| 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？ +I$,Y~&`>
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 <l.l6okp
-91*VBrOd
SYSTEM NEW ) /y7Fh
RESET Mjon++>Z
AL;z's(F?
UNITS MM ^ 5D %)@~
WAVELENGTHS 3.7 UM sc0.!6^'V
\2c 3Ns ra
COATING PROPERTIES p=jpk@RX
1 0 'REFLECT' 3n!f'" T
0 0 'ABSORB'
=]
+owl2
Ct<]('Hm(
PARABASAL 4 8)o%0#;0B
BEAMS COHERENT DIFFRACT CiNOGSlDj
WIDTHS 1.6
F%tV^$%
Dx5X6 t9=
A=1 tgVMgu
N=32 LsI8T
uv
L=(N)*(A) GiK4LJ~cH)
D1=0.625E-3 Q;xJ/4 Z"
D2=(N)*(D1) {44#<A<
!! 微阶梯镜======================= ib\_MNIb
$DO -16 15 1 z @21Z`,
{SURFACE c<a)Yqf"]
PLANE Z 0 RECTANGLE (A)/2 (L)/2 PNs*+/-S
OBJECT 'MIRROR2_?' YctWSfh
INTERFACE COATING REFLECT AIR AIR XkhGU?={
SHIFT X (A)*?+(A)/2 Ab
In\,x
SHIFT Z (D2)*? ,gdud[&|;
} :OFs" bC
GROUP MIRROR2_? :Dj0W8V
SHIFT Z (L) &e6 !/y&
ROTATE X -90 0 0 ~Jh1$O,9o
!! DETECTOR====================== } 3} H}
SURFACE dLfB){>S
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 Fy$f`w_H@
OBJECT 'DETECTOR' |E9'ii&?B
INTERFACE COATING ABSORB AIR AIR &<LBz|
!! SOURCE ======================= l8 6gs6>
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) {[)n<.n[g
SOURCE DIR 0 1 0 dSI <s^n
!! !!TRACE PLOT========================= ;O7Vl5R
!!WINDOW Y Z >/4N :=.h
!!PLOT FACETS 5 5 !!OVERLAY v{X<6^g
TRACE!! PLOT !T# EkMM
!!$VIEW = inp>L
82M` sk3.
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY Y:R*AOx
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 4l`[,BJ
PIXELS (256) j VPX]8
SPREAD NORMAL EO`eg]
DISPLAY b]gVZ-
!! FORM 0.5 [jv+Of
IZ
PICTURE O.DO,]Uh
RETURN
|
|
