| 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？ wfgqgPo!v
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 dj'm, k
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#j;Tb2&w
SYSTEM NEW N]NF\7(
RESET w OI^Q~
xwRhs!`t1
UNITS MM s~*}0-lS
WAVELENGTHS 3.7 UM 0 ZMJ(C
j 5Qo*p
COATING PROPERTIES Ck\7F?S
1 0 'REFLECT' r-} -C!
0 0 'ABSORB' !b8uLjd;
qve
./
PARABASAL 4 _AFQ >j
BEAMS COHERENT DIFFRACT V YZU eh
WIDTHS 1.6 9 mlIbEAb
$9 + YNgW>
A=1 ~C-,G"zw&G
N=32 6i .gyD
L=(N)*(A) ,apNwkY
D1=0.625E-3 FmEc`N9\v
D2=(N)*(D1) * z'8j
!! 微阶梯镜======================= %SrM|&[
$DO -16 15 1 "13 "`!m
{SURFACE (D<(6?
PLANE Z 0 RECTANGLE (A)/2 (L)/2 ; }qhc l+
OBJECT 'MIRROR2_?' G O{ . 9_2
INTERFACE COATING REFLECT AIR AIR :_ROJ
SHIFT X (A)*?+(A)/2 )KE [!ofD
SHIFT Z (D2)*? Wy4$*$
} K=d R%c(
GROUP MIRROR2_? M*sR3SZ
SHIFT Z (L) <[Q3rJ
ROTATE X -90 0 0 W3r ?7!~
!! DETECTOR====================== (-0ePSOG
SURFACE Yw'NX5#)g
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 G,f-.
OBJECT 'DETECTOR' %dMqpY7 "
INTERFACE COATING ABSORB AIR AIR k1^\|
!! SOURCE ======================= +-<}+8G;
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) |F[=b'?
SOURCE DIR 0 1 0 1TS0X:TCn
!! !!TRACE PLOT========================= MP^ d}FL
!!WINDOW Y Z R\mR $\cS
!!PLOT FACETS 5 5 !!OVERLAY IvHh4DU3Z
TRACE!! PLOT s&a1y~r v
!!$VIEW sa1h%<
vAb^]d
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY 7j$Pt8$
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 %zBCq"y
PIXELS (256) < IJu7t>
SPREAD NORMAL : i~W
} r
DISPLAY {2&m`D bm
!! FORM 0.5 yNg9 X (U
PICTURE # 3$\Iu
RETURN
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