球面激光光束整形器：SYNOPSYS 光学设计软件

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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。 DZ(e^vq  
处理办法：  @X  
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。 0ot=BlMu  
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。 ^V_vpr]}P  
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。 d\'M ~VQ  
这是我们输入的初始结构：

BY32)8SH  
    RLE                         ! Beginning of lens input file. ID LASER BEAM SHAPER H2p1gb#  
    WA1 .6328                 ! Single wavelength ([`-*Hy  
    UNI MM                     ! Lens is in millimeters UIIunA9  
    OBG .35 2                 ! Gaussian object; waist radius -.35 mm; define full aperture as 2 * 1/e**2 point. *.n9D  
    1    TH 22                 ! Surface 2 is 22 mm from the waist. #oJ9BgDry  
    2    RD -5 TH 2 GTB S     ! Guess some reasonable lens parameters; use glass type SF6 from Schott catalog SF6 +twJHf_U  
    3    UMC 0.3 YMT 5         ! Solve for the curvature of surface 3 so the marginal ray has an angle of 0.3 3[-L'!pOX3  
                             ! find spacing so ray height is 5 mm on next surface >c;qIP)Z  
    4    RD 20 TH 4 PIN 2     ! Guesses for surface 4 a:H}c9$%  
    5    UMC 0 TH 50             ! Solve for curvature of 5 so beam is collimated. WVf;uob{  
    7                         ! Surfaces 6 and 7 exist e J2wK3R  
    AFOCAL                     ! because they are required for AFOCAL output. =/Vr,y$  
    END                         ! End of lens input file.

g>T'R Vb  
    FLUX 100 P 3

`cMa Fc-y/  
    DD: DO MACRO FOR AIP = -1 TO 1 /8Ca8Ju  
    COMPOSITE                    ! Ready a composite definition. 3:dQN;=  
    CD1 P FLUX 0 0 AIP 0 3        ! Composite data number 1 is the flux at a relative Y- coordinate of AIP - 
"h {B  
                                ! (defined later) on surface 3. "a>%tsl$K
 
    = CD1 Cf@WjgR  
    Z1 = FILE 1 oT_k"]~Q~2  
    = 1 + Z1 enDjP  
    ORD = FILE 1

Y{f;qbEQH'  
    CHG NOP X3<<f`X  
    9 UMC END JY4 +MApN  
AW%^Xt  
    PANT                        ! Start of variable parameter definitions. VLIST RAD ALL    ! Vary all radii. {6 C!^ 5  
    VLIST TH 3 5 6 7 8            ! Vary the airspaces and two thicknesses (so AEC works on those elements). END [;83 IoU}  
bTb|@  
    AANT                        ! Start of merit function definition AEC }9:d(B9;  
    ACC A@f`g[q  
    LUL 100 1 1 A TOTL            ! Prevent the system from growing too large; assign upper-limit of 150 on TOTL. g()YP  
    M 5 10 A P YA 0 0 1 0 9            ! Ask for a beam radius of 5 mm on surfaces 9 and 10 l"*zr ;#  
    M 5 10 A P YA 0 0 1 0 10 vRVQ:fw  
    M 0 1 A P FLUX 0 0 1 0 10   ! Ask for a flux falloff of zero at several zones on 10 bX=A77  
    M    0    1    A    P    FLUX    0    0    .98        0    10 B14z<x}Q  
    M    0    1    A    P    FLUX    0    0    .97        0    10 |9@?8\  
    M    0    1    A    P    FLUX    0    0    .96        0    10 CM!bD\5  
    M    0    1    A    P    FLUX    0    0    .95        0    10 TMT65X!  
    M    0    1    A    P    FLUX    0    0    .94        0    10 qVx4 t"%L>  
    M    0    1    A    P    FLUX    0    0    .93        0    10 %f*8JUE16  
    M    0    1    A    P    FLUX    0    0    .92        0    10 ![0\m2~iv  
    M    0    1    A    P    FLUX    0    0    .91        0    10 .Q>
.|mu  
    M    0    1    A    P    FLUX    0    0    .85        0    10 #JWW ;M6F  
    M    0    1    A    P    FLUX    0    0    .8    0        10 Kn?>XXAc  
    M    0    1    A    P    FLUX    0    0    .7    0        10 69p>?zn  
    M    0    1    A    P    FLUX    0    0    .5    0        10 VK[^v;  
    M    0    1    A    P    FLUX    0    0    .3    0        10 6H53FMqr  
    GSO 0 1 5 P                    ! Control the output ray OPD over an SFAN of 5 rays. ,KdDowc  
    END                            ! End of merit function definition. 0h_9  
    SNAP ?<%GYdus  
    SYNO 100

YNRpIhb  
    CHG NOP |Rd?s0u  
    13 UMC END ; $i{>mDT  
*:{s|18Pj  
    PANT                        ! Start of variable parameter definitions. &7VN?ox1  
    VLIST RAD ALL                ! Vary all radii. o:W>7~$jr=  
    VLIST TH ALL FAX|.!US*p  
    END =8?y$WE  
YC8wo1;Y!  
    AANT                        ! Start of merit function definition AEC :k*'MU}  
    ACC ,.A@U*j
 
    LUL 100 1 1 A TOTL            ! Prevent the system from growing too large ~:'tp28?  
    M 5 10 A P YA 0 0 1 0 LB1   ! Ask for a beam radius of 5 mm on surfaces 9 and 10 C& BRyo  
    M 5 10 A P YA 0 0 1 0 LB2 3LN+gXmU  
    M    0    1    A    P    FLUX    0    0    1 0    1    0       ! Ask for a flux falloff of zero at several zones Qz=F nR  
    M    0    1    A    P    FLUX    0    0    .98    0    LB1 xQ+UZ
c  
    M    0    1    A    P    FLUX    0    0    .97    0    LB1 9~n`6;R  
    M    0    1    A    P    FLUX    0    0    .96    0    LB1 _kg<KD=P  
    M    0    1    A    P    FLUX    0    0    .95    0    LB1 zo6|1xq  
    M    0    1    A    P    FLUX    0    0    .94    0    LB1 r'/&{?Je/  
    M    0    1    A    P    FLUX    0    0    .93    0    LB1 z6)b XL[f  
    M    0    1    A    P    FLUX    0    0    .92    0    LB1 ?<)4
_  
    M    0    1    A    P    FLUX    0    0    .91    0    LB1 Tsch:r S  
    M    0    1    A    P    FLUX    0    0    .85    0    LB1 `u$  Rd  
    M    0    1    A    P    FLUX    0    0    .8    0    LB1 +pXYBwH 7Q  
    M    0    1    A    P    FLUX    0    0    .7    0    LB1 X6)%2TwO  
    M    0    1    A    P    FLUX    0    0    .5    0    LB1 JZI)jIh  
    M    0    1    A    P    FLUX    0    0    .3    0    LB1 U*(/eEtd-  
    GSO 0 1 10 P                ! Control the output ray OPD over an SFAN of 5 rays. GSR 0 50 10 P ~"|MwR!0  
;)$bhNFHx  
    END                            ! End of merit function definition. M15Ce)oB1(  
    SNAP Zgy~Y0Di  
E6JfSH
#  
    SYNO 40

2qd5iOhX+  
    CHG " GRR,7A  
    CFIX ;>hRj!  
    1 TH 0 gxnIur)  
    END X1*f#3cm#  
    DPROP P 0 0 13 SURF 3 R    RESAMPLE