| 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？ Q,[G?vbj
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 g}s$s}
au{) 5W4~
SYSTEM NEW '{"Rjv7
RESET $D1ha C L
YI g(^>sq
UNITS MM }T@=I&g;
WAVELENGTHS 3.7 UM I/`"lAFe
U05;qKgkDF
COATING PROPERTIES A`n>9|R
1 0 'REFLECT' 3>KEl^1DB
0 0 'ABSORB' /K#k_k
VHxB s
PARABASAL 4 /W /e%.
BEAMS COHERENT DIFFRACT =]%JTGdp(
WIDTHS 1.6 w}j i]V}
r[S(VPo[()
A=1 CRK%^3g
N=32 1Cw]~jh
L=(N)*(A) e$Ksn_wEq
D1=0.625E-3 4j#y?^s
D2=(N)*(D1) ZwkUd-=0i
!! 微阶梯镜======================= ib=)N)l
$DO -16 15 1 w:t~M[kTW
{SURFACE ye(b 7CX
PLANE Z 0 RECTANGLE (A)/2 (L)/2 +<a\0FsD
OBJECT 'MIRROR2_?' "+(|]q "W
INTERFACE COATING REFLECT AIR AIR 4>d4g\Z0 L
SHIFT X (A)*?+(A)/2 geme_
SHIFT Z (D2)*? F w 0 m(7
} Ymz/:
GROUP MIRROR2_? :W.H#@'(
SHIFT Z (L) <tD,Uu{P
ROTATE X -90 0 0 WC#6(H5t$
!! DETECTOR====================== #EH=tJgO|J
SURFACE YO$Ig:a#
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 aJ'Fn
OBJECT 'DETECTOR' i#'K7X M2
INTERFACE COATING ABSORB AIR AIR L7$ f01*
!! SOURCE ======================= YnEyL2SuU
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) `
,\b_SFg
SOURCE DIR 0 1 0 731Lz*IFg
!! !!TRACE PLOT========================= \Y4(+t=4
!!WINDOW Y Z t7f(%/] H0
!!PLOT FACETS 5 5 !!OVERLAY 0V:H/qu8>
TRACE!! PLOT ]l,D,d81
!!$VIEW ,b*?7R
_%e8GWf
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY !D=!
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 tgF ~5
o}?
PIXELS (256) wW%b~JX
SPREAD NORMAL vNSUrf,r
DISPLAY ,X|Oe@/
!! FORM 0.5 ^B<-.(F
PICTURE GHsDZ(d3.
RETURN
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