SCIENTIFIC ABSTRACT PROKHOROV, A. M. - PROKHOROV, A. V.

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• Sequence Number: 3
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

i J;
T.I.
USSR
-A. BUITKIN F., Vi bedev Phy-
BATPUTOV V. 7701XV, 1~0
V.: B C
sics stitute, USSIT? licademy.of 6nqev)~
In
-ts
Tvaporation of Metallic Targc by int en~q eOpticl Radiatio,-q
jllos6cvl~ Zhurnal !'ksneririjentall noy i TeoretichaskoylIzil lau!
d ;-ust:, 1972;
5862--606
l)
p
A I UIVRAGT A theory of eirpa~~.-.ttion of inetals 5 ub j e rt ed to intense optical
'ti on.
-i t lip c ! Uquid-vai or: phaF a trai:tsi
radiation in developed o, basis. of th
method for the approximate solution of cowition is
ted which Den--its one to det temorature the su~:Pzze of a.
ges cnvdno 'he
target as a funo-tion of the, ii1cident radiation intensity : I with accrracy
u
Sufficient for exverimpntal purposep, It: is sh(run- th-nt ib en acc.-JAa-in critic-.,,,,l
7 8 2
value. ar the inters-ty ILs exceeded,, a new:. a
Ind 10 -10
utran.-7p-~wcncy wavall -- arises as a rerntlt,:of the loss of neta2lic pro-ocrUcs
by --the targc-t., in
2-a front of- the -.ave the into a lic-l-tid
dielectric. For I > I Vaporization begin to tL
al-,e olace; at the surf ace
rid

--sk
USSR
BATANOV, V. A.,'et al., Zhurnal Eksperimental'-noy i Teoretichesko3, Fizik-i;
!Au'gust, 1972; pp 586-608
of the "transwxent" (dielectric) layer, the tuntperat-'=e'Tmd of ceasc-s
to increase and rewairz belov the critical. TL-Ls L- 3-,,; r.,:inarated fron
ayer
the metal by the f.-cnt ol the transparency ivave prcpagntt'rig iittlo t"ie tarj~et.
TIds transparency effect is ace npe;,ran of'a -r of other
amparled by the a- cc raimb c
effecto i-rUeb nay serve for its. bbse~"iation, viz. a shaxip drop of bhe tar-et
-ble cha e,,:*Lii the dopmriericc of u --e evl ora-
reflect on ecefTicient, a considert r-9
tion front velocity on I ard finally,. the appearance c i --.' aimudmui f oll-Oved
by a monotonic decrease in the dependence of -the s-nccific- recoil ri~ci-iicr-tum on i.
Tbe~ latter effect was experijrtental!3~,~ observ d in,th in estigation.
e p prosent v
dts o'
The resL btained are.presented in-the DaDOrA.
2/2:,
G6

USSR
ROGAMIEV, A. A. ,
ASNIN, V. M., ZUBVI, B. V., MGM, T. M.,.a
aadez~!r of Sciencf,-
and SABLINA, H. I., Physics Institute imeni P. "V 6V
USSR
Radiative Reraombimtion of Bioxcitons in: Gerawdum
ID 0
cow, Zhumal Urtsperimeitta.1,1,noy i, Teoreticheskoy Fi iki., V 1 62, F 2, b
72t:pP 737-?45
Abstxacts T h earticle describes results of a study undeTtak-en -to obtaim ad-
ditional data on the natum of the lGng-vave recombbnat-Un xnadimtion line
in germnium, ezq well as -to detem-Axia the.binding enorg7r of bloxcitons. Some
preliminary finding-a were publichad in provims articlo-z by 1-he aLithara. Ex-
periments ife-re.pez-forazed on s=ples of pure n- and-p-typD gori=ium with a
-total impurity conter concentTationton Vne, order of am-3, Two methods
on were usndl
excitaii viz inaTice and volmae, Data were obtabied at T
4#20 K In a Rk'a mgm of axcltz-tlo,,~ InIvrol, va-riations zhiming1ho dopel-ldcrice.
of tne intensity of an exci-ton lino,vith a quantum en erj5ir h V i ro ev on
the intensity of a biexciton line: uith hi/:,- OM8 Ov. :A qun4ratic
1/2

USSR.
TaMt, et al., zhumal i teoreticheskoy Uzikil Vol
6Z No'2,7Feb 72, PP 737-745
deIpendence I sobserved up to concentrations nb 3,, 10 cn-3 pirhile a;t higher
plalnL
excitation levels there is a linear dovendenco, which ean be c,-x- A by the
effect of nonequilibrium, phonons produced when the exci+xors are bound into
blexcitons, 111e, energies Eb (dissociation ene;gy of an excitan raolecula) and
E ("recoil" energy idiicha biexcitort receives~ during pbonon emlss];Lon) were
found to. be 3-6-3-8 Bev and 2.0-2,2 Ecy respectively, TI.-O enam,
y of the
phonon produced'during formation. of the bioxciALon is 1.6 Hev. The exparlment'al
mults prove the blexciton nature ~ of the G. 708 ev line In germanii;wi. Regard-
ing the sbape of this line and its energy ition, it is.suggasttxl. th&t there
-Pas
is a recombination process In ubich annihiUtion of.one tacitoii is accompanied
by acceleration of another as a Rholeo
The authors thank- L. V, KELDYSH and S. 11.~ RYVYJN Do r au-s-eful discussion
of a number of questions touched uponAn the- atticloo
2/2

Tw
-ALEOMMOVY V. I., VORON-KO., YU. K., MIKWUSVICH, V. G:., OSTKOI_~V.ff..
Academician, WARINTSEV) T. M.,! UDOVENCRIK, V. T., and
G4':1F.,.FhYsics Institute izeni P. N. Lebedev, USSR Academy of
kli
Ir
naes, Moscov
Spectroscopic, Properties and Genemtion of Tid- in Crystals, of Zz-.O~ and HfO2"
Doklady Ak~derd I Nauk SSSR' VoY 1199,:'~ 1661~ql; pi)Ai~-1283
3+
~AbstTact: The svectroscopic -properties of Nd are knoum in various crystals
~v
and glasses. Mteria13 such as crystals of. t~~ 0J;.2) nmd!silifc~tte J;lasses
activated vith Lzod-,mium have been wide ly iis , A asers. The auth,,~rs of this
genera'ion of
article first describe the spectroscopic properties and . Nd3+ in
cubic crystals of ZrO2 end M-CO2. These mazerials have a~tluorite t.
cryttal.: lattice in ;:hich the 1101 ions reDla~e the tetravalent~ions of
t L - +
zirconium or hafnium. In addition. 0 the NdO the arystalu contained i=uri-
tiegLof CaO or 1120 for the -Durpose of stabilizing the cubic structure of the
3
ZrC2: and HfC~. The authors describe the ekp~ii=
nt and give 1 figurn and 1
table to illustrate the resultso The figure graphically phows,the optical
spectra of Hfo6_vd3+ ci- n rum of absorption, the
stals, includi g the spect
97

'USSR
H p
BMIKE F. V. K TIUK, 1. K., PC' EN!,O, 11, IM PAC-HIN'D
rly cs ins, iltute j-merli P. 1-4:: Lebcd(~V, Aca-ac:,,y 0.: 0
g f I' c0
flInVestigation of the Structure or a. Spark Produced in t1ho Focu.~~sjil. o a 'i
secorA. L-sar Pulse Ln Gases"
l~ppO%4-: Zhur-mal No: 4, 1971, PP U"
C C 0 w-,,l
n th ~;tr mg nonline. r
cl-o e A tion of' poiits of
-.1- V , ma
vm~att~lr. n, :irgon due -,j
v.-C la o,,;r r i -4, i ti C,: I~tndb m i it , W.,., J-n, 31itrojen,
'I --,,by la.~or r- Oln 1.) U 1. -S 0I~itll IL dtl-"Z'itiOn p i~-- 0
S ec ondz ~-md: a Dc-e--- of about 2 X 169:. ll-atz:- ~ The -me-chaiiinzi of tt--:i:3 rj'- mic--Cnorl,
-ed
to 'i,e self -fo~.--assLng of laser radLation 'im
which is ILn'- a iEas, J di
i;!a a b 1- ea kJ, n t h~ r e s-o
An- aplal~,,Sis Js gi of tho 2-C'mits of d--Crvl~matiozl of
s and focus The par-I In- by
s yci he szlf -
y zz-,az; o! or -:o cl~ -Ln7- p
-.fbOU5-7jn7 of.lasel- radia~iayi d6ve-lopmaht of brpahc~c-,.-n A mptica-1 frcqLn~n-
~s a s o ss ed figuaros.- !6 bibliogra iu~entijes~
C

USSR,
Physics Inst-itute imeni P. 11. Lebedev,
LUGOVOY,, V.. N.,
Scien
A-r-ademy of ces
tion the-Possibility of Generating Ultrashort Light Pulses in Lasers With a
Low1uminescence Line Width of the Laser Material":
Moscow, PisIma. v Zhurnal Eksperimental'noy i'Teoreticheskoy Yiziki, Vol. 15,
~No. 1i 5:Jan 72, pp 70-72
Abstract: A connected laser-resonator system is proposeld in which the genera-
tlon~frequencies ofthe laserrare~automatically selected close to the natural
'The system.cons
e sonator.:.
fr auencies:of the particular re ists' of i:i ring or
axial:resonator RO inside which there is a'.selec.tor for::transverst! types of
-oscillations, an active laser material, material active.lin. the -;nc.uced Ramn
emission spectiwi or in the )-hndelstam-Brillouin spectrujili, a Vide-Ijant
nonlinear aboorber, and a plaiie-p-arall(.-I.,re-.QLiato4- I~p To avoid. gener-
ation due to reflections from the resonator RI, one can uve a Farafta,,, cell
or Bet the resonator Rj. ~rlth a d-eflection, iorith respect tD the.direction
of'. t~ b, V
Le ta= he In tbis cane thosa,typos of wxillati- n of t e
112

