| 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？ ?v-Y1j
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 zh5'oE&[yC
TMt,\gTd
SYSTEM NEW '[u=q
-Lv
RESET HQi57QB
TBq;#+1W
UNITS MM f:$LVpXS-
WAVELENGTHS 3.7 UM 3f'dBn5
!'uLV#Y EZ
COATING PROPERTIES BcJ]bIbKb
1 0 'REFLECT' en\shc{R]`
0 0 'ABSORB' Wtl0qug
x!\FB.h4!(
PARABASAL 4 U?/UW;k[
BEAMS COHERENT DIFFRACT =n
$ @
WIDTHS 1.6 vCC}IDd
OkSJob
A=1 k+k&} 8e
N=32 :,.g_@wvG
L=(N)*(A) D>& ;K {!
D1=0.625E-3 =GO/r; 4
D2=(N)*(D1) -$pS
{q;
!! 微阶梯镜======================= &cj/8 A5-
$DO -16 15 1 ">b~k;M?
{SURFACE XD\R D
PLANE Z 0 RECTANGLE (A)/2 (L)/2 }@IRRe Q
OBJECT 'MIRROR2_?' \EH: FM}l,
INTERFACE COATING REFLECT AIR AIR d~L`*"/ )[
SHIFT X (A)*?+(A)/2 ciKk azx.
SHIFT Z (D2)*? EZvB#cuL-
} hK= \O)
GROUP MIRROR2_? CbK &.a
SHIFT Z (L) $V"NB`T
ROTATE X -90 0 0 @\gTi;u/x
!! DETECTOR====================== p%304oP6
SURFACE JyPsRpi\
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 )k5lA=(Yr+
OBJECT 'DETECTOR' Sz0M8fYT]
INTERFACE COATING ABSORB AIR AIR mT
N6-V
!! SOURCE ======================= w, 0tY=h6
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) wK 8/`{B9
SOURCE DIR 0 1 0 MFHPh8P
!! !!TRACE PLOT========================= GD1=Fb"&)
!!WINDOW Y Z G?-27Jk8
!!PLOT FACETS 5 5 !!OVERLAY uM0!,~&9|
TRACE!! PLOT '[shY
!!$VIEW #plwK-tPR
\Cx)
~bq<
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY # k+Gg w
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 .%+`e
PIXELS (256) NLDmZra
SPREAD NORMAL hq9b
DISPLAY 2G"mm (
!! FORM 0.5 G'XlsyaWrb
PICTURE t1HUp dHY
RETURN
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