| 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？ j#JE4(&
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 }[8Nr+y
yZ57uz
SYSTEM NEW 7P7d[KP<
RESET ] ! :0^|
">NPp\t>/Z
UNITS MM Hp?uYih0
WAVELENGTHS 3.7 UM Y#aHGZ $i
h@"u ==0
COATING PROPERTIES SoJ'y 6
1 0 'REFLECT' ZsepTtY
0 0 'ABSORB' ck\gazo~q
R.B3
PARABASAL 4 Jb"0P`senY
BEAMS COHERENT DIFFRACT fN {JLp
WIDTHS 1.6 !ie'}|c
#Yr/GNN
A=1 O^yD b
N=32 e x`mu E
L=(N)*(A) TWAt)Q"J
D1=0.625E-3 GK-__Y.
D2=(N)*(D1) 3# r ` e
!! 微阶梯镜======================= Uv"O'Z
$DO -16 15 1 E<
Ini'od[
{SURFACE X6lUFko
PLANE Z 0 RECTANGLE (A)/2 (L)/2 Af{K#R8!
OBJECT 'MIRROR2_?' d
,!sZ&v
INTERFACE COATING REFLECT AIR AIR J|GEt@o3
SHIFT X (A)*?+(A)/2 8ECBi(
SHIFT Z (D2)*? !JC!GS"M5
} 64h$sC0z/e
GROUP MIRROR2_? ? v$kq}Rg
SHIFT Z (L) q'~F6$kv5
ROTATE X -90 0 0 qD/X% `>Q
!! DETECTOR====================== ~*,e &I
SURFACE M ~k2Y$}R
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 #X?#v7i",D
OBJECT 'DETECTOR' *dE5y S`H
INTERFACE COATING ABSORB AIR AIR G'qGsKf\
!! SOURCE ======================= 6} 9`z8
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) eLc@w<yB
SOURCE DIR 0 1 0 _pS!sY~d
!! !!TRACE PLOT========================= w~I;4p~(N
!!WINDOW Y Z l9up?opq
!!PLOT FACETS 5 5 !!OVERLAY Q!_@Am"h
TRACE!! PLOT .qjdi`v
!!$VIEW V)g{ Ew]:
yC <[ LH
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY a="\?L5
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 G)'( %rl
PIXELS (256) 4RXF.kJ3=
SPREAD NORMAL 'HdOW[3o
DISPLAY ek3,ss3
!! FORM 0.5 g =)djXW
PICTURE 7w]NG` 7
RETURN
|
|