USSR
V. N., PROKHOROV, A.M., Pis'ma v, Zhurnal~Eksperimental'noy i
Teoreticheskoy Fiziki, Vol. 15, 116.11, 5 Jan 72, pp, 70-72
resonator HO have the greatest Q for which the coefficient for passage through
the resonator R, is a maximum. in turn, the coefficientfor passage throygh
the resonator Ri has sharD rroxitrua corresponding to its 'natural fr(-:!quencies.
Theresonator R1 therefore sirrLultaneously~ftlls the role,of a.highly efTec-
tive selector of axial or lonaitudinal tykes of oscillations in the reL-)nator
Ro.and selects the generation frequencies-close to its nii-Atural frequencies.
Two cases are considered: (1) the material'active in t1ne;inducl-ld R!iran'_
emission spectrun is located in the resonator R 1, and in. the Resomitor 1~)
there is only active laser raterial, a nonlinear absorber generally bein,3
absent; (2) the material active.iu~the %ndastam-BrilloiAn stimulatedemis-
Sion Spectrum and the nonlinear ab56irber,! ~,~st.as the active laner materialare
located in the resorator RO and the -resonator. RI is f ill*d with . a linear
medium. It was found That in both cases:the generation- af ultrash;:)rt pulses
tral width exceeding,the width of the:luminescence.line of the
with a spec.
-active jase-_ -~z_-erjaaal is i:>cssible, apparently without lower ing* the laser
efficiency.

USSR
KAYTHAZOV, S. D., MDVEDEV, A. A., and OROVI Institute
Physics
imeni P N. Debedev USSR Academy of Sciences
"The Effect of a Magnetic Field at 400 kOe on the Plasma of a laser Spark"
Moscow, Pis'ma v Zhurnal Eksmerimental'noy I Teoreticheakoy Fizilci, voi 14,
No 5j. 5Sep 71, PP 314-316
Abstract: The possibility that a magnetic field has an active influence on
the geometry of a laser spark is due, in the authors' opinion, to the neces-
sity of simultaneously satisfying two conditions: the magnetic pressure must
be-greater than the gas-kinetic pressure of the plasma,. and, contiequently,
the relationship between field and temperature of,thexp as rmi
ma is dete ned by
the condition T 4 H2 /8 15T nk. In order to, eliminate any s ignificsint diffusion
of the plasma into the field) the skinol 'r must,.not:e1xeee4;the radius of the
aye
8 4/3 (where r is
spark (r). This leads to the relationshi~:T> 6-3-10 ro-h r-
the time constant-of the spark), since the skin la r A C-fr-l"T ~k , and
jo7T..1V2/;,
the electrical conductivity.of the, plasma: ~L Unless the first
condition Is satisfied, the plasma,is 4i"rsedi squeezing outAha- magnetic
tkmses: into the fi
f ield; if,the second condition ik~.not4attsfi dp It di eld.
el~

A
USSR
YAMAZOVY S. D., et al., Pis ma v Zhurnal Eksperimentallnoy I Teoreticheskoy
'Fiziki, voi 14, No 5, 5 Sep 71, PP 314-30
Thus, for the magnetic field to have any,significant effect on the geometry
of the spark it =ast be so high that, with 10'Wering of the pressure of the
plasma to the level of the magnetic pressure,'its:tempe~rature- is sufficiently
high that no plasma dif-fuses into the field. This leads to the conclusion
that a threshold value of-the magnetic field must exists, beginning from which
the field actively influences the, separation of the spa&. This results in
finding a value Of 300 kOe for the threshold value of the magnetic field.
Bearing this in mind, the authors investigated a laser sample in fields of
400 k0e. and built special equipment to carry out the investigation. The
significant influence which the magnetic field. exerts ow-the geomAry of the
!au
spark in these Investigations permits them thors to independently evaluate
the lower boundary of the plasma temperature.: The~characterlBtic parameters
of the spark are r 0.1 cm,Z'~= 3*107-7 ence it follows that the plasma
sec,wh
temperature is more than 6-105 oK*-.The aiticle eontains.~~2 illustrations and
5 bibli phic entries.
ogra
2/2
IN

`WSR'
DOBRZHANSKIY, G. F., KITAYEVA, V..F,, KULEVSKIY L. A., POLTVAROV, ?U. N.,
SOBOLEV; 14, ysi. -.Lnsti u:.
S N. PROMOROV, A M; ~:Iii ph
-P.- :~H -of
I'Spontaneous Parametric Radiation of the a-HI03 Crystal"
Moscow Pis'ma v Zhurnal O~csperinenta,Vnoy Teoreticbeskoy Fiziki,, No. 11,
5Dec. 70, pp 505-508
Abstract: The first observation of spontaneous parametric. radiation in the biaxial
Crystal a.HI03 belonging to class 222: of the-~_rhozrnbic.system is recorded. It is
'n adr
oted.that if a crystal having qu atic. nonlinearity is- exposed to a laser beam,
-of a laser h
there:is. a pr1obability photon wit, frequency w spontaneously decaying
into, two photons: a photon of the signal frequency w, and a photon of an additional
-requeency w2 so that
LOH W1 + W2 -
-.The frequencies of the sDontaneous:parametric radiation wl and w2 are determined by
acteristics of th crystal,; si c the process is effective if
the dispersion char e n e
USSR
PEI wif NUMM

j- Sp qy~ i teoretitheskoy
TANSKTY 'G. F' i mi _4~Mwifiqll 6 n
Dee 70, pp 5054,508'
ing,"c6ndition.is fulfilied
o ow
k k-1t 2-,
k
H
where IcH, 1, 1, and k2 are the i,.,ave vectors of thepumping and of the ::;ignal and
additional waves. The phenomenon is termed particularly Interestin;,since it is
observed even at pumping parers too small to excite paraynatric gene:i:atior~. and I-n
the absence.0'r
aresonator it can be used to obtain angular, te_nperattwe, and
eiectrooptical curves of active:redia suitable- for use in Tparametric generators
of light. The a-HI03 crystal was transparenr in the region 0.4-1.11 p and had high
nonlinear constants. No optical inhoniogeneities were ob~served in the refractive
_J iation'of high power.' density, a feature very
index.under the action Of Optical X'od
important in develop-ing parametric generators of light. A continuous argon laser
with wavelengths X., = 11880 A and X 51415 with an output power of up to I w c-i
112
each of the wavelengths was used for pumpin Parametric radiation arising in the
9
crystal and polarized.along the Y-axis was recorded in the directic.-i of pumping
propagation. Typical spectrograms of the spontaneous parametric radiation signal
are given which illustrate the depeadence of.the signal frequency w, on the direc-
:.tion of propagation of pumping in Abe crystal. : It -,4as nabed that such crystals can
be used-as a material to produce b-oth pulsed and continuovs parametric generator5
tuned In the region 0.6-1.3 Ii.
212
4-7

USSR UDC-. 621-375.029.67
BARCHUKOV, A. I., KONEV, Y.u. B., PROKHOROVI: A. 14., TER_rN,:'V- S.
"A !0.6 Micron Iaser Amplifier With Periodic Structure of. the.Amplified Beam"
Moscow, Radiotekhnika. i Elektronika, Vol. 16, ,.,lo 6, Jun ?1, pp 996-1004
_Abs~t_*act- An experimental study, is inade of a single-mode 002 laset, amplifier
~baiea,o -a. 90-meter-quasioptical mirror. ~rins~ sion line Ari est�mte is madq
a e lin6! correctors and amplitude-:
..:of, tkie. effec,t: which errors in. lign~ent of,~'ih
phase distortions have on beam-degra ions. ~ Basic design: data~ and character-
are presented for the laser. The output power is:more than 500 watts.
The study showed.that the proposed design could be competitive witii the tele-
..tcop:ic amplifier described by F. Riles and W., Lotus, (IEFL, J. Quant um Elec-
trordcs, .19058, UE-.41, 11, 811). The,.prInc;ILpa,l advantage,6f the gas laser
stulled in this work is the faat~that thephase correctors in:the line are
sirqxler devices than the telescopes in the Vii1es-Lotus laser. These correctors
provide periodic focusing of the beam, thus reducing broadening due to non-
that cells no nore than 20
linearity of amplification. Calculations..shav, -25 mm
'in dd.~mter should be used to simplify matching between the line and the optical
Usor # shifting the roatching itself. to the J",cr. The total Orpel.-irliontally
MeaSIL-ed 10050s, in Amplif ication: were toolhAO, to allofWany appreciable increase
.in output power.

