[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。 k}CVQ@nd  
谢谢！ ,,.QfUj/&  
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？ Q}JOU  
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SYSTEM NEW GVr1`l  
RESET 0o4XUW   
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WAVELENGTHS 0.5 0.6 0.7 0.8 0.9 1.1 UM qq`4<0I>  
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COATING PROPERTIES i"FtcP^  
  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' (m}'4et~L  
  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' r<EY]f^`u  
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  OBJECT 'DETECTOR' r;2^#6/Z  
    INTERFACE COATING ABSORB AIR SCHOTT_BK7 v1JzP#  
    FACETS 4 4  %;'s4ly  
    REDEFINE COLOR 1 0mVNQxHI  
    ROTATE X 90 |Ez>J+uye(  
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!! Verify Geometry }8z?t:|S  
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PARABASAL 4 V!=,0zy~Z  
BEAMS COHERENT DIFFRACT HC8e>kP9b  
WAVELENGTH 0.5 MICRONS {P./==^0  
WIDTHS 1.6 CRE3icXbQ  
GRID RECT Y 100 -4@500 2@100 m0SlOgRsk  
  SOURCE DIRECTION 0 -1 0 59A}}.@?m  
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  PICTURE {wKB;?fUvk  
RETURN

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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' lB4WKn=?Kl  
  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' 3so%gvY.'  
  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' /-s6<e!  
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    INTERFACE COATING ABSORB AIR SCHOTT_BK7 p7~!z.)o  
    FACETS 4 4 q\%I#1  
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BEAMS COHERENT DIFFRACT MOC/KNb  
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WIDTHS 1.6 ?4uL-z](V  
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GRID RECT Y 100 -4@500 2@100 ;a
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WINDOW 1  !! Enlarge by ntY]SK%Z  
SPREAD NORMAL Js;h%  
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DISPLAY /<3UQLMa
 
  PICTURE E.f%H(b  
RETURN KTv$  
自己根据例子改的 54/=G(F  
为什么出来的衍射图和MATLAB的不一样的 YK\X+"lB  
相差很大 o(HbGHIP  
自己觉得不对 Mfs?x a  
请高手指点一下