(Sanitized)

Document Type: 
Document Number (FOIA) /ESDN (CREST): 
CIA-RDP78B04747A002700020042-5
Release Decision: 
RIPPUB
Original Classification: 
K
Document Page Count: 
16
Document Creation Date: 
December 28, 2016
Document Release Date: 
June 26, 2002
Sequence Number: 
42
Case Number: 
Content Type: 
MEMO
File: 
AttachmentSize
PDF icon CIA-RDP78B04747A002700020042-5.pdf885.19 KB
Body: 
Approved For Release 2002/07/12 : CIA-RDP78BO4747AO02700020042-5 Declass Review by NIMA / DoD Approved For Release 2002/07/12 : CIA-RDP78BO4747AO02700020042-5 Approved For Release 2002/07/12 : CIA-RDP78BO4747AO02700020042-5 i.s.m9.u (3til izati-or, of -e,p"'Ca_!^ kgeaprtsar ,. _ a .~~ war Most UnefU1 light sources, tile s r~ R~.. lei I$l.~h z y lae a rar. xased in a. ram al,- nd i s ccrar-c iriata s. i.s x- . o will not),: i.die ":)tar rs.y; to fo a c:oIIJ".Mete:-I ILIA t ai.Porm or near uniform &rat ~ai.t*r, 4't+roy r- presented in a:s nddin8 order , 1 4 , rte a_ -I- r-- -- _' a...i F and MOq =.:s..~ 1 _.. _ . t a.. * s. a'Ei ci' a" 2`a."'1.~?:e4 t t3 t.Pin and r ~, ... _ . ~,. F a flW wn ; xa t: s s e,a the 1a.,. aa P < s p ( W;a k -::. s pa:2dization r ani . In, t ifor-uity of illumination arc j,r ves t 1 u .i i at= on much of the ;nr gy in still 1on't., to !:iUer" that rro. ucc the a ir_ vulty abs rbu the peak ri`t:eak ? ' ate' The fourth tho : uses "D L. 1 Ye' hOr7~i:~S d'(: " "t" r. s,:mim e to radYsw 'e: ibs. Lo c b"3w' l I Cast lager .~'. &33 ? 11(r - -1 - -111 t~WIP L 5, tIJ iZ f LOCI. o X i ; is l' col liter ntc r boil Of 11mt uniform a ebean-of Y rho Yj 12 a{r ;) for. _ r an q k radial d .s a wc for one ray..,, r'V : 0 .R o {#1'.nar +' it e u i r.va : C : t. 1 A .. '? ,, r d r 'phi.fl yields ;" $q(x'l) what* tz c.ea:t;;:.'& ka.,r;,,H'l.'.e we v 1 In a Pinzuad of $ ui- yr$ a e; 1z all the ,;yP ,iI path MGM, p. 't } y are K 4, 12 will also A an eqa7_ Phase r , i. ; i.e., - WAIL , N r -- difference between two .;.1 . ._ "z ,.x k .) r t` CU is the ratio of the 4 -.r C _ + "a ; , da . -1--- __-- - - ~Y. WS~S Ye ~V'f5. .7.EiG15~.~w. x~ j( j y~i f ~s t dtry~. y Kg,9{ '? ~ k-L I"r~`;I~b .~a6 -. ~i~:e 4 .. /t4 4:.# ce air, Approved For Release 2002/07/12: CIA-RDP78BO4747AO02700020042-5 tit (I) A A MV FP e 2002/07/12: CIA-RDP78B7A002700020042-5 Page r. Branch - Research Gao trio ~"k3:,:c t 8 4 ? yicId the for the radial posit-, Nr a an entering and rgin ,;', mow, r ? 'n G. Theae tppr a ticvr` ol. _1 1. my be cmbind to giv+o -din e xi' - cone ~7 iS? 1 i 1 4h xg ii# id n hi'k the i''..f ,'!:. iziitrJ IS. iAaera i. and 0 aie- the con-ven angle a of in.cid.~.rc 3 cI.F . G 'i 1 C L r$ fad} F.