| 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]J)dDI
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 mn=b& {')e
JWaWOk(t=?
SYSTEM NEW @;KYvDY
RESET 3bXfR,U
)A%* l9\nG
UNITS MM `R
xCs`
WAVELENGTHS 3.7 UM !s^XWsb8
pZK 1G
COATING PROPERTIES ;du},>T$n
1 0 'REFLECT' X `EVj K
0 0 'ABSORB' j 24D L+
SrB>_0**
PARABASAL 4 K!qOO
BEAMS COHERENT DIFFRACT ]P#W\LZp
WIDTHS 1.6 SPRTJdaC9
>q&5Z
A=1 KAD2_@l
N=32 8m=R"
%h
L=(N)*(A) %FM26^
D1=0.625E-3 u=qaz7E
D2=(N)*(D1) +6l# hO7h
!! 微阶梯镜======================= M ;b3-
i
$DO -16 15 1 ,u^{zYoW
{SURFACE 9G2 rV k
PLANE Z 0 RECTANGLE (A)/2 (L)/2 q2J |koT
OBJECT 'MIRROR2_?' kr~n5WiAZ
INTERFACE COATING REFLECT AIR AIR ;,6C&|n]w
SHIFT X (A)*?+(A)/2 E9>z. vV
SHIFT Z (D2)*? u-y?i`
} ~E((n
GROUP MIRROR2_? [e
zt u9
SHIFT Z (L) X<. l(9$
ROTATE X -90 0 0 ~XP |dn}
!! DETECTOR====================== mjg@c|rTG
SURFACE .tGz, z}
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 S>h\D4.
OBJECT 'DETECTOR' eR>8V8@
INTERFACE COATING ABSORB AIR AIR jSHF Y]2
!! SOURCE ======================= 0;T7fKj
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) %Vltc4QU
SOURCE DIR 0 1 0 <QFayZ$
!! !!TRACE PLOT========================= T?f{.a)
!!WINDOW Y Z Rc{ R^5B
!!PLOT FACETS 5 5 !!OVERLAY 2)}*'_E9
TRACE!! PLOT (0#$%US\
!!$VIEW gJuK% P
_0gdt4
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY d>mZY66P
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 M^8zqAA
PIXELS (256) hKN ;tq,
SPREAD NORMAL ,D*bLXWh
DISPLAY @i V-pJ-
!! FORM 0.5 GRYw_}Aa
PICTURE [pp |*@1T
RETURN
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