| 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？ bG(x:Py&
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 Rv<L#!;
t
je,c 7ZFO
SYSTEM NEW ?KB@Zm+#~
RESET =p q:m
b,Ke>.m
UNITS MM ox[ .)v
WAVELENGTHS 3.7 UM qp>N^)>
Wwhgo.Wx
COATING PROPERTIES o&z!6"S<
1 0 'REFLECT' d`Oe_<
0 0 'ABSORB' 3rNc1\a;
hU" F;4p
PARABASAL 4 T#@{G,N
BEAMS COHERENT DIFFRACT hsz^rZ
WIDTHS 1.6 Ns<?b;aK
Ux}W&K/? '
A=1 B`{mdjMy
N=32 2 z7}+lH
L=(N)*(A) \0?$wIH?
D1=0.625E-3 2JZd w
D2=(N)*(D1) qnJ50 VVW
!! 微阶梯镜======================= {q,?<zBzu
$DO -16 15 1 s?c J V `
{SURFACE OPuj|%Wgw
PLANE Z 0 RECTANGLE (A)/2 (L)/2 ^ H3m\!h
OBJECT 'MIRROR2_?' rslvsS:
INTERFACE COATING REFLECT AIR AIR jO8X:j09A
SHIFT X (A)*?+(A)/2 ^=+e?F`:{
SHIFT Z (D2)*? ]-:6T0JuS
} k! 3 cq )
GROUP MIRROR2_? VRbQdiZ{
SHIFT Z (L) {x {H$ f
ROTATE X -90 0 0 Vb!O8xV4;+
!! DETECTOR====================== \ u M? S
SURFACE V _"f|[1
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 {DwIjy31T
OBJECT 'DETECTOR' T SjI z5
INTERFACE COATING ABSORB AIR AIR |4mVT&63(
!! SOURCE ======================= q]FBl}nwl%
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) "IFg RaP=
SOURCE DIR 0 1 0 `/4:I
!! !!TRACE PLOT========================= H0>yi[2 f
!!WINDOW Y Z bL`eiol6
!!PLOT FACETS 5 5 !!OVERLAY $a( `ve|
TRACE!! PLOT dv!r.
!!$VIEW M 0w/wt|
>o/95xk2
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY pRi<cO
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 4 1t)(+r
PIXELS (256) PeTA$Yl
SPREAD NORMAL Qxa{UQh}9
DISPLAY UyiJU~r1
!! FORM 0.5 % 3o`j<
PICTURE <)U4Xz ?
RETURN
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