| 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？ 8n_!WDD
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 LU'<EXUbY
~cC =De X
SYSTEM NEW B 4fMD]
RESET W@"s~I6
+hoZW R
UNITS MM *2nQZ^c.
WAVELENGTHS 3.7 UM q 6R``
,0j7qn@tm
COATING PROPERTIES _c[Bj ip
1 0 'REFLECT' g" c |%3
0 0 'ABSORB' +MHsdeGU1W
Nu}x`Q kmr
PARABASAL 4 ,#
i@jB
BEAMS COHERENT DIFFRACT a| w. G "W
WIDTHS 1.6 j%_{tB
Tf0"9
A=1 >"Tivc5
N=32 _SVIY@K|/
L=(N)*(A) HhZ lHL
D1=0.625E-3 GPyr;FV!s
D2=(N)*(D1) "#<P- -E 9
!! 微阶梯镜======================= q oA ?
$DO -16 15 1 aXOW +$,
{SURFACE '+ %<\.$
PLANE Z 0 RECTANGLE (A)/2 (L)/2 i!AFXVX
OBJECT 'MIRROR2_?' Dm^Bk?#(
INTERFACE COATING REFLECT AIR AIR h\]D:S
SHIFT X (A)*?+(A)/2 fv;3cxQp
SHIFT Z (D2)*? l*l?aI
} )\xDo<@
GROUP MIRROR2_? ( L{>la!
SHIFT Z (L) VaV(+X
ROTATE X -90 0 0 -MA/:EB
!! DETECTOR====================== oR``Jiob|
SURFACE oSAO0h>0N
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 Y.7 iKMp(
OBJECT 'DETECTOR' '3<AzR2
INTERFACE COATING ABSORB AIR AIR &>jSuvVT
!! SOURCE ======================= ( vO \h8
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256)
4y: pj7h
SOURCE DIR 0 1 0 T6Oah:50EM
!! !!TRACE PLOT========================= ^0x0 r Y
!!WINDOW Y Z NZ{)&ObBRt
!!PLOT FACETS 5 5 !!OVERLAY V?yTJJ21X
TRACE!! PLOT &1Zq C;
!!$VIEW 7{"urs7 T
By&ibN),
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY #0:N$'SZ
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 V"A*k^}
PIXELS (256) CC,f*I
SPREAD NORMAL f+WN=-F\
DISPLAY G C#s;X
!! FORM 0.5 Exu5|0AAE
PICTURE 2:8p>^g=
RETURN
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