Physics;Institute imeni P. N. Lebedev, Academy
P.ASHININ,, P. P., PROKHOROV A. M.I.&_~
~of Sciences USSR
I~Producing a High-Temperature Dense PlasmalUnder Laser Heating of .-.1 Special Gas
Targett',
Moscow Zh&n'al Eksp~erimental 'nhoy i..Te*cir-etidl-i~~k8~-~pizikl,* No.: 5, 'ilay 71,
pp:1636 M&
Ab,stract: The problems of using lasers to: produce a dense plasma of therl,,ionu clear
terperatUres are discussed in connection with quantum elr;.~cttrobics and the increasing
pes~of plasma h ting through
interestin controlled themonucleall fusio~:4 Four ty ea
the use of lasers are considered. The first version discussed is -the focusing of
n e F,
high-intensity laser radiation on the 'surf 'ace of a ~semi-iiifi, it - ta:ret of a s lid
cv.liquid mixture of heavy isotopes of'hydrogen or trItivm. In the
Second version, the target is a small cond,ensed particlel introduced -to or slcwly
entering a vacuum through the laser radiation focusing ~re ion. The third version
use of a gas mediumini; which, under the: focusing of laser radiation,
asaumes t e
hdating:-of tho'plasima. The fourth is
thete ocM_'WS: optical breakdawn and further.
1/4

F-P
USSR
5.
q
PASHININ, P-~ P. , TROKFOROV., A. 14. iZburnal 'eRsperimental Inoy i~teoreticheskoy
5 May_,71,, pp 1630
-b --d once 4p h' A 10 6~p wh-.ch :in -orin -
plication of a C02, -1 6r vithi:a-wayelengt
a~i
p e p s-heating of the:plasmawlth density of 10" cm
la this case in
~t f. of - of~magnetic containment of
he 'eld thermonuclear temperatures, one can speaK
a.plasma with magnetic fields that can be technically achieved in the foreseeaL
Pature. This last version however,is very difficult to discuss now, since the
experimental base is in the very initial stages:of development, although in addl-
-juc-
on.to-the.above it is also very attractive In view of the possibility of prc
'iciency of 10-20-". The first t-~Zo ~-;p-
:ing appropriate lasers with a f-irly high.efl
roaches are said to be mising, ~.since they inVolve the u:-,a of an
p the moat prc
density plasma with n. -- 5.10z2 cm-3. It is noted that the use of :i
s
ity plasma makes it possible to considerably lower -the volume ~of m:izter
e" -.on
this iin turn, leads to a.too rapid cooling of.the plasma up ans.
a.
requiring- lasers with a pulse length of !clO?, see. It is also pointed out:
evi indeter'
:final evaluation of the promise of these-tw&:versioni; is still y
dw- t o the inadequacy of-knowledge concerning the interaction of intense iasc-r
tion.with a superdense plasma, electron heat con* ductivit,,r ~in adense plasma w.1--!
66

R,
VSS
hurml Ek Fiziki,
FASHININ, P~~ P. et al, Z sperime~tallnoy i Teor'eticheskor
V I pp 1630-1636
KliY-7
5
considerable temDerature and density gradidntl and many 6ther p*rob-lems. It is
ointed out t-hat,by optimistic estimatest6 obtain a positive yield of thermonuclear
p
't is neces-
energy with respect to the energy in. the laser.beam for these vers i on s I
~sary--to have a laser with a pulse:energy,of,106 'oule unth a pulse duration of
-olasma.
10 9 sec, under the assumption that.all of.the laser enertw goes into the
U
Sinrp. the upper boundary of energy for suvh! glass lasers, ~v-i -1 hneodYinium predicted
-for the next 5-10 years is . in the range 104_106 joule, it is suggested that
the other versions be given more attention, particularly the third version in which
a irs target is used. It is showi that in u tic field of the order of
sing a magne
-7
10 oe it is necessary to use a laser u1se, of length r~10 with energy of
P
30105,joule to obtain a positive en.ergy yield. I vIith respect to laser- radiation in
a thermonuc,learx fusion reaction in, 4 mixtu of doutorium'and t UAM isotopes.
It is noted.in conclusion, that if aii:
Ultrastrong. retardat ion o.~- lasi~r beanis in a

~~USSR
VORON K02 Yu. K., OSIKO, V. V. PROKHOROV, M. ,and SHCHERBAYOV, I. A.,
Sir
:Phy ~s Institute imeni P. N.,
S ci einc 6s USSR
"
Stu ..of the Mechanism of an Elementary Act of, Excitation En Irgy Transfer
dy e
.-Between Rare~Earth Ions in Crystals".
Mosc*, Zhurnal Eksperimental'noy.i'Teo,retidhe.6koy Fiziki, Vol 60, No 3,
k tiw 7 1 p 943-954
p
Abstract: The micromechanism of the interaction of impurity ions in crystals
with one another and with the crystal lattice matrix is investigated. The
variation with temperature of the probability of excitatioa energy t.ransfer
between rare earth ions was studied using doubly activated fluorite to ex-
clude theeffect ofenergy migration~alongldonor ions. .,It is shown that the
transfer process varies directly with temperature, even in the case of the
absence of spectral resonance of electron transitions of~the donor and ac-
captor. It is concluded that the results indicate that the probability of
excitation,anergy transfer in the absence of o,-,er1zpping..o-; donor and ac-
a captor spectrn is determined by the density phanan states in the frequency
regioa corresponding to the Stokes resonance. detuning. -The machantem of
activation is associated,vith:.&e population of the phonon state
1/2

U 03R
I IYU1,
tit-Ute ei i P N hebedev, AC dr:".~iy of OcIences,
pllysi Cs a s -1
0 SIR
uby Lase2~ Pulses fo= eaourin -
Apilication Of Picosecoi'.d iL L~:'
D am p in . g~-T i m e- o the IJIZI !~~d -of th, e Olwno'n ~'.C-
laescelle
Exciton in CdSll
I.Vion 01
'pe U
e i; r i -Tporitiches',:,;)y -Vol 59
66qovz, Zhurnal E~csp -I,' n W.
34'-349
0, 2(6) 1970, p 0
ti
ib s tur ac t The object of 1-d s paper v;az~-_ to det-erl,_11-ie V-q.)
bail y the a t z e nu a t, i oa t _i ma e o IC a' iwm i n e s c e n c 0 b, W1. il i -n ;~"d j e -
IC-Zated, as.a result of - radiation recorabiriatioa Gf' a -fr e a exci-
"aneous' v w- C one lon-r- winal
-dj- u! -,ed~ 1) ,oton. zi~. I
ton., -, th a sim L. L, A t U
C_ 01. on. A p-reviouz-1-y described riaby ting
-C peco ~7alses vias usec, as :of double-)hc-~Con e--,c2.-
nCL
n-, ii~:CdS. The ruby iaser~ series of picosecond
by means of:~~a'sp,!~ a-, ~j~a a_' ie s:
Ses .1ror.1 Whicil Ci- te,~ ~a~ si'~; pul e
was' discriminated, e dis-crd.-ilina-'Ged' -=Ise ~f as di_- c c t e d 'U h e

-:USSR
KRASYUK, 1. K. et al. Zhurrial Eksperimentallnoy i Teoriticheskay Fiziki, Vol 59,
-'No 2(8) 1970, PP 346-349
CdS sample mounted in a cryostat at a temperwture of T70K. The CdS Lui'dnesccnce
induced by the ruby laser was directed at the ELU-57 photo=_Itiplier the elec-
tric signal from which was recorded by means of one of the beams of the O'LOR-02
-high-speed oscillograph. The oscillograph also recorded, simultaneou";ly, the
_j
generated radiation pulse, a portion of which was directed at a coaxial photo-
'K-15. A portion of CdS radiation was focused on the slit of a ISP-51
element FEE
lier it was
~spectrograph- By placing a proper filter.before the phatortiltip
possible to observe green radiation from CdS 'or a, blue ban(L of the f i:zrst phonon
repetition of exciton A. The experimental value ut.the ateq,~iation time! Vras 1.3
picb~ecbnd aser.* ~ulaea ro.- inyesti-
a.-,- It, AS, Concluded that ho - Use:.;Of
es in s Z~
rela.~dtion.proc.ess 6lid V.Ill ~n,akbi.:it, ~obaible~j to obtain a series

f
USSR.- UDC:.:None
A. A.Y PROMOROV. A. Mr SYCHUGOV, A., and SHIPL.7LO, P.
ZLEBKO
citing LaF Nd3+ Crystals with Monochromatic' Light"
3
Mfoscow Zhurnal Eksperimentallnoy i Teoreticheskoy Fiziki,,Vol 59, N,) 9, 1970,
PP 785-789
bstract; The relaxation time of the Darticles frcm. the 0.53 a b -
sorption band of Nd3+ ion-c.at "t h e4P' 3~2 ~'Level is determinEd, 'and
; I -,4d3+
the---transverse cross section..of the induced radiation in
-~i measured in lasers. pumpedi with monochromat-ic liG
crystals s
t has a d~-'~inite
e s
.-The- determination of this tim i important since i
the operation of Thei.resul. a o a nume
_~effect on he laser. t rical
four
solution of the problem of.exciting laser oscillat.Lono'in a
Ievel sy"utem with the re.1axation:time':taken i a ILI ooccoun-tI, FjLzlpt~,-
by-a light pulse lasting 150ns~ are:obtained.I Th-use rLsul'.z; arv
of
-the. laser radiation as:a functiuz
found: from a curve showing
through the use of a computer. Formulas are derived to d,,,-
t e r Ima i r. a-t.-he relaxation time from measu'rements: o.-C~ the time
first two peaks of th~e Iasar radia`iort curve r,.` '~'-e
-beti.,;!en 14he
PlImiAritz -pulse. The au-thora oxm ez~~ their gratitu4e to. M'. V. Dmi -
L,'-,,,,7_4d3+:crystalo and to Ye. M.
-id 'o. V. V. Osiko for the
truk

