| 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？ 9\.0v{&v
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 -Rw3[4>@O"
G~5pMyO R
SYSTEM NEW <ZSXOh,'
RESET .h meP
MK
'UsR/h5T
UNITS MM yo#r^iA r
WAVELENGTHS 3.7 UM 5Qq/nUR
Nb$0pc1J<
COATING PROPERTIES ,RR{Y-
1 0 'REFLECT' HZAT_
0 0 'ABSORB' u*@R`,Y
h,Hr0^?
PARABASAL 4 `;}`>! 8j
BEAMS COHERENT DIFFRACT 3tf_\E+mIi
WIDTHS 1.6 u9@B&
cIw X sx
A=1 sR9$=91`
N=32 CBd%}il
L=(N)*(A) &b#d4p6&l
D1=0.625E-3 } 9\_s*
D2=(N)*(D1) W$`v^1M2o
!! 微阶梯镜======================= /= ;,lC
$DO -16 15 1 F[}#7}xjA
{SURFACE 90 }vFoy
PLANE Z 0 RECTANGLE (A)/2 (L)/2 9$$ Ijf
OBJECT 'MIRROR2_?' :o^ioX.J
INTERFACE COATING REFLECT AIR AIR [nxYfER7
SHIFT X (A)*?+(A)/2 & pzL}/u
SHIFT Z (D2)*? GPHb-
} >`0 3EsU
GROUP MIRROR2_? t[q2 W"#.
SHIFT Z (L) V|
Fo@
ROTATE X -90 0 0 (@} ^ 3jpT
!! DETECTOR====================== l!:bNMd
SURFACE h/tCve3Z
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 d=bK NA90
OBJECT 'DETECTOR' PFp!T [)
INTERFACE COATING ABSORB AIR AIR T@ESMPeU:X
!! SOURCE ======================= p?$N[-W 6-
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) F8?,}5j
SOURCE DIR 0 1 0 = Lkn
!! !!TRACE PLOT========================= (m2%7f.I
!!WINDOW Y Z g5|&6+t.
!!PLOT FACETS 5 5 !!OVERLAY lx2#C9L_
TRACE!! PLOT u;9iuc` *
!!$VIEW PJZ ;wqTD_
&qWg$_ Yh
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY I?D=Q $s
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 a&G{3#l
PIXELS (256) A~Sc ] M
SPREAD NORMAL "&SE!3*m`I
DISPLAY Q(<A Yu
!! FORM 0.5 |I1,9ex
PICTURE KOe]JDU
RETURN
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