[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。 ]Q1
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谢谢！ 4>eY/~odq]  
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？ $*w]]b$Dn  
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SYSTEM NEW 11t+ a,fM  
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    REDEFINE COLOR 1 ^w]N#%k\H  
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BEAMS COHERENT DIFFRACT c%|K x  
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WIDTHS 1.6 ^3~+|A98M  
GRID RECT Y 100 -4@500 2@100 8{DZew /  
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WIDTHS 1.6 ZLGglT'EW>  
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WINDOW Z -2@(1500/2) X -2@(1500/2) T!jMh-8  
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SPREAD NORMAL 5-RA<d#  
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  PICTURE OQJ#>*?  
RETURN nZX`y -AZ  
自己根据例子改的 b{Bef*`/  
为什么出来的衍射图和MATLAB的不一样的 4M)oA|1w  
相差很大 xFzaVjjP  
自己觉得不对 20 Z/Y\  
请高手指点一下