect, scund wave reflectien reflectim coefficient, avw%p field intensity, average field potential. Z;IZZ density ABSTRAM 7he reMcticn of sound waves fram a statistically ro* surface is pralmed. by the projections on the oonsidemd with allowance for the shadows sur- face. Fcvwjlas are derived in the Kirchhoff aplx-- for the reflection and for-the average intensity Of the scattered field. 7he avmp determined under the assumpticn that the sur- potential of the softtered field is iface is descrIbed by a rerAm functian f br which the jadnt densitim of the functian and its fint.derbutive am known. bay cns-46wnsicnal btMo. Was an the surfam an awaiduado but-tia remats am be wtwAsd a1w tD 'M&MI *010sities. MW moats Mply aim to wavese i.cwd BkSS FG-.-- FUKS., I.M. -==a- . .9 ~ Making allowance for shading in the scattering of vaves on a statistically rough surface. Izv. vys. ucheb. zav.; radiofit. 7 rio.1:101-112- 164. (MIRA 17713) 1. Institut radiofisiki i elektroniki AN UkrSSR. BASOV, N.-T., and VITKEVIICH. V. V. won the Probable Mechanism of GenerqUon of Nonequilibrium Radioemission of the Sun by Beta-electrons," ppper submitted for the Symposium on Radio Astronoqr, 30 Jul - 6 Aug 58 Paris BMV P.S. agronom. gii~~ Dusting seed oat$ with benzens boxachloride. Zemledells, 4 no.5: 120 My 156. . Mm 9; 8) (Benzene hexachloride) (Oats) xoma, 7v.ya. , Bmv, S.A. Interaction of an electromagnetic vibrator with a source of sinusoidal strain. ?is,-tokh. probl. razrab. pol. ilkop. no.4i 66-75 165. KM 19:1) 1. Tomohy politekbnichookiy institut. Submitted March 10, 1965. "The S,=etory Function of a Horso's Stomach Under Normal and Pathological Conditions. " Cand Vet Sci, Alma-Ata Zooveterinary Inst, Yin Higher Education TISSR, Alma-Ata, 1954. M, No 8, Feb 55) SO: Sum. No. 631, 26 Aug 55 - Survey of Scientific and Technical Dissertations Defanded at USSR Nigher Educational inst-Ittutions (14) USSR/Hw= and Animal Physiology. Digestion. The Stomach. T-7 Abs Jour; ~ef zhur-Diol., No 12, 19A 55722. Author LJXLQY.._~_m- Inst Alma-Ata Institute of Zoology and Veterinary Scieaces. Title Normal and Pathologic Secretive Stomach Functions in Horses. Orig Pub: Tr. Pama-Atinsk. zoovet. in-ta, 1956, 9, 145-151. Abstract: In 12 healthy and 32 sick horses the amount of general N was determined, of protein N and of globulins, of the residual N, of the amunts of urea (I) and of creatinine in the gastric juice (W) before the feed- ing of the aninals. Also determined were for the blood serum the amount of protein, the protein coef- ficient, residual N, I and creatinine before and after Card 1/3