| 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？ Y#lAG@$
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 c+{XP&g8_J
w'}s'gGE
SYSTEM NEW 26~rEOgJ
RESET q"Bd-?9
UP-2{zb |?
UNITS MM :C;fEJN
WAVELENGTHS 3.7 UM hak#Iz0[C
5 n 4/}s
COATING PROPERTIES Ty b_'|?rW
1 0 'REFLECT' "^t7]=q
0 0 'ABSORB' gs2qLb
TPb&";4ROf
PARABASAL 4 2;]tIt d1
BEAMS COHERENT DIFFRACT 8;=?F>]xn
WIDTHS 1.6 G%gdI3h1Z
h1>.w
pr
A=1 Uj 3{c
N=32 WL% T nux
L=(N)*(A) _BG `!3U +
D1=0.625E-3 !5+9~/;
D2=(N)*(D1) Nt+ UL/1]
!! 微阶梯镜======================= ~i^,Z&X:
$DO -16 15 1 mp3 Dc
{SURFACE 5YZ\@<|rH
PLANE Z 0 RECTANGLE (A)/2 (L)/2 MS SHMR
OBJECT 'MIRROR2_?' ;$a|4_U$m
INTERFACE COATING REFLECT AIR AIR f`8fNt
SHIFT X (A)*?+(A)/2 dd=5`Bo9Yh
SHIFT Z (D2)*? iv dPF dJ
} ,_,7c or
GROUP MIRROR2_? Z[+Qf3j}o6
SHIFT Z (L) FlS)m `
ROTATE X -90 0 0 E3Z>R=s
!! DETECTOR====================== pfim*\'
SURFACE 'H1 "z !]
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 AO$aW y I
OBJECT 'DETECTOR' [\HAJ A,
INTERFACE COATING ABSORB AIR AIR C~iFFh6:
!! SOURCE ======================= bVRxGn @l
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) <.7W:s,f=
SOURCE DIR 0 1 0 iEFS>kL8e
!! !!TRACE PLOT========================= lSId<v?C>
!!WINDOW Y Z AM gvk`<f
!!PLOT FACETS 5 5 !!OVERLAY '9wD +'c=A
TRACE!! PLOT ]*S _fme
!!$VIEW /|e"0;{
Qe/=(P<
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY nfv s "B;
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 r52,f%nlm
PIXELS (256) $PbN=@
SPREAD NORMAL 4d'tK^X
DISPLAY S4~;bsSx
!! FORM 0.5 ^_Z Qf
PICTURE Vo2frWF$
RETURN
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