球面激光光束整形器：SYNOPSYS 光学设计软件

;LXwW(_6d  
激光器的输出具有非均匀的高斯强度分布，并且对于某些应用，人们希望使其均匀分布。 这是激光束整形器的工作需求。 h7"c_=w+  
处理办法： ,|RN?1?U  
这项工作可以通过多种方式完成。 对于具有球面的简单透镜，它需要以重新分布光的方式平衡大量的球差，降低光束中心处的能量密度，同时在边缘附近增加光束。 使用非球面表面更容易，其中人们可以更好地控制要引入的像差量，如果使用衍射光学元件，则更容易控制。 问题是后者比球面镜片贵得多，所以我们希望看到我们可以先做些什么。 5mYX#//:  
考虑到这一点，我们将尝试一种全部使用球面透镜的方法，以确定我们可以制作光束的均匀程度以及我们需要多少元件。 让我们从一个非常简单的设置开始，我们将继续优化。 DQ*T2*L  
将腰半径为0.35mm的HeNe激光器转换成直径为10mm且均匀至10％以内的光束。 ,ut-Di=6  
这是我们输入的初始结构：

HPz3"3n!  
    RLE                         ! Beginning of lens input file. ID LASER BEAM SHAPER "-T[D9(A  
    WA1 .6328                 ! Single wavelength x,% %^(  
    UNI MM                     ! Lens is in millimeters d^(7\lw|  
    OBG .35 2                 ! Gaussian object; waist radius -.35 mm; define full aperture as 2 * 1/e**2 point. "!w#E6gU  
    1    TH 22                 ! Surface 2 is 22 mm from the waist. @$aGVEcU$  
    2    RD -5 TH 2 GTB S     ! Guess some reasonable lens parameters; use glass type SF6 from Schott catalog SF6 Pb
`Uxv  
    3    UMC 0.3 YMT 5         ! Solve for the curvature of surface 3 so the marginal ray has an angle of 0.3 31^
Jg  
                             ! find spacing so ray height is 5 mm on next surface )4MM>Q  
    4    RD 20 TH 4 PIN 2     ! Guesses for surface 4 Q_r}cL
/A  
    5    UMC 0 TH 50             ! Solve for curvature of 5 so beam is collimated. <%iRa$i5  
    7                         ! Surfaces 6 and 7 exist A+w'quXn  
    AFOCAL                     ! because they are required for AFOCAL output. $Vp*,oRL  
    END                         ! End of lens input file.

{)jTq??  
    FLUX 100 P 3

VtN1
[}  
    DD: DO MACRO FOR AIP = -1 TO 1 d@XXqCR<  
    COMPOSITE                    ! Ready a composite definition. TT@U_^o  
    CD1 P FLUX 0 0 AIP 0 3        ! Composite data number 1 is the flux at a relative Y- coordinate of AIP g2;lEW  
                                ! (defined later) on surface 3. cE;n>ta"F  
    = CD1 ?:42jp3  
    Z1 = FILE 1 yiw4<]{IX  
    = 1 + Z1 2Onp{,'}  
    ORD = FILE 1

J= [D'h  
    CHG NOP ,v%'2[}  
    9 UMC END uOO\!Hqq  
jF}-dfe  
    PANT                        ! Start of variable parameter definitions. VLIST RAD ALL    ! Vary all radii. Yb=77(QV  
    VLIST TH 3 5 6 7 8            ! Vary the airspaces and two thicknesses (so AEC works on those elements). END ]h?q1   
H76iBJ66  
    AANT                        ! Start of merit function definition AEC |M&4[ka}  
    ACC C-@[=
 
