| 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？ H`sV\'`!}
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 ?]S* = 6
kq+L63fZ
SYSTEM NEW ynhH5P|6,
RESET P:G^@B3^
CKK8 o9W
UNITS MM K7|BXGL8r8
WAVELENGTHS 3.7 UM @L0.Z1 ).
%Vg R *
COATING PROPERTIES 74_ji!
1 0 'REFLECT' gO29:L[t
0 0 'ABSORB' 9"[#\TW9Vb
"b qB@)
PARABASAL 4 F{v+z8nW
BEAMS COHERENT DIFFRACT M%m$ 5[;n
WIDTHS 1.6 k 2~j:&p
dXZV1e1b&#
A=1 5 Jd,]~KAP
N=32 #-{4F?DA]y
L=(N)*(A) D?$f[+
D1=0.625E-3 c8h
9
D2=(N)*(D1) V<b"jCXI
!! 微阶梯镜======================= 72aj4k]^
$DO -16 15 1 `3~w#?+=*
{SURFACE b?z 8Yp 6
PLANE Z 0 RECTANGLE (A)/2 (L)/2 U.&=b<f(0r
OBJECT 'MIRROR2_?' opKtSF|)
INTERFACE COATING REFLECT AIR AIR uXXwMc<p
SHIFT X (A)*?+(A)/2 (sY?"(~j?T
SHIFT Z (D2)*? 4q2aVm
} BQsy)H`4E
GROUP MIRROR2_? L49`=p<
SHIFT Z (L) h-V5&em"_
ROTATE X -90 0 0 rQU;?[y
!! DETECTOR====================== J^ U#dYd
SURFACE \\_Qv
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 "[76>\'H
OBJECT 'DETECTOR' mhL ,:UE
INTERFACE COATING ABSORB AIR AIR N/(&&\3
!! SOURCE ======================= {$b] K-B
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) { JMFCc[
SOURCE DIR 0 1 0 tR1
kn&w
!! !!TRACE PLOT========================= :WE(1!P@
!!WINDOW Y Z !RV}dhI
!!PLOT FACETS 5 5 !!OVERLAY A >Js`s
TRACE!! PLOT jlItPd C v
!!$VIEW 0EOp K%{
]w({5i
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY OPar"z^EV
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 ~b*f2UVs
PIXELS (256) ~u3E+w
SPREAD NORMAL M '[.ay
DISPLAY ,JX/` 7y
!! FORM 0.5 VB\oK\F5z
PICTURE 72.Z E%Ue
RETURN
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