| 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？ XZIj' a0d
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 gQ,PG
WAkKbqJV
SYSTEM NEW :;)K>g,b
RESET f>l}y->-Ug
.* V ZY
UNITS MM & 7JCPw
WAVELENGTHS 3.7 UM 4}fG{Bk
CbI[K|
COATING PROPERTIES dM#\h*:=
1 0 'REFLECT' ]?b #~
0 0 'ABSORB' Dgp"RUP
W}a&L
PARABASAL 4 >k
kuw?O@
BEAMS COHERENT DIFFRACT ]NG`MZ
WIDTHS 1.6 ),dXa P[
Fa g%#jxI
A=1 o;_v'
N=32 5A:b
\
L=(N)*(A) 8]' qJ;E2
D1=0.625E-3 A;q}SO%b
D2=(N)*(D1) GC#3{71
!! 微阶梯镜======================= B a6''?;G
$DO -16 15 1 ?uOdq MJV
{SURFACE ^'6!)y#
PLANE Z 0 RECTANGLE (A)/2 (L)/2 I tp 7X
OBJECT 'MIRROR2_?' [p[Kpunr{l
INTERFACE COATING REFLECT AIR AIR lUUeM\
SHIFT X (A)*?+(A)/2 b2r@vZ]D
SHIFT Z (D2)*? :hCp@{
} cZ%weQa#N)
GROUP MIRROR2_? W@JmG`Sy
SHIFT Z (L) iK = {pd
ROTATE X -90 0 0 W?5^cEF
!! DETECTOR====================== ;r"YZs&Xd
SURFACE yA
\C3r'
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 Y PFjAQ
OBJECT 'DETECTOR' !imm17XQ\
INTERFACE COATING ABSORB AIR AIR yzgDdAM
!! SOURCE ======================= '@ (WT~g
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) YeptYW@xfw
SOURCE DIR 0 1 0 i|)<#Ywl
!! !!TRACE PLOT========================= rpQB#
Pz
!!WINDOW Y Z '8}*erAg
!!PLOT FACETS 5 5 !!OVERLAY 9JJ(KY
TRACE!! PLOT Jf YO|,
!!$VIEW -*M/,O
^<.mUaP
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY tTX2>8Gmr
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 oV&AJ=|\
PIXELS (256) BD\xUjd?)Q
SPREAD NORMAL {^1D|y
DISPLAY G= !Gy .
!! FORM 0.5 #Bj.# 5
PICTURE "z1\I\
^
RETURN
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