USSR
IMSUK.-- 1. x., PASHININ, P. PRO I.oThysles Tn.,!t1tute Imenl
4:-Lebodev.. --kcademy,of Sciences-VaSK
Observation of Induce&Compt,oh,:Absorption of Laser Emission in
a
Ppark:
Pis'ma Y Zhurnal Eksperimentallnoy, i Teore'ti~cheskcoy Fizi4 (Igtter;s to the Journal
of.Experimental and Theoretical FhyAcs),-Vol 12, No.9, .5' Nov.1970, p 439-442,
Abstract: The first experiments of the observation of induced ComPton absorption
(ICA) of laser emission by a plasma are reported. The total plumberr of radiated,
-quanta~reaains constant, but the radiationlenergy is tZansfered to the electrons
in.the plasma by the changwin frequency oUthe scattered quanta.. The spectrum
of the radiation that has passed through the plasma should, owing to the ICA#~be
shifted in the longwave direction., The experimental eq4, mentt shown in a dia-
gram, consists basically of a ruby User that produces picosecond pulses (50
nsec),- an optical amplifier, a. plasma chambor,with associated. filters and optical
elements, and a spectrograph. A beam splitte diverts p,~rt of:the energy to a
r
.-high-gled oscillograph. The energy: density.at! the, focU of the Uns systom was
--2 X1 1 watt/CMZ, which is con3JAeraWq,,.V!*atGr- than at a ,in 12tilium. Half
r

USSR
KRAMK, 1. K. ,PisIma v Zhurnal Eksperimentallnoy i Teoreticheskoy Fiziki,
1970, -442
:,Vol- 12, No. 9, 5Nov p, 439
of the pulse energy is passed through the~plasma, is collimated, and enters the
tophalf of the spectrograph slit. The other half is diverted around thechaz_
ber to the lower half of the spectrograph slit. . An arc spectrum of iron was
photographed simultaneously for reforence....Spectra obtained for h!Dlium and
aluminum foil plasmas exhibit lonSwave sWts wd short-wave nbsor,Ption. Part
ofthe energy is absorbed acrossithe entire W.Spectrum. N6,rmalizing the curves,
for brempstrahlung absorption in -heliumj the. integral abwrRtion for the, spectrum
:is 'l-3 (U-3) x 10-5, and the:mean abs Iorption-is 0.26 x 101 =-l. Similar ra-
sults are obtained when aluminum foil is placed at the focus In' thi:) plasma cham-
ber. The authors conclude that the spectrum shift is dub to iiaduced Compton
scattering. Other possible mechaniamsareiruled out because o.f time consider&-
tii~ns. The effect, therefore, can play a dominant role,ia plasma heating by
electromagnetic radiation and under given conditions can ~'Zreatly, erceed the
classical bremsstrahlung absorption.~which:is~veakened Pi, nonlinear effects in
strong fields. Effective quantities of anqrgy,oan be injacted4nta the plasma
only if the emission spectrum width is oo4arable to thelrudiati*n frequency.
'Tho authors thank F, V. Bunkin for-disaussiong. -Orig.,ar,~. has 2 t1gs. and 7
refs.-
2A

USSR,
-Fhys ibs Institirte imeni
KOROBKIN, V. V. , MALYUZHIN, A A. ,and lam.021W, A, M. ,
rX., 1ebedev of the Academy of Sciences USSR
"Pha'se.Self-Modulation and Self-Focusing of~the Radiation pf a Heodymium Laser Under
Self7synchronization of. Modes"
Moscow, Pis Ima v Zhurnal Eksperimentallnoy i Tearetidhesko~r Fiziki, Vol. 12, No. 5,
7 pp 216-220
5:,Sep0
_6
Abstract: Detection of the phenomenon of.self-focusing and phase self-modulation of
radiation in the active element of a_neodymium laserpperating in a i5elf-synchroni-
zation mode is reported. It is shown, that. theses effects bave a;cons`;~Lderable influ-
ence on
the nature of the gereration of this laser. The nrmlinear dhanges in the
~3m-dex:of refraction of the active element ofthe-laser arising under self-modulation
-and self-focusing are evaluated -A laser with a ring: resion'ator (T 8.5 nsec) was
used-in the experiments. The length of. the'active eiement;:was 30 cm and -dye number
3955 dissolved in nitrobenzene was :used as a Q-modulatcr., Pictures nhow a con-
siderable redistribution of radiation.intensity underlargo fields in the resonator,
while the intensity distribution, . in. a free generation regime was I uniform. Phase
-self-modulation is,thus said to.expi4in:tc~.a~consiaerable~degrea~the,atTucture of the
%~c s otr o
adlation pe um f,a laser.with.self synchronliation.

XSSR_
KONYUKROV, V. K., MATROSOV, 1. V.'s, PROKHOIROV~ A. M., SEIALUNOV, D. T., and
--SHIROKO'V, W. N. Physics Institute
Academy of Sciences
A
"Continuous Gasdynamic Laser With a Mixture of Carbon' bioxide, Nitrogen, and
Moscow, Pis'ma v Zhurnal Eksperimeatal'noy i Teoretichoakoy~Fiziki, Vol, 12,
No 10j- 20 Nav 70i pp 46JI-464
-Abstract*. This article reports that in a.;supersonic-vind tunnel to which a.
heated inixture- of carbon dioxide and nitrogen with a small quantity of water
-was blown there was observed an amplification,of infrared radiation, and
after installation of an optical resonator, in the.working portion of the
tunnel a generation effect was obtained. Studies of the amplification co-
efficient of a supersonic flow (M !- 4-5) were made in.a,wind tunnial described
previously by the authors, with the diffe'rence that thelgas expanded in a
wedge.~shaped, nozzle with an angle of opening of 13* and a length of the
supersonic portion of 5 cm. The stagnatimtemperature,~,vas 1,0000'K, the
stagnation.:pressuTe was 5 atm.,::and the dimensions of the critical cross
section were, 1.5 x 100 mm.. The probing ray of a single-~"mode,, sinije-fre-
im
..:quency C02 laser was directed7parallel.totthe'greater d, ension of the
OR

-- - --- -- - ---- -- _- -_ _- -- -- --- L-r- - - - --- - ---
- ~ - - - - - - -- -- -- - --- -

WSR
K., and FROXHOROV- A. ~,:M. P**z~cm ThE~tktLihm imeiti. P. R. Lebedevi-,
XUKR
V.
ACW16Y of Sciences,USSR FIM-11-VO,
-ZION
-'?On the Possibility of Producing an. Ads orlitibm-Gami-knami-in- Lasex"
Ow -Pisma v Zhurnal Eksperimental'.noy- :L ~eakoy- F4ziki, Vol- 13,
'No 4P
20 Feb 71,pp 216-218
Abstract: It is shown that nonequilibriunt exp_ansij=. in-. all supersonic jet of
~a two-phase gas-aerosol system can be accompanie& by Mulatlon inversion
with respect to oscillatory-levels of multiatomic. anis6tropic-molecules, due-
to,-oscillatory relaxation of molecules: in;tbF-- adsoxbed,:Srate on the surface.
-ac
..-cf.aerosol particles. It is noted thai surf e: relaxntion cotisiderably
roadens the choice of molecular; g"ed in 'which Lt:. is- passibl~ to, obtain
population inversion by the gasdynamic methiod- I IJ_* Lss_ zs~umed that the de-
pendence of the average lifetime of a mt;146de. im a: tinx-ohase gas--aerDsoL
wah�&- br
system on the type of oscillatory level at- the:mal -ule is located.is-
explained by the joint action of three facto=--. (~O: a---"-Ipcule or; being
adsorbed- in oriented in a certain way relatkve~ to- thL-- surface of the- ad--
zbrbent; -(2) the damping of different oscillatory,madm.af the Molecule
depends on its orientation ir the adsorbed..atzitr_;: (3) the. time of stay on-

-,777
j
USSR
iPf nA- Zhuxixal,. Eksperi=ntal'noy i.
V", V. Kr I- and, PROKROROV~;~ A M. Ls~-'t
4
460'reticheskoy Fizi 20~ 74 2J&218::
k_
the surface also depends on the orientation of. the. molecule: Expressions
Sara deriv 11 P-:'
ed for the time of stay of amolecule i ~th adsorled state as a
-function of its orientation; and the damping'af different oscillatory-modes
of a molecule, as a function of its
orb-intation theL surface. The ratio.
of the lifetime Tb of a C02 molecule in;~ a two-phase system on the surface
lager level to the average lifetime -rH 0 the, fo I
n ur: cioler levels is also ob
tained.and shows.that the lifetime of molecules on.thelower levels is l/.
times shorter than the lifetime on thelmirface laser-level.: It is noted
that in supersonic wind tunnels and in gasiynamicz lasers there is a common
reason for which flow in the supersonic, portion. becomes; two-ph&se: the
xPagon is the volu-inal condensation. of'vaV1q=% a:E th"a substances which
are contained in the form of small admixtures in: tha, gas and which have
gonsidorable vapor pressure in comparison with the; ttmal pressur,e of the
:9"~' The presence of aeroadl Oarticlea -,in, a gas: f1w ~then Causes attenua-
0 ue'to absiarption- andi tcatte;'cing by small
~,.tP'n of, the infrared radiation, . d
ticles.
r
4
212