(% ro ??7 "L" :i fiist2eran . c at: differpnt 1~ha%~ad by Ct7~ & d1~, tG E. 1 a .:a.! iS+.1!lf'rkSfs#., :1r .'S l"#bge1 tIl!L i '.f:LIV b f.s} x'b r f. TeIAqcopj&,x t- Approved Farr F2 le Sep ~4} 1Ofil :CIARDP]&ffl.4z74 4?70009PQ4g7S STAT AppruveiJ F se 2002/07/12 : CIA-RDP78B04002700020042-5 Research `-t,,s ca~tia:6~ V. `1.?'tP11 a +? .f, a k.4t`.f d . 'j gg rcr ti mAy;: ri1a .rJ:'" i i rt t> STAT A, 12 8 P" t Approved For Release 2002/07/12 : CIA-RDP78BO4747AO02700020042-5 Approved For Release 2002/07/12 CIA-RDP70BO4747AO02700020042-5 r(Normalized Radial-Distarice Across Beam) ie 1. Normalized Laser Intensity Model #112 with Hemispherical Reflectors; RF Current = 78 ma; Intensity sured at the Plane Reflector) Approved For Release 200 /07/12 : CIA-RDP78B04747A002700020042-5 Approved For Release 2002/07/12 CIA-RDP78B04747A002700020042-5 optical path p(rl) Lens Surfaces ;z2 (r) r) R2 Figure 2. Redistribution of Light Intensity in a Collimated Beam Approved For Release 2002/07/12 : CIA-RDP78BO4747AO02700020042-5 STAT vase 2002/07/12 : CIA-RDP78B04747A002700020042-5. Page 10 of 15 20 1 40 60 P- (Energy Utilized) 80 Figure 3, Laser Energy Utilized in a Collimated Beam for a Given Ratio of Intensities Approved For Release 2002/07/12 : CIA-RDP78BO4747AO02700020042-5 Approved or Rel 100% STAT Approved For ~elease- 2002/07/12 : CIA-RDP78B04747A00270002.0042-5 Method 2 (Unmodified Beam) R (Normalized Radii) Figure 4., Ratio of Intensities as a Function of Beam Radii Approved For Release 2002/07/12 : CIA-RDP78BO4747AO02700020042-5 Page 11 of 15 :',~Ik-~DP78B047 10027000~OQ i 12 of 15 Curve n Method 2 (Unmodified Beam) P a 100% (0)% b 95 5 c 80 20 d so 50 Method 3 (Apodized Beam) P 37% (39) 45 61 Figure S. Unmodified and Apodized 'Beam Approved For Release 2002/07/1 Approved For Release 2002/07/12 CIA-RDP78BO4747AO02700020042-5 STAT 1=1.6.4 inches Figure 6. Optics Redistributing and Recollimating :P- !-. 980 .of the .Incident Laser .Energy Approved For Ro Branch Research (For: R1 = R2 = 2'; X (o) = 8' 1 n = 1.5 and.s 1.25) Approved For Release 2002/07/12: CIA-RDP78B04747A0027~W20_042-5 Resultant Intensity Approved lease 2002/07/12-:-CIA-RDP78B04747A0027000.20042-5 .5 sr Page 14 of 15 Figure 7.. Normalized Aspheric'. Surfaces Utilizing P =..63% of the Incident Energy Approved For Release 2002/07/12 : CIA-RDP78BO4747AO02700020042-5 Approved For Release 2002/07/12 : CIA-RDP78B04747A002700O20042-5 D(sr) (Radial Displacement of a Ray) Page 15 of 15 First Surface S1(sr) I 1 1 1.4 1.6 1.8 Figure $. Normalized Aspheric Surfaces Utilizing P = 98% of the Incident Energy Approved For Release 2002/07/12 : CIA-RDP78B04747A002700020042-5