[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。 #VM+.75o1  
谢谢！ zR@4Z>6   
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？  }?eO.l{  
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SYSTEM NEW >X@4wP7l  
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COATING PROPERTIES \wjT|z
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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' :)9CG!2y<M  
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    INTERFACE COATING ABSORB AIR SCHOTT_BK7 V3S"LJ  
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    REDEFINE COLOR 1 7_9^nDU  
    ROTATE X 90 qdPmTaak  
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PARABASAL 4 ]\1H=g%Ou  
BEAMS COHERENT DIFFRACT YB+My~fw{l  
WAVELENGTH 0.5 MICRONS *ZkOZ  
WIDTHS 1.6 6vfut$)[{  
GRID RECT Y 100 -4@500 2@100 /B 53Z[yL  
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SPREAD NORMAL TVZf@U  
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SPREAD NORMAL v=_Ds<6n  
DISPLAY "sSY[6Kp!  
  PICTURE j.yh>"de  
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' h^YUu`P  
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CONSIDER  ONLY DETECTOR RPkOtRKL=w  
SPREAD NORMAL f|,2u5 ;z  
WINDOW Z -2@(1500/2) X -2@(1500/2) f.RwV+lq  
WINDOW 1  !! Enlarge by scZ'/(b-E  
SPREAD NORMAL !/Wv\qm  
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DISPLAY {/XU[rn  
  PICTURE %sS7o3RW\  
RETURN % %QAC4  
自己根据例子改的 HqA3.<=F,  
为什么出来的衍射图和MATLAB的不一样的 wQU-r|  
相差很大 u2 U4MV1C  
自己觉得不对 }9?fb[]  
请高手指点一下