| 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？ mNPz%B
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 I~&*8)xM
0/JTbf. CX
SYSTEM NEW KN:V:8:J
RESET wqF_hs(O
, D}
UNITS MM D9r4oRkP*
WAVELENGTHS 3.7 UM
<y<
jJK@i\bU_
COATING PROPERTIES %g7B*AX]
1 0 'REFLECT' z]R% A:6K
0 0 'ABSORB' 1$nuh@-ys
+<^c2diX
PARABASAL 4 +-PFISa<r
BEAMS COHERENT DIFFRACT 4<S=KFT_
WIDTHS 1.6 ,H@ x.
}UWi[UgA
A=1 blmY=/]
N=32 /MbWS(RT
L=(N)*(A) vPET'Bf(YV
D1=0.625E-3 ;edt["Eu
D2=(N)*(D1) L YMb)=u]
!! 微阶梯镜======================= [g@ .dr3t
$DO -16 15 1 t|v_[Za }Z
{SURFACE ?1]h5Uh[b
PLANE Z 0 RECTANGLE (A)/2 (L)/2 tWI %P&b
OBJECT 'MIRROR2_?' n=%D}W
INTERFACE COATING REFLECT AIR AIR i,mo0CSa
SHIFT X (A)*?+(A)/2 im@c||
SHIFT Z (D2)*? >]/aG!
} t}2M8ue(&
GROUP MIRROR2_? Ht7v+lY90^
SHIFT Z (L) (2'q~Z+>'
ROTATE X -90 0 0 F>"B7:P1:Q
!! DETECTOR====================== r^ +n06[
SURFACE f=Kt [|%'e
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 43/!pW
OBJECT 'DETECTOR' DX<xkS[P
INTERFACE COATING ABSORB AIR AIR S !R:a>\
!! SOURCE ======================= Rqun} v}
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) B 0 ZLGB
SOURCE DIR 0 1 0 ;f~z_3g
!! !!TRACE PLOT========================= z F_aJ+i:~
!!WINDOW Y Z r=ht:+m
!!PLOT FACETS 5 5 !!OVERLAY (lLCAmK 5?
TRACE!! PLOT "/zDcZbL;
!!$VIEW 4 moVS1
c\N-B,m&
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY OIrr'uNH
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 Ov| Uux
PIXELS (256) q Q c-;|8
SPREAD NORMAL ~.TKzh'eB
DISPLAY m*\ XH
DB
!! FORM 0.5 TuMD+^x
PICTURE j(`V& S
RETURN
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