PROCESSUIG UAT E-- 13NOV7 0
UNCLA:SSTFIED
~W-V,RC, ACCESSION NQ--AP0133689
.,A85TRACT[EXTRACT--(U) GP-0- ABSTRACT. 0MG-AN ELECTRON OPTICAL
TO. INVESTIGATE THE, Kli',IET.ICS ;SELF FOCUSING IN UQUIDS,
UCTE 0
SHOO JHAJ~ F ILAMENTS PROD AREiTHE RE-SULT$:OF-M0T!:0N OF.
i-*-,;;~X "UN D I V I DUA- CFOCAL;, P 0 1 NTSi A 15' RE FAC I L .1 T,Y USSR ACAD.
I--F j
's'C 1,
U Ill C IL 57-f -F- 1 E--
THE

"-212: '051 NCLASSiFTEO
u OROCE-5 S ING f)AJ'E--2014OV7-)
ACCESSION No-APO 127652
TR 1, C Ti X TR A C T- (U J GP-0- ABSTRACT. THE: THRESHOLO Fl-UX Fol' mEAKDowt4
E"'itl :ARGfjp4l~_AN0 HELIUM [NOUCED BY A 50 PICCSECOND RUBY LASER:.PLUSE IS
GATED.,. T-HE RESULTS SHOW THAT- BOTH'~ FOR ARGon A D HELIUM THERE
I NVE STI
EXIST PRESSURE RANIGES IN WHICH BREAKDOWN: 0 C C uk' S EITHER AS THE PESULl' OF
-41 St -M LTI HO T [t NIZATION OF THE
THE, AVALANCHE MECHAi -1 0 R AS A RESULT, OF! 1; p 0 D
ATG.14S JN THE. FIELD OF A STRONG LJGHT WAVE. rHE TWO MECHAMISMS, -CAN
"a E'. p -GUISHED THANKS 'TO. THEIR DI*FFERENT: DEPENDENCE 13N GAS PRESSURE.
IN
A 9 1, L. TIE$ ARIE ESTJ M-A TED
~OFJHE MUL T I PHOTOW: WNHAt40h, PRO8 J
--R ThRES~d -SRE,~K DOWN i FLUXE S . TiiE EX~RERII~IENTAL
LE vALUES GFTHE
ICNIZ
AT[ON PROBAVILITIES :ARE; COMPARE9 WITH
HOLD
THRES,
7. z
CALCULATED CN BASIS OF THEORETICA~ :,~DATA. elVAILABtf IN TUCE
'l-TERA E - F I ZUCHESK1..Y~~JNST ITUT P N LEBEDEVA,
TUR FACILITY:
NAUK 555RO

PROC ESS ING QATE--040CIC70
056 UNC L
I RC ACCESSION NO--AP0123371
c
'ABSTRACT/EXTRAC I-- (U) GP-O- ABSTRACT. THE Q(JESriON OF wiEmER FILAMENI'
-MOV If, i
SELF FOCUSING IS THE RESULT OF 'EMEN -OF INDIVIDUAL ~F(J%'IAL POINJS OR
WHETHER IT EXISTS IN.A STEADY.STATE IS INVESTIGATEI).~ YO CLARIFY TOE
PROBLEM.OF WHICH THEORY IS VALID JHE AUTHORS INVES71GATED TPIE KItiETICS
:~OF. SELF FOCUSING IN LIQUIDSt USING AN ElEf'.TRON.OPTICAL 11MAGE CONV~RTER.
THE. RADIATION OF A SINGLE- MODE LASER (11NE ANGULAR ANO ONE: AXIAL MODE;
-WAS PASSED THROUGH A-CELL OF LENGTH 10 C114 CONTAINING NITRORENZEiIIE OR
CARBON-.-BISULFIDE THE RAOIATION~AT THE~ 1.14OUT r0 T141E CELL HAD A PLANE
~.P AS
H E_',FRONT WITH AN -APPROXJMATELY~ NORMA]L.',_JR:ANSVERSE! DISTRIalITION. THE
~:WNWTHEii PUrk WA,~ UP TO 1.5 MW
ER. -OF THE; INPUT BEAM iWAS 0o 5: MM
tENGTH ~OF~ SIMIALR-T0.15 NSEC:' L.IGHT:4-ILTER WAS PLACES rim
V TRA'
''THE IMAGE CONVE -miSMI 17T ED: ON L Y: L AS F
-RTER~ WH CH -R RADIATION.~ A
TYPICAL PHOTOGRAPH SHOWS THAT AT: THE OUTPUT OF: THE ~V'E S S F t. THE OIAMETEq
-OF THE SELF FOCUSING SPOTIS APPROXIMATELY' 5 140t CORRESPONOING TO THE
-THE RECORDING SYSTEIM, THE SFLC FOCUSING
RESOLUTION OF 8VOT EXISTS
SMALLER -THAN 0.5 NSEC AND THEN DISAPPEARS; THEN. A SUBSEOUENT SPOT
S r, ur
-~APPEARS AFTER 1-2 NSEC AT THE SAME PLACE. SnmETIAC-l A HER SELF
FOCUSING SPOT APPEARS AT A DISTANCE OF Sl 141 L A R TO:$O MU71 BUT THIS IS
OBSERVED. 1ERY. RARELY. UNDER JHE-~CONDITJIJONS OF:' THIS EXPERIMENT THE
MAMUPVlALUE OF N EQUALS E-E~SUBCR~COIAJPAUENIT t0 7 1:: WHERE E IS THE. TiN?TJTT
FI EL a:-~ STRENGTH -AND ~E SUBCR EQUALS 1-SQL IAR E ROG T OF.1411 SU-BZ (KA) PRIME 2 K
J:S~_ITH&. WAVE NUMBER, A IS TH& RADIUS-OF THE INPOT BEAM, AND N SU82 IS
INDES OFREFRACTION).
- ------ ------

USSP UDG 6217-378. 325~
'OV, Y 1-1. , PROIMORROV, A. 1.1. , Acadomician, Phys s Institute
IA1, ER.
D
eni P. ademy of Sciences USSR,, lo.,;cow
7-1. LebeMMV oi the Ac A.
Tharmal :Distortions of Laser Resonators in therCase of Act-ive
R d in.lu~he Porm of Rectaniraiar, Plates.
0 3:~
;SSSR 'V01 192, 1~0: 3, 1970,
Moscow, Doklady Akademii Nauk.
PP 531-533
-or the caae
Abstract: Thermal distortlons of a: laser resonat -in
ol~, a neodymium glass rod in the f orriv of, a rectangular plate are
analyzed. It is noted that many theo-etical and experixiental
studies have been devoted to. thermal dis4-ox,tions of las,i,r radia-
U
tars, but in all these pkpors 'the active eleman-tUs were in the
form of circular roda. It is also nointed out that r noo trymium
gla3s is the basic laser material iiaed for pro&ucinT,. hi.~,,~h radia-
tion intensity, so tho problem of thermall distortions of tho
resonator.is a narticularly prezsing~one; a-l-so,'t the.,pomm.ibility-
04, varying tbhe physical properties of the glass material by
changing tho corm., osition of, the glass makes it pozlibio, in
hich "he difforont mcbanis=
principle, to produce a glass for w.
leading to thermal distortion of the resonator aompensw;& one

USSIL"k
DIANOV, YE. M., et al, Doklady Akademii Nauk SSSR, Vol 192,
Na 3, 1970, PP 531-533~
2!_ _V) V
7. . i ,
1;,' L-V
T
EAs youngis modulus; Q is the Poisson~ooefficient; q/V and p/V
:_aj~e-photoelastie const-ants -characterizing the change inthe:index
f-re-raction as.a function f def G
. 0 orma,tion: in:.~ dire tion
0
parallel to or per-pendicularto the-plane of polarizatiDn of the
ssing light, The path difference-Ar of-the.rays passing
pa
hrough t-he point x 0 and x x'. given in,~the form.
t
L
IPT'k + (2.8 T
L (1-V)
Si lar formulas for light polariz6d,along the,~y-axis aro
mi
APY(XI - LJOT 'aE (B 51,)] T (-T) + LIU (it
(3)
E
T (x)dx'
(I -V)
a E
-(B. +D~
L it f3-F.x

33

USSR
UDC 535-02
_tARIONTSEV,~ YE. G.,
KGRNIYENKO, L. S., KVARTSOV,.;!L%
4
Academician PRO
NNOROV, A. M.
Its Properties of a Solid-State Laser With Large Resonator
Length"
SC
0
ow, Dokladj Akademii Nauk SSSR, Vol 193,s No 6, 1970,
pp,1280-12d2
Abstract: The laser dealt with, in article has a resonator
~Iosc leng-Uth is of the order of se-verail meters. With increasing
-or b. nd wj.dtAI,. to tha
~resonator length, the ratio of the :resonak.. a
frequency Lnterval between the longitudinal =dez can Irba signi-
ficanuly increased.. With the ratio larger than unity, in turn,t
the band of the resonator can be significantly~.exnlarged, and it
can then be expected that the characteristics of such & laser
will be close to those of a laser with non-resonant;feedback.
Resonator lengths can be increased:to values of the order of a
kilorieter under laboratory conditions by intro6ucir
ar~ optical
delay line into the laser.. A sketah of.the scheme under which
mpanies the article. Through the use of
this can be done acco,
such- a delay line, the diffraction: losses as wall as the dinen-
1/2

