[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。 wS+j^ ;"  
谢谢！ r\$`e7d}!  
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？ "/
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SYSTEM NEW a'?V:3 ]  
RESET WZcAwYB  
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COATING PROPERTIES EC7)M}H  
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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' vo^2k13  
  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>J%Eu/O  
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BEAMS COHERENT DIFFRACT rAS2qt  
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WIDTHS 1.6 X 1}U  
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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' iy [W:<c7j  
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  0.5  0.5  0.5  0.5  0.5  0.5  0.5  0.5  0.5  0.5  0.5  0.5  'BEAM_SPLITTER' n(j5dN>]  
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BEAMS COHERENT DIFFRACT #>O+!IH
 
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WIDTHS 1.6 U_@Dn[/:  
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GRID RECT Y 100 -4@500 2@100 `tJ"wpCf6  
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SPREAD NORMAL  u'qc=
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DISPLAY YguY5z  
  PICTURE `f\+aD'u  
RETURN TQ25"bWi  
自己根据例子改的 :djbZ><  
为什么出来的衍射图和MATLAB的不一样的 -E-e!  
相差很大 zI.:1(,  
自己觉得不对 0 1:(QJ  
请高手指点一下