    LUL 100 1 1 A TOTL            ! Prevent the system from growing too large; assign upper-limit of 150 on TOTL. |h?2~D!+d  
    M 5 10 A P YA 0 0 1 0 9            ! Ask for a beam radius of 5 mm on surfaces 9 and 10 ?I[*{}@n"  
    M 5 10 A P YA 0 0 1 0 10 >
UQY3C  
    M 0 1 A P FLUX 0 0 1 0 10   ! Ask for a flux falloff of zero at several zones on 10 E<jW;trt_  
    M    0    1    A    P    FLUX    0    0    .98        0    10 !:PiQ19 'u  
    M    0    1    A    P    FLUX    0    0    .97        0    10 A;<w
v>T  
    M    0    1    A    P    FLUX    0    0    .96        0    10 /&c2O X|Z  
    M    0    1    A    P    FLUX    0    0    .95        0    10 uzI=.j  
    M    0    1    A    P    FLUX    0    0    .94        0    10 L#",.x  
    M    0    1    A    P    FLUX    0    0    .93        0    10 \h"U+Bv7  
    M    0    1    A    P    FLUX    0    0    .92        0    10 6w=`0r3hy  
    M    0    1    A    P    FLUX    0    0    .91        0    10 $g^D1zkuDT  
    M    0    1    A    P    FLUX    0    0    .85        0    10 RA!q)/+  
    M    0    1    A    P    FLUX    0    0    .8    0        10 Mf2F LrAh  
    M    0    1    A    P    FLUX    0    0    .7    0        10 $J^fpXO  
    M    0    1    A    P    FLUX    0    0    .5    0        10 AhD C5ue=  
    M    0    1    A    P    FLUX    0    0    .3    0        10 j^7A}fz  
    GSO 0 1 5 P                    ! Control the output ray OPD over an SFAN of 5 rays. u0GHcpOm  
    END                            ! End of merit function definition. O%3Hp.|!  
    SNAP ae2Q^yLA  
    SYNO 100

|{&M#qXe  
    CHG NOP {fnx=BaG  
    13 UMC END jQ,Vs=*H  
,sIC=V +  
    PANT                        ! Start of variable parameter definitions. <sw@P":F  
    VLIST RAD ALL                ! Vary all radii. ~ ;LzTL  
    VLIST TH ALL zGFD71=#  
    END BY.k.]/  
jM&di  
    AANT                        ! Start of merit function definition AEC v
eH
e   
    ACC 'L7qf'RV  
    LUL 100 1 1 A TOTL            ! Prevent the system from growing too large 59O-"Sc[  
    M 5 10 A P YA 0 0 1 0 LB1   ! Ask for a beam radius of 5 mm on surfaces 9 and 10 puJB&u"4L  
    M 5 10 A P YA 0 0 1 0 LB2 ~N/r;omVc  
    M    0    1    A    P    FLUX    0    0    1 0    1    0       ! Ask for a flux falloff of zero at several zones -?-XO<I  
    M    0    1    A    P    FLUX    0    0    .98    0    LB1 ~\mh\a&  
    M    0    1    A    P    FLUX    0    0    .97    0    LB1 ."H;bfcL_  
    M    0    1    A    P    FLUX    0    0    .96    0    LB1 {G Jl<G1  
    M    0    1    A    P    FLUX    0    0    .95    0    LB1 QXZyiJX}  
    M    0    1    A    P    FLUX    0    0    .94    0    LB1 UWF \Vx*)b  
    M    0    1    A    P    FLUX    0    0    .93    0    LB1 !uQT4<g  
    M    0    1    A    P    FLUX    0    0    .92    0    LB1 >;^/B R=  
    M    0    1    A    P    FLUX    0    0    .91    0    LB1 8 ECX[fw  
    M    0    1    A    P    FLUX    0    0    .85    0    LB1 QJ3#~GYNr  
    M    0    1    A    P    FLUX    0    0    .8    0    LB1 7IkPi?&{  
    M    0    1    A    P    FLUX    0    0    .7    0    LB1 E?G'F3i  
    M    0    1    A    P    FLUX    0    0    .5    0    LB1 %W"u4 NT7  
    M    0    1    A    P    FLUX    0    0    .3    0    LB1 ~x
^y5[5{  
    GSO 0 1 10 P                ! Control the output ray OPD over an SFAN of 5 rays. GSR 0 50 10 P bAPMD  
V6X )L>!xx  
    END                            ! End of merit function definition. RbX9PF"|+  
    SNAP ,\s`T O  
!,$#i  
    SYNO 40

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8L  
    CHG nbF<K?  
    CFIX |n/;x$Cb  
    1 TH 0 !?nO0Ao-$  
    END {^z73Gxt,  
    DPROP P 0 0 13 SURF 3 R    RESAMPLE