MAM
Y.ORNIYENKO, L. S., ot- al, DoIclady Akademii Nakijk S35R
Vol 193,
No ~ 6, 1970, pp 1280-1282
sibns of the experimental arrangem6nit, C a nbe e:;santially reduced.
alita~'ve conalu-
au hors fi nd that they can draw certain cu U.J.
The U
sions concerning the larZe resonator len.-Ith laser by consider-
ingtheinteraction of three longitudinal modeso. Anal-sis of
j
nly slightly
excitation shows ... that it -do-oends o.
~on --intbrmode coupling arising: due to,modulation of the inverse
on and that the coupling strongly~affe'ts the j.ntensity
POPU
~:~,~~':distribution of individual Modes in~,tha os'cilla* tion spcoti"im.
-7-A.
~2/2

UNCLASSIFIED- PROCESSING DATE--230CT70
052
T-j.lTLE-_-PROPERTI ES OF BORON THREECHLORIDE~ANVITS USE: IN THE CC SUB2 LASER
DESIGN:~"U-
(0.2)-KARLOVr N.V*t PROKHOROVI ;:A*M*
C-OUINTRY OF -INFO--USSRt UNITED STATES:
S_GU RC E I E E E- Jo QUANTUM ELECTRONICS J:U~Al v:lNOL:* QC16t NOs 1, P. 3-At JAN.
E`14946 ~_;19KJE IEE.~ CONFERENCE ON, LIASERI ENG-I EERING;.ANVAPPLICATIONS POST
_,S'UB'JECT--AREAS--PHYSICS
.TOPIC TAGS--LASER 0 SWITCHINGv CARBON DIOXIDE LASERP BOROWCOMPOUNDt
LASER PULSEY LASER. -FREQUENCY i LASER RADIATION? (MEMICAL
DECOMPOS IT ION
CONTROL~ MARKING--NO RESTRICTIONS
DOCUMENT CLASS-UNCLASSIFIED
PROXY REELIFRAME--1990/1319 STEP NO--US/0000/69/006/001/CI003/0004

J-,

'ice:
Ace. Nr: Abstracting Serv Re'. Code;

CHEMICAL
~A'rOO.50267- ~70 dg~izv
103301q Thermooptical tharacteristks of glasses activated
by,neadymium I?bl 01M 1. M., ma~gnv-
SK -1, l7 .5,
A `M" F
Letiew', ev a. mew. U SSM, ~V*Ok, -7r, NAM

thod 'to. menAL-re 9
TYA (RuSQ2 :A. new 'me he
tit tioptiml cn~st; I m. a (n r- Is giv~-n, r. a
the coeff. of linear': ?)-~Qliisl6n of a giiti-,4. n ieffactive index,vid
n.~, Th,~'tncaiureni~nt was dore hi;ihe
or.x,thc ternp CC&T,'zf

on 10-45- for wa~vdini~hs 0.63 and. 1 -15 JA*, by usim; At 2
r
e"i
light source Ne-He,1a5vr,LG-l26. 'flip temp. gmdient. ptrlicn-
dicular to the liglm bewn in the 11) X 60 X 130 nimlyl;is
produced by Nvatt~`baths,qine of cnAsi. te~m;i.' at :10" add,*the
h 2
other with'te 16,45d. Xdinpb~apn nil
~
4
thc
pasainj:
min to sep.' earn
holes U rain erm sect- b
gtass through the x6nes with differek ttmp4li was ~std. 13~ in
optieal systern it bras p6s~-ible to folloir the ebangi'61 the opocal
pa &. A NX -: L I I 7A 7, w li crc .3 IY: is t lie no. of in tzrfe?ince
fringes shifted after the temp. gradicht was tormed in the glass.

REELMME

1. 1 il: ~, .'-- -
Ztn -. . . . .. I I I ~ 1; ~ .1

~ApoWs!)23 CHEMICAL 6 076
ion ex-:
t~~ I 16427q Technological erties ~f, wekkly basi~c au.
clitaxigers. during the chern desalin4ation -of 'water. rokho-
icat
Yom-k. M Wsm'TeDlot! -1j. lnst-*Mos(~~-w`. ItsR
ek
mtrgelika-19697T N
-111 lRuss). New weakly. haAk.' anton:
hanger- AN-18 and -AIN-3 I - ave bee
cxc it develotxd to4eplace
. . . . j . -- 11 ~ I ty
-2F; t6tk.ievm1ed!- low tstpaci
the itiefficient. AN, * i
-AX-I&Whidi'was taken f6ru the
:axid ird,~rior inech. properties~ 6
produ'aton. I'lic A"I'ris'im'hims,biin it% to poiv~i~'
with differci ipfts~ o waWr. Its lab. ittM p p4tits,
-it con f ca
act pgrows
front 80 to 1*2930
- andJ
with 40, 52i and -to g. I cqu when the resin. is ex-
NaOH/g
hausted with 3.5 rneq,A. IICI at 10~ in./hr. In the plaiit~,, it is
060~-]3r)Og.equiv./m.3[6ra~ckeiieiatioil'iat~of4.5--67g.~NaOll/
g. e4uiv. and at the filtration rate of 10-4.5 ni./fir.
'e calracity
decreascd to 300-1100- j, i4ttiv./in.3 i~ ~.31 plants fter (12~279
cycles and passage ol 30,000405,000 61.1/m.2 of resin, o%Oing to
the adsofption of org, tuatUr and to thii increan of broken resin
particle!i below 0.42 nim. to 40-57r/,0~3_011ch~ is dfii v);t1it PI-I
changes during the regeneration. viss, loss rcquin~s thr'ri~lace-
"]Cut of 350 tons of AN41 annually. ;A' iiupro-~Tqd gtanWated
n
I cles.
resin AN-31G I as only of broken particles after 150 ~y
The GOST 13504-68 standard for testing 'of inecl-a. properties
which requires 2 lirs. of shaking of resin sample with cond~ensed
water should also include the alternating action of XaOll and
HCI. J. paluty
:19551249
L

A. I.,.- , "- -
I:- t P~~ ..
I . Fi~ S ~.
M!"M . : - i,~ i235 ~.
~:- i-~

oilf

R
-A
Ins =.eni
- I - -., p
B. Z., 07aBUT, Y litute
GO =1gVr, hyS3-C1 5
IRBENNO,
ACadCmciP-n1 an"
P-0 adevV 0 11 Si , es USSR, '~VOSCCV
Lebedev, Ac 1 C enc
pulGe;~ Us' ng
se,, xj Ultrasiort
j~jr. CdU
-OP' eakdo*'m
i al Br
gation of c
W-t :Convc' or.
S e' .10togral .y ~;,h an lr40~:
p7
ed
-Y4
voi. 1 7~ .1%
Izauk SSSR'
Dorlady Akadeld
1,'.ozc elval bl~tween
or ---c C.-L-
Irk devc-" Series
T~,e dynamics 01 Gp. in aircc-use- y
May'l-m- asr;oids and
e,, ,., exaniaed in s' oj~ the P
laser rMIG 0 ZT-y
Llcs u-izG hjGh-spec4 Pa
0-,~ laser p'C alice "net Ian -,:rLl POints of
0- u 1 "1 r a *h e d-~*S~ 01 t" a
'on pulses scat~c7cd by thom~
r =4 used to det-a-mirie VA'a .'y war, 1;1!;0 UG,::d
- .:, 0-
r- *re -pJaGMaj1
wave in t y different frair, tiae vrer-
-7.4,cal Shoc r -ab
a- the veloc't'y 4.ay be cons:~, Q,- IIplbotoz~!IphG are 5h"
y !0-15 1-jec.
UG sn, 0v . th ken cvQr 1-ility Of
q0tog7apjs were ta ve",
n5ea-
ty. p.
valoc- C7
nt 0, anazi,..over an int0;'Vd1
~ -_ m re a
j.
of tae dexe!OPZC t.;~jo, - I
hotoar.
r om I e , 0 C:L-,:r 0 ;hcP
as naasurcd I Whilt, thc ".VC:'N .10
c njazma
~-ijze'jnterval 0 2' a
C14rce ovor v. o 0 W ho"~ p3-":;:7" Wi
cra-
"4 to 10 00 cm/see, since the
te eGzat lacv.
'r 01
CLACC Gccun~e4 r,
vc--

, .,1 1-1 - , ;~ -1
~:. -,. : : A
1-1: -1 1 :1

It
U.-M!"Off,
11 min 9, MR
C,

W,
Cam Mj-
--R7(FzFo, 7: 11
, Oft- cran
l
D-04- from pe, rk-q %n
ited

il
$a .4,106

band to,t), m I eq; c49
Vi -40
On. Od oillie b'
14.400 q

7
Ir kyj

dl

09 SiC AST. '
PY033

- -- - . - i
t - .
! . i w j 1
~E" . I d ;I ;I; 1~ i - . , i - :
w . Ii . ;
I a .. I - . .
: I U I ! 1 1 lit , _i - _; - : . a !
i I

a
77-
97
-'2
-T~

,
All, d blkOa
fM Pulse CO Wil hib III 6U
Mh"
."

