[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。 Q&9& )8-  
谢谢！ ;:gx;'dm5  
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？ ?rV c}  
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SYSTEM NEW fKT(.VNq5  
RESET fI0L\^b%  
UNITS  UM 'W' 
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WAVELENGTHS 0.5 0.6 0.7 0.8 0.9 1.1 UM on1mu't_;  
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PI=4*ATAN(1) 5(OF~mX#  
COATING PROPERTIES ~LzTqMHM  
  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' ';7|H|,F
 
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  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' ^SRa!8z$W  
  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' z'X_s.9F  
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SMOOTH VVje|T^{Z  
OBJECT f:g<Bz=u)*  
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!! DETECTOR zR3Z(^]v  
SURFACE O"9f^y
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  PLANE Z 0 RECTANGLE (1000/2) (1000/2) 0 0 0 ,K6]Q|U@r  
  OBJECT 'DETECTOR' Y<.F/iaH  
    INTERFACE COATING ABSORB AIR SCHOTT_BK7 L7%'Y}1e.  
    FACETS 4 4 ;h3*MR  
    REDEFINE COLOR 1
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    ROTATE X 90 Q<``}:y|>  
    SHIFT Y -10000 |@-WC.  
!! Verify Geometry #(*WxVE  
WINDOW Y Z I.e'  
PLOT FACETS 7 7 OVERLAY ~K],hi^<P  
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!! Define source 1 |/lIasI  
PARABASAL 4 cuk2\> Xl  
BEAMS COHERENT DIFFRACT )3B5"b,  
WAVELENGTH 0.5 MICRONS y!!+IeReS  
WIDTHS 1.6 Q84KU8?d  
GRID RECT Y 100 -4@500 2@100 A1ebXXD)  
  SOURCE DIRECTION 0 -1 0 $'FPst8Q<  
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  FLUX 0 1 SOU 1 0XYO2k  
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TRACE PLOT COLOR 2 3Ob"r`  
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PIXELS 100 $=m17GD  
CONSIDER  ONLY DETECTOR JN KZ'9  
SPREAD NORMAL kyo ,yD  
WINDOW Z -2@(1500/2) X -2@(1500/2) Z%OSW  
WINDOW 1  !! Enlarge by }Rux<=cd|  
SPREAD NORMAL wD,F=O  
DISPLAY j'J*QK&Q  
  PICTURE MM8)yCI  
RETURN

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UNITS  UM 'W' )nk>*oE  
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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' 4yM8W\je  
  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' *Sf^()5C,  
  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' ]/']{*T1  
  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' g0U ?s  
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EDGE e.GzGX  
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SMOOTH {LeEnh-  
ELLIPSE Y 0 500 500 16 0.0 360.0 ]O\W<'+V  
SMOOTH "%]dC{  
OBJECT X m3t xp#  
.1 .2 'EXTRUDED OBJECT' ^Bb_NcU  
           
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  OBJECT 'DETECTOR' l!=WqIZ  
    INTERFACE COATING ABSORB AIR SCHOTT_BK7 \}=b/FL=U  
    FACETS 4 4 bsry([N>w  
    REDEFINE COLOR 1 ezvaAhd{  
    ROTATE X 90 w3Ohm7N[  
    SHIFT Y -10000 "p{'984r<  
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!! Verify Geometry -DnK)u\@  
WINDOW Y Z @^%_ir(  
PLOT FACETS 7 7 OVERLAY iFA"m;$  
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9F](%/  
!! Define source 1 k I~]u  
PARABASAL 4 kk'w@Sn.(  
BEAMS COHERENT DIFFRACT 0mh8.  
WAVELENGTH 0.5 MICRONS uLM_KZ  
WIDTHS 1.6 RX1{?*r]Z  
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GRID RECT Y 100 -4@500 2@100 }A7qIys$4  
  SOURCE DIRECTION 0 -1 0 A%1=6  
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  FLUX 0 1 SOU 1 a
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TRACE PLOT COLOR 2 *"\Q ~#W  
$VIEW HJR<d&l;p  
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PIXELS 100 #L0I+ K,K\  
CONSIDER  ONLY DETECTOR jPNfLwVkl:  
SPREAD NORMAL ?ljod6  
WINDOW Z -2@(1500/2) X -2@(1500/2) ;x^,t@ xge  
WINDOW 1  !! Enlarge by !nq\x8nU  
SPREAD NORMAL it@}dZ  
y UAn~!s  
DISPLAY ~UC/|t$  
  PICTURE R?~h7 d  
RETURN Q;O)>K  
自己根据例子改的 |S:!+[  
为什么出来的衍射图和MATLAB的不一样的 ;-GzGDc~0  
相差很大 TrU@mYnE  
自己觉得不对 _D9@<+MS*  
请高手指点一下