| 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？ ' qy#)F
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 uvB1VV4
2OalAY6RS
SYSTEM NEW & +r 4
RESET
p5<2N
R2LK.bTVn
UNITS MM l h/&__
WAVELENGTHS 3.7 UM ;fGx;D
n93zD*;5
COATING PROPERTIES XP;x@I#l
1 0 'REFLECT' ]US[5)EL-
0 0 'ABSORB' !Iq{ 5:
BXhWTGiG
PARABASAL 4 U8O( ;+
BEAMS COHERENT DIFFRACT A}G|Yfn
WIDTHS 1.6 =nVmthGw
>&Fa(o;*
A=1 5 =Z!hQ}
N=32 )i!^]| $
L=(N)*(A) Jps .;yjk
D1=0.625E-3 =!,Gst_
D2=(N)*(D1) jO)&KEh
!! 微阶梯镜======================= [xdj6 W
$DO -16 15 1 iZ; TYcT
{SURFACE %EI<@Ps8c
PLANE Z 0 RECTANGLE (A)/2 (L)/2 C5n?0I9
OBJECT 'MIRROR2_?' d
4O
INTERFACE COATING REFLECT AIR AIR 2P5_zND
SHIFT X (A)*?+(A)/2 |F!F{d^p
SHIFT Z (D2)*? ,
Oli
} Z$;"8XUM
GROUP MIRROR2_? /F~X,lm* ~
SHIFT Z (L) a$}mWPp+f
ROTATE X -90 0 0 !T 'X
' Q
!! DETECTOR====================== wUp)JI
SURFACE k
dU!
kj
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 *gu8-7'
OBJECT 'DETECTOR' O9]\Q@M.
INTERFACE COATING ABSORB AIR AIR (@&I_>2Q
!! SOURCE ======================= x /
XkD]Hq
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) nNn56&N]
SOURCE DIR 0 1 0 e.;M.8N#SQ
!! !!TRACE PLOT========================= t(?<#KUB-
!!WINDOW Y Z `ROEV~
!!PLOT FACETS 5 5 !!OVERLAY N z~" vi(t
TRACE!! PLOT F2>%KuM
!!$VIEW {}\CL#~y
0kLEBoOh
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY <_:zI r,
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 |}S1o0v{(a
PIXELS (256) 8wIK:
SPREAD NORMAL 1d v=xe.
DISPLAY h<3p8eB
!! FORM 0.5 $qm~c[x%
PICTURE } uQ${]&D
RETURN
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