M

EU. J.- Qwntum'~ -14 j t- `
:i WALQIIA~ ho;
-
'
' - p.337!!(I

' Vlay 1 68

.
64
~h
C
(Fricei
ariti;
Fit',

A 7
j:
~
M Tt
l
A tract o ygIV

use
nch
Pump was s
onized
with I e %itch, s4ible to obtain
I
S In m
.
r
y
9.
'
iLs 30
the Q-switch Putso: i~*ny phasepV p[m -Ole. :rate

the P
Hz and U rOmq I E Owra"s '!iXthat w
Te,,. there is
'

' ctO' .4
-an opurn in& th z4v'
um:, ay in p~iro c ravity aftci~ the dis Arge St cd.
'
Ib~ ' Ise '
' ed' _' eaVditil 'after the is6arv~ W&s
giant pus IntOSILYAncreas . save Ieq
.
switched from CWt6oWs6i;'Th~'inviriidn~is4'tiilie -2 ms d its lifitime
was
was stronglydep6dent on thc'discharjc'.~*Orc 6e to. pldsm ~) eiting d4fing
the current pulse. lnc~6sing_thc heliiiiii Oce6enthge in the disc
f
i ha -sc prol6dgt!d
the
nversion li
etime becausd.or I~gK thermal c nductivityorhe
0 w gas.
-F

:C'L' 2
b
03
.1
.
/9

p
A-
I-S"
ell
PPOO04819 J1
Ps -!4,628-t
USSR:
'KIN, V. I. PPOKHOROV
B
UN F V., KON M. and:FEODOROV, V B (Ph:z~~
Institute imeni P. N. Lebeal-v,"Tc-ademy.,of Science USS
y_"Laser. Spark in 'Slow Bu rn ing Models
-:110s6o, Pis'na.v Zhurnal Eksperimental'toy i Teoreticheskoy :~iziki, Vol 9,
Pwl,
U, 7,
L,.-1969 -pp 609-612
-with a neod fum
Abstrict-._~ During millisecond-pulse experiments rm lass laser
ne. to butn at a thrdshcld below
laser spark,,:in the discharge space vas noted
t at, -of w
h Light breakdqwn. The process starts ith an electriral b eakd:)wn in
the 01scharge gap, W~ere the ionized gas abi3orbs- the laserx1idiation. Thi
S is
fallowecL by the burn, then the laser pulse. The zLxisywnetri?': spark along the
-ted
beam axis-is much longer than the initial region *of. ionizatipri and buri
muvly t-~;-es longer than the
duraticn of.t-he electrical disChal7ge, being
r-n the radiattion intt-rsLty
gove ed by the duration of the generated pulse
7 2
threshold of, the effect is -10 watt/cm that:',of..the light' breaPdo-wn at
9 2
a -LW.Spher! c vressure 15 1 C, wattilem
Ina

-AR9004819

The spark in. th2 5-vni discharge gapj passfng between -,vo needle p;:,ints
to 6 kv-by a er ptjjse',:which
6.5 mf capacitor.,` is initlatdd by a lAs

.l~7-,~~:-,I:---,
,evapotates.'some metal ,
,
f ro.11 the Peedleis.-: PetAls of the vi~lble effect are
-
.,gi
ven,.
The threshold of the effect is 730 joules- Tbe spark ~biirning protess is
"stationary and--its average speed of developmenlt:is 40 to 50 qi/sec. Th-2 pro-w

C 'Ss io e
Men d to slow burning of . gas-:srtd differs from effects producl~d by
t
aser pu ses.

Orig. art-bas 3 figs. and 5 ~'refs-

094G.t:
.-,

~----:AP00048=
J RS: 49267
MIIIOV~ -A. A., LUGOVOY, V. 'institute Imeni:
a. and
A~ Physics
NU Lebedej~ &,jjejrv of, Sciences ~ISSR
"S-elf-Focusing of Ultrashort Laser Pulses"
os C a v, Zhurnal Eksperimentil'xiia i T~oreticheslroy ftziki
owl, Pis, Y V01-9,
No-12 20 Jun: 69,. 675-679
Abstract: The- propagation of "uItrashort", UOL pulses in a~; aonl-"near mediu-2,
iihen the length- of the pulse trains can.be muchiless than-(or of the order of)
-the.width of the laycr in which the self-focusing occurs, isidiscussed. This
case J-s Contrasted wi"th previously, considered.cases when the- leng~-h of the
11-aser pulse is.fairly great: i.e., the length of the light train is consider-
ably greater. than rbe width of the layer of the nonlinear inedium throv:gh Wbich
the Im-er bax-, passeni, Analysi.s of the field ~equati' n-S
0 for case shows
-ocusing o
f the Eght be-am:(w m -mr
that self a, rioxina I jireat4n, J)'n the
PO
ordinarv critical Dower) occurs even. in. the case Urhen the liEmggth of the cor-
res ding light train is much less than the ~har~acteristic.~self-:focu.,,,,ing
Pon
llen-'h. Tt is noted that a ba-.~ic featur here is, the exi-ct(ince of A number

Goot
SCI. ABST. :,Sa-r
43e
!601 OptkW hcazentiq of-ruby its cannection with Wer
"Ito. V.YaAhaimov-N
emissron chamctcrisflcs~, Yu.K.Danilci
AA.Mancnkc,
v L
tjaj~~~ (P,& Lhedkv ~jIVi
(Ma~ 1068~.
7EME- J., Quantum Elecirt-ni,
-s (M). Vol-QEA,
-Conlercn6c, Miami, Fji USA4';14-17
(1968 intemational quantum. electronics
May 1068~
Abstract only given. The optica hoij~ogenejty or the'crystals,%vas studied by 49
observing the intcrrerence and bim6ingence pattirtis Ud the far-fiel&ifi~~nsity
rob he Ri-Hetlaser A`1h them qjuform
distribution using, as a ' ' Ii ht "' ;
plane wavefront beam. Sood co"Oelation Wits found beiw&n the lascr Oira
c
teristics and the optical propwits or, Iliciinvestig4t4d ruby samplq.;T1hO!dlJTd:
ent sources of the optU inhomb$gh r crystals grown he
_city 6 rUb3 Y t
Verneuil inethod and their iduefice citi di'laser ~W, 6itristici!ire analyzed. It
is 'shown, in particular, thit, the 1kirrii'diverpocc:. ands ~ the.
rArnaution for.the Users; whh'$a6c-pii;i9c in rimrs as a resonatorl e1c con-
nected to the iridex of ref raction m dgerwity, iv c its due rhiiiHy t6 iionuni-
form chromium concentrati6n aid'the internal itrains in the investiptO ~ftlby
j
samplies.
0940
IRV!

ABST. SER... A 0
ATIC052400 -scl, 00

L

5335 On the problem 43f iwlf-focu n btams,
of intcnie~Ggk V.N~Lt~u~
*
- y
~cd
c2f
ff(Ph 51
T
IFEL a, X""_ ffr Eka c I
68).
(1968 inicriational quariturn USA, 14,17
196F

Y A -dig
Ab-qract on)y'givc;j, substantially JS frAkWi -ital, ~Vjtlon f. t "t PY~K~Cln
eaased bythe Kerr efTea, is dbtair4f.-

0906*

w mmi~, MOO

A"
71
'd J~
ij R,
1*0002011- C
HEMICAL AM,, '033~
t
96493
c Vibrationd refs..
errwpSIP Iku expandin
M ti
-

V. K. 4.-Matrosov. 1. V- l- i-
J
alu
bov*. DIL:T.:

'N,~ (Fix I-Ost.-M
M ;,

Zh
Y The
via,
.

is
a orpti r Col.ta~irin" A
ton, o i ii. tir"Pil a
_'~jffd v.,; fdh ed b~ the
0 , ~ n 1 1.

di - _'f

l" 'I* slit
'pr iminart y heated. jik., ix
pan.,pig ~ r",i it um

~to."tlii 44V

'itiK:t* - ofithe uJixt., o
was studied. The brak p. X and C04 was
f

OK.'r the i36~ 4
1000 9 presstiF!e~ 2 aj
di

00 th h'
distante-betw Itedthiiibserv i
mm.; e eelit~.t e coor t
w ere t - las d-the sli
h :he ~r beam:cil
QW, 4-n t pline . xva,~ .1.6
A: Merto
cm. .~ The,results of m riefioi&fts it
-
U
t conens, jo, j CO,

,h iin-
Ant e tnu

Winced and.the degree ocilnoiie!ises i~lth itickeas-
of, fili
.:
~
, I -
N ' . t in tile viiito -Thi riWcajI64 tiir~i
bf the CG~. j~bls.
in& unten
-
in the flow is -1 /io
the: jitiftikkitio.1 -.6eMtid thi sho
'
'
-
~ g_rq
:front. For the mixO. contii -4
I N h
af
Patt: 0, t e cqnqn. of
"
the
COx mols. in the uppir luer lel~if (00! 1) ~ncrewes owing~
'selective transfer of vibrational 6xciwti6n'fr6m,IN tki CO*. mbls.;

the N. Mots. remain longer. in ditr excited ' ate In the flow"
St
;
ih~, IN
:premises concerning the~effect of a gas-d~rmmic laser on
'b
1 ex
Mora"
and CO
mix ts
ts
are confirmed
these
.
.
,
,
y
p
,
~

