| 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？ +B$ o 8V
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 H gMLh*
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SYSTEM NEW ZPWY0&9
RESET ` 1F[.DdF
r5XG$:$8\
UNITS MM agqB# ,i
WAVELENGTHS 3.7 UM ] Cpd`}'
*hVW >{a
COATING PROPERTIES jN:!V t
1 0 'REFLECT' |:SBkM,
0 0 'ABSORB' J PQ[JD^]
<o^_il$W
PARABASAL 4 .%7#o
BEAMS COHERENT DIFFRACT )cn B>Qul
WIDTHS 1.6 woJO0hHR
3A%/H `
A=1 *a* \E
R
N=32 E.]sX_X?
L=(N)*(A) "ZDc$v:Qa
D1=0.625E-3 LuQ4TT
D2=(N)*(D1) TIbq UR
!! 微阶梯镜=======================
RKsr}-1 8
$DO -16 15 1 ]q DhGt
{SURFACE )&}\2NK6L
PLANE Z 0 RECTANGLE (A)/2 (L)/2 h4 x*C=?A
OBJECT 'MIRROR2_?' 60P^aj$V
INTERFACE COATING REFLECT AIR AIR F23/|q{{
SHIFT X (A)*?+(A)/2 GUJ[2/V~A
SHIFT Z (D2)*? ((wG
K|d
} i.I iwe0G
GROUP MIRROR2_? A-e#&pJ
SHIFT Z (L) W8j)2nKD
ROTATE X -90 0 0 DQM\Y{y|3
!! DETECTOR====================== keNPlK% >
SURFACE v drV)^
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 /Fej)WQp
OBJECT 'DETECTOR' 1J<Wth{
INTERFACE COATING ABSORB AIR AIR EotZ$O=
!! SOURCE ======================= m`! C|?hu
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) `An`"$z
SOURCE DIR 0 1 0 i,N U%b e
!! !!TRACE PLOT========================= 1UX"iO x(
!!WINDOW Y Z y6ntGrZ}$
!!PLOT FACETS 5 5 !!OVERLAY [uP_F,Y/
TRACE!! PLOT 2@ vSe
!!$VIEW )tGeQXVhbJ
f^il|Obzl
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY 4*W ??(=j
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 ''S*B|:
PIXELS (256) !_rAAY
SPREAD NORMAL l`8S1~j
DISPLAY rH7|r\] r
!! FORM 0.5 4jefU}e9#
PICTURE %E Jv!u*-
RETURN
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