[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。 5I;&mW`1,`  
谢谢！ N% B>M7-=  
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？ Es`Px_k  
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SYSTEM NEW G>=*yqo  
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COATING PROPERTIES (m}'4et~L  
  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' t3ZOco@~P  
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EDGE CxmKz78  
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!! DETECTOR e>OoyDZ@R  
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  OBJECT 'DETECTOR' YP<ms  
    INTERFACE COATING ABSORB AIR SCHOTT_BK7 ^DLfY-F+j  
    FACETS 4 4 |-ALklXr  
    REDEFINE COLOR 1 e%M;?0j  
    ROTATE X 90 2tO,dx  
    SHIFT Y -10000 R29~~IOqO  
!! Verify Geometry yPp9\[+^j  
WINDOW Y Z d-ko ^Y0  
PLOT FACETS 7 7 OVERLAY 1GRCV8"Z^  
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!! Define source 1 1I6px$^E\  
PARABASAL 4 .Efk
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SPREAD NORMAL B9 uoVcW  
DISPLAY J@'wf8Ub  
  PICTURE ITBE|b  
RETURN

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  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' SJ,v?=S
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    FACETS 4 4 ?J0y|  
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    SHIFT Y -10000 L4W5EO$  
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PARABASAL 4 YmG("z  
BEAMS COHERENT DIFFRACT tH4B:Bgj!  
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WIDTHS 1.6 }@)[5N#A|  
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SPREAD NORMAL rJB}qYD  
WINDOW Z -2@(1500/2) X -2@(1500/2) /dHF6yW  
WINDOW 1  !! Enlarge by yhJ@(tu.Gd  
SPREAD NORMAL ar,7S&sH  
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DISPLAY +ZV5o&V>  
  PICTURE J}t%p(mb  
RETURN ]M3yLYK/P  
自己根据例子改的 vDvFL<`vmD  
为什么出来的衍射图和MATLAB的不一样的 '+ ?X  
相差很大 V]^$S"Tv  
自己觉得不对 2an f$^[  
请高手指点一下