[求助]请帮忙写个圆孔衍射的程序 [复制链接]

偶是新手，不明白里面的衍射是怎么弄的，请各位大侠帮忙写个圆孔衍射的程序看看行吗？在DETECTOR显示出衍射图样来？希望把程序命令帖出来。 ~iH a^i?2*  
谢谢！ 0q"4\#4l  
自己根据例子改了一个，但是发现出来的图像和matlab的不一样，相差很大，觉得应该是错了，请大家帮忙看看呗？ qP#LJPaS  
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SYSTEM NEW %"mI["{  
RESET JHa1lj  
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WAVELENGTHS 0.5 0.6 0.7 0.8 0.9 1.1 UM  YFm%W@  
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PI=4*ATAN(1) k37?NoT  
COATING PROPERTIES _D{A`z  
  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  'ABSORB' U,i_}O3Q  
  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0   'TRANSMIT' @`L;_S+  
  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0   'REFLECT' [E a{);  
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!! DETECTOR m*_X PY  
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    INTERFACE COATING ABSORB AIR SCHOTT_BK7 Uyb0iQ-,s  
    FACETS 4 4 d|RUxNjM-J  
    REDEFINE COLOR 1 SDC|>e9i  
    ROTATE X 90 ;9z|rWsF  
    SHIFT Y -10000 <Tgy$Hm  
!! Verify Geometry J "I,]
  
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!! Define source 1 n%F _3`  
PARABASAL 4 sF!#*Y  
BEAMS COHERENT DIFFRACT BQPmo1B  
WAVELENGTH 0.5 MICRONS uluAqDz`  
WIDTHS 1.6 ]4H)GWHKg  
GRID RECT Y 100 -4@500 2@100 `qhT  
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WINDOW Z -2@(1500/2) X -2@(1500/2) qa^cJ1@  
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RETURN

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  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0  'ABSORB' 7T[$BrO\  
  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0   'TRANSMIT' d\>XfS  
  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0  1.0  0.0   'REFLECT' R-m5(  
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BEAMS COHERENT DIFFRACT TXM/+
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WIDTHS 1.6 <b"^\]
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PIXELS 100 xkFa  
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SPREAD NORMAL 07>m*1G  
WINDOW Z -2@(1500/2) X -2@(1500/2) +mBS&FK  
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SPREAD NORMAL |e!Y C iU  
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DISPLAY _YlyS )#@  
  PICTURE afHRy:<+%  
RETURN G?v<-=I  
自己根据例子改的 nW
]CA~  
为什么出来的衍射图和MATLAB的不一样的 6, j60`f)  
相差很大 7l-MVn_8  
自己觉得不对 "Ai\NC  
请高手指点一下