[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。
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谢谢！ Qt+|s&HGt  
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？  Vf:w.G A  
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SYSTEM NEW ~7Ji+AJA  
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COATING PROPERTIES t;P%&:"@M  
  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' GA19=gow  
  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' 5):2;hk  
  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' % K$om|]p  
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!! DETECTOR >|<8QomD  
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  OBJECT 'DETECTOR' EjsAV F [@  
    INTERFACE COATING ABSORB AIR SCHOTT_BK7 b6Jv|1w'  
    FACETS 4 4 5#~ARk*?a  
    REDEFINE COLOR 1 5t6!K?}  
    ROTATE X 90 0 S3~IeJ  
    SHIFT Y -10000 {I s?>m4  
!! Verify Geometry >G`=8Ku  
WINDOW Y Z 6d~[My  
PLOT FACETS 7 7 OVERLAY
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PARABASAL 4 ZN)a}\]  
BEAMS COHERENT DIFFRACT *uYnu|UQH  
WAVELENGTH 0.5 MICRONS .
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WIDTHS 1.6 ?#@
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GRID RECT Y 100 -4@500 2@100 8fpaY{]  
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TRACE PLOT COLOR 2 ZoJ:4uo N`  
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  PICTURE zuOx@T^  
RETURN

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COATING PROPERTIES x#"|Z&Dw0  
  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' yn<z!z%mz  
  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' ug!DL=ZW  
  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|Hk,c9  
  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' 6~\z]LZ  
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EDGE wL,b.]  
RECTANGLE Y 0 10000 10000 16 0.0 360.0
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!! DETECTOR Ltpd:c  
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  PLANE Z 0 RECTANGLE (1000/2) (1000/2) 0 0 0 _)Uw-vhQiT  
  OBJECT 'DETECTOR' BM{GSX  
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    FACETS 4 4 qWe1`.o  
    REDEFINE COLOR 1 J) v~  
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PARABASAL 4 [.B)W);  
BEAMS COHERENT DIFFRACT CFqoD l  
WAVELENGTH 0.5 MICRONS vTjgW?9  
WIDTHS 1.6 (r`+q[  
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GRID RECT Y 100 -4@500 2@100 B{!)GZ(}  
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PIXELS 100 )H$
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WINDOW Z -2@(1500/2) X -2@(1500/2) )gV+BHK  
WINDOW 1  !! Enlarge by lDV8<  
SPREAD NORMAL `|wH=  
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DISPLAY JU:!lyd  
  PICTURE zB\g'F/  
RETURN KgVit+4u/  
自己根据例子改的 ]>/YU*\  
为什么出来的衍射图和MATLAB的不一样的 7CUu:6%  
相差很大 &T]+g8''  
自己觉得不对 !
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请高手指点一下