| yuwenhui2008 |
2015-07-26 20:41 |
用ASAP高斯光束分解的方法遇到的问题
各位光学专业的大神，我最近在用ASAP对微阶梯反射镜（如附图）进行模拟。一束单色平行光垂直入射到微阶梯反射镜上，用探测器接收反射光。如图，理论上在探测器上应该也是均匀的光场，但是用ＡＳＡＰ的高斯光束分解模拟得到的结果却如图所示。这是为什么呢？ B /EGaYH
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 $O9#4A;
{f>e~o
SYSTEM NEW *pGbcBQ
RESET Wc/B_F?2
|uA /72
UNITS MM qUN XT
WAVELENGTHS 3.7 UM `$Vn B
s.!gsCQme
COATING PROPERTIES M`G#cEc
1 0 'REFLECT' wo ) lkovd
0 0 'ABSORB' `9VRT`e
SM `n:{N(
PARABASAL 4 z0tm3ovp
BEAMS COHERENT DIFFRACT yu'@gg(
WIDTHS 1.6 _ Av_jw`m
OWHHN<
A=1 (M t-2+"+
N=32 :LR> U;2
L=(N)*(A) `HM?Fc58
D1=0.625E-3 DIc -"5~
D2=(N)*(D1)
+r]2.
!! 微阶梯镜======================= U#n1N7P|$F
$DO -16 15 1 ?w "zW6U
{SURFACE 0a's[ >-'A
PLANE Z 0 RECTANGLE (A)/2 (L)/2 4"%LgV `
OBJECT 'MIRROR2_?' $C&E3 'O
INTERFACE COATING REFLECT AIR AIR zO)3MC7l*
SHIFT X (A)*?+(A)/2 ~jOk?^6
SHIFT Z (D2)*? + C[%^G-:
} $%3%&+z$I
GROUP MIRROR2_? D3;#:
SHIFT Z (L) - xU4s
ROTATE X -90 0 0 CF@j]I@{
!! DETECTOR====================== fUS1`
SURFACE _2S(
*
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 w:[\G%yQ
OBJECT 'DETECTOR' fnU;DS] W
INTERFACE COATING ABSORB AIR AIR `9p;LZC1 K
!! SOURCE ======================= um1xSf1Xv
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) |Skhx9};
SOURCE DIR 0 1 0 @7,k0H9Moa
!! !!TRACE PLOT========================= :pgpE0
!!WINDOW Y Z Vqxxm&^P
!!PLOT FACETS 5 5 !!OVERLAY ~myY-nEY
TRACE!! PLOT 5g;i{T/6~x
!!$VIEW h2m@Q={
\zyvu7YA
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY 77p8|63
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 /X97dF)zt
PIXELS (256) X< p KAO\
SPREAD NORMAL jB %aH UF;
DISPLAY 8~8VoU&
!! FORM 0.5 #w# :f
PICTURE o)
,1R:
RETURN
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