| 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？ gu+zfvkcY
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 Qd{8.lB~LQ
`j(._`8%a
SYSTEM NEW bwH[rT!n
RESET Od)y 4nr3~
+vaA
P=
UNITS MM GEA1y^b6"
WAVELENGTHS 3.7 UM D}LM(s3li7
X-(4/T+v
COATING PROPERTIES RB4 +"QUh
1 0 'REFLECT' }ML2-k
0 0 'ABSORB' EK Vcz'w
28 ` s+sH
PARABASAL 4 c!/ +0[
BEAMS COHERENT DIFFRACT v"W*@7<`S
WIDTHS 1.6 f:O bI
@uldD"MJ<]
A=1 *=.~PR6W{
N=32 rM"27ud[`_
L=(N)*(A) 7HBf^N.
D1=0.625E-3 oJ\g0|\qwe
D2=(N)*(D1) _io'8X2K%
!! 微阶梯镜======================= dGn 0-l' q
$DO -16 15 1 k M{8zpn
{SURFACE 7XK0vKmW3
PLANE Z 0 RECTANGLE (A)/2 (L)/2 yV )fJ_
OBJECT 'MIRROR2_?' fg3Jv*
INTERFACE COATING REFLECT AIR AIR t15{>>f4>
SHIFT X (A)*?+(A)/2 UZ2_FP
SHIFT Z (D2)*? 2Y23!hw
} jr? /wt w
GROUP MIRROR2_? X<$Tn60,
SHIFT Z (L) @$ Zh^+x!
ROTATE X -90 0 0 $_E.D>5^%7
!! DETECTOR====================== :sJ7Wok6~
SURFACE nOvR, 6
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 <D ~hhGb
OBJECT 'DETECTOR' A5TSbW']+5
INTERFACE COATING ABSORB AIR AIR ]}XDDPbZ}
!! SOURCE ======================= wW1VOj=6V"
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) $R/@8qnP
W
SOURCE DIR 0 1 0 H3<tsK=:
!! !!TRACE PLOT========================= z3K$gEve
!!WINDOW Y Z kpIn_Ea
!!PLOT FACETS 5 5 !!OVERLAY ?$ e]K/*
TRACE!! PLOT
,"(G
!!$VIEW z R?R,k)m
95z|}16UK
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY _ &h M6 N
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 k`8O/J
PIXELS (256) 'E3T fM
SPREAD NORMAL 6/mz., g2
DISPLAY MmN{f~Kq9
!! FORM 0.5 ;v@ G
PICTURE gGL}FNH
RETURN
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