%PFRT
q-
0008001, CHEMICAL ABST
eTist! bt tho, Ca,rj~Dyl+ pulse laser
?I 130014e, Vine cliaract CS
Dz
m sing e-mode gerleratiom, Whiblaldullif.i L; Murma T N
ro (USSR)." UPL-.YPM1-OSkI. 191
__P kbiaroviA Al
a.nd a-, on,-of oscillation, fnadc$`Was'mt~fie d, out. The.91='_
_electi
threshold Was studied a~ a: fiinctioii (11P1 ]F~ oil jZLIII.
Jbr.kverA,vaJucs of lav2r :mMstoft
ccfntists 4. regularly spnerated jiackeits Elch pac et win PrIsim
i n th
_~iemts. Th, r~gilq'r -.Pr 6 are not ild
C mc~ C-1 Coll
to:fr,.i ient genera Proct Th sm _qL
ration'- t-off which Imig-to th lice of the spikx-t
geTic ~ Cu C, PWt~I~a
discussed. V. ~5urjxzl:
550,001
R. ~_~Mm

ACC NR: AP9009821 SOURCE CODE '-'-R/018116910111002/i)335/0338
Y . ~z
AUTHOR; Vinogradov, Y. Zvereva. G. A.; lrisova, 11. A.
~Mzidcl'cttax' T. S
ORG: riziic~heskiy inst-itu'L in.-P. N. Lebedeva A." S S S (P sics
hf
Inst:[iute),
2+
TITLLEI: Study of EPR of CaFi:Dy at Y 4.2*K and in the 1.2-2.35 mm
range
SOURCE: --izika tverdogo tela, v. ll,~ no-. 2, 1�69, 335-333
NGS. matic
MPIC T, , laser opt.ic materiali laO~r.spectroscoVy, parana_c
laser, dysprosium. laser,
AB5T?ACT: ZPR 0; CaF2:Dyz+ was Investigated ezparim--ntally ac
T = 4.2*K and in the X m 1. 7~2. 35 -,wd range (which ould easi.q be
eXcended lowcr) for transitions betweei the EM and T,M..'CVC15
51& term- The eypusrimental CaF1
.V ral
of the S 5 In diameter
And 20 = long and its ends Were planc-parallel, Tho~ paper alrio
definezz the ragnitude of the Initial iplitting,betwean the: E(2) and
TIM. levels arid the position of these aad the wave -tunctions vith
respect to the magnitude and dire Ct,on :of a cons tant'~wagnetic field

._, .:.- ,;, " , - ;~. 1 ~' -: . : :: - ~T_ T-
CC- NI AP9009821
within the EM and'TI,(I!'
the C-5-1coc range. The:dependcace of
level energy on the magnecic field for if IY'31 and I I ;'j C.
arc given, as are the experimental and theacetical curves for d3e.
dependence of transition wavelength on the mapitude of the magnetic
field Rd - , nic valce of the initial splitting.was 4 867 cm
The experLment made use of a flcrj-th=ough resonatorje~!; spectroscope
with a backward-wave TWT as cre rkicrawave escillator. The authors
thank V. Vi Osiko for preparing the crytitals, K! V. :: K+ I va fa::
help in the x-ray analysis,, and II. A.~.Yershov for coooeration in
6e computations. Orig. Art. has- 3 'figures. [WA-141 11YKJ
1.104
SUB CODE: ZO/ SUBM DAM" 02SWS/~ PUG: rXF: 0061~ OTR 'P.Srs
2/2
Card

I

USSR UDC 548.55:612.373.8
BUZILI"ISKIY, I. 2M. DIA110y, YE. M., MAMONOV, S, K., MIKHAYLO'VA
IIkL. H. and
M., Acad~mici~n, Physics institute imen_-J-F_~7_'L'ee-_e_dev cf the Aca-
~de~y'of Sciences USSR, MOSCOW
."Thermoopfical Characteristic of Glasses Activated by:NeodyTium"
Yo-scow, D"oklady Aademiii I
14auk SSSRO Vol. 190, No. 3, 21 jan'70, pp 558-561
Abstract: The problem of the thermal distortion of laser resonators a.!;sociated
w i th the development of glass lasers with a high energy density is dis..-ussed. It
is noted that the active elements of neodymium-,activated glass lasers have a high
optici-il hamogeneity; the change in the refractive index in a transverse cross
7 for-a 2.5-cm rod, However, this high
section of the rod does not exceed 1.10
homogeneity in the glass does not occur during.laser operation,due to a tempera-
ture gradient developed by nonunifom pumpinp: th 'is gradientAn turn, leada to a
gradient in the index of refractlon.,, A nw rietho.4 is maen~'ed f0, lnea'During
-directly the thermooptical. constant,W of glashda i, and valuesl.. of W, 11ra g iven for
the lfollwlng neodymium-activated glasses.-.XGSS-3j XMS-7,, WS-24~-50 1:3's-28-2,
MSS-46, LGS-36, and LGS-41. The Wo--126 neon hellum laser was used as A source to
measure the thermooptical conatants~ln the temperature:interval 10-450C at wave-

TO 019600-
U gwo
R
S
TED-
M B. Z.. DROZnT-,. V - A,,: KAn$MV., S. D1 DME-1 A. A. 6
GO
XHORV~, M., Academician, and TOLMACHOV. A. M., tute. i Me n i
2R:0
Pf Science!
"Investigation of Optical Breakdow d byMtra hort Rilses Using
wrn In Air Cause
High-Sp"-d Photography With an lmage:Conver r
'9'
Moscov, Doklady Akadenii Nauk SSSRP Vol. 187, No. 4,.l Aug LD Pp 772-774
Abstract: 'The dynamics of spark do 'entL or tho entire tnterval bet;ree:.)
VejopM
filr izrluif!4' by Fi sertril
laser pulses was exAmint-d in utudyiag the brenkdo~ni I.u
of. ultrnshort laxer puls6s, usiag higb-!spaed:~ photogrhphy oU the planmt-idt; and
the atte'red by them. Thi dists~ce;blm OPn tile; poivts or
'rndiAtion pulsas Gc tW
n 'fithe
breakd=i wan used to determine L the average velocity of the prr Ivig- ticia
apherical abock wave in the plamm, -analyais: of the photo&'~Plhy sria alno: Ij ~Crl
-to shrjV that the maximin velocity may be condiderably,differc-nt 1','on tLhe a-fer-
1961140Z

USSR
UDC 621.375.9
BATANOV, V, A. BUM-fMI, F. V. PROKHOIROV A 14 -Academician, and FEEOROV, V. B.,
Physics Institute imeni P
N. LebedeV. oT t~edemy,of Sciences USSR~ Moscow
-Ibt!Q Puthpin I
"Gas Dynamic Molecular Laser With 0, it
Moscow, Doklady Akademii Nauk SSSR,.Vol. 191i NO.. 6, 1970, .Pp 1267-12:59
mfolecular~gas lasers with
-incoherent optjcaj:pqmPing qre claimed to
-have'a relati e y
'V I broad sDectral.b d- for,th6: ~~,morption of.'pumping light i-n. a
malari~rely narrow width of the work~ng:transitionJine. An infrared ::roleculc
laser is proposed with optical purriping to them molecules' rozation-vibration
band im the electron zrroun,,1state by incoherent radiation fTvm a "Fixed" shock-
-r- fro,
wave Which arlses during the stationary flow of the working:gas rrdxtm m a
-re -t-!~on of this
nozzle in an underexpanded state into a gasatmospht ~ T.hel compi)s!
-gas-.may eitbe r coincide or not coincide with tbe:composition of the wcrking mix-
ture n. e working mixture in this discussion is assumed Ito. be COo + Nn + He, in
e
which the he i
I ium plays the sa= -role. as, la Cq~.: lasers with. C412 el~eLtrjc! discharge.
t 1 01btain izMersion 'but; it is
Lz it. noted that the nitrogen is not necessi~U7 .0
desirable since it increases t-he eff6etive iifeti= of.the upper~laser level 0001
(aic). a-ad broadens the effective rotation-vibration bazd of the ptmDir-rr absom ion.
t

rs:
Usta
J
N. V KNO V, A. M. SMOV, it. i~ V. and SffCI-XLCV, M.': YA. Physics
X
ca_demy'.~ o Sdiences-, U
jns~titute.imeni P.,, edey, A SSR
j:
lliich Are Self-? u
bt, loddl P jht
0c P:Lpg:,.t Y-110,
89sco-4-1 Pis ma v Zhurnal Eksperizent ticbesk6V Fizika Vol. 11,
noy::i:~ pore,
5 F~b JO
pp 153
~,Abstract'- The question of whether filament,self focusing i s t- o rosu'ft of' -ave-
men
~t of individual focal points or whether it,exists in a s'~'eadly stat t-, is -in -
-vestigated. To. clarify the problem,of:mftich tbeory is valid, the; aut".3ors In-
T
vestigated the kinetics of self-focusing,in liquids us in~ an electron-optical
iMage,converter. The radiation of a single-rPode . lGaser: (one: anguli-r a7:.d one
axial mode) waspassed through a cell of length 10 cm containing nizrcbenzene
orc,:wbon bisulfide., The radiation at the input to the cell had a plane phase
front with anapproximately normal I
transverse distribution, I'lie diame!ter of the
Inputbeari was 0.25 mm and the power was up to 1. 5 Mw for a pulse.length of
Ii415 nsec A light filter was placeLin f-ront'of the image c>nverter which trans-
CA
rtu e
d only laser radiation. A typical:photogr~p'h.sho~s that:at t he output of
the~vassel the diameter of the self-foc~sing-s 't' -.Ls apprOX3.mately 5 jj , corr-e-
po
sponding-~to the resolution of the recording system-. The sel_4'-focu5ing spot
exists