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N=32;
M=32;
x0=10*1e-3;
y0=10*1e-3;                  %ÏàλÆ÷×Ü´óС
x1=linspace(-x0/2,x0/2,N);
y1=linspace(-y0/2,y0/2,M);
[x1,y1]=meshgrid(x1,y1);

dx=x0/(N-1);
dy=y0/(M-1);
x=ones(size(y1)).*x1;
y=y1.*ones(size(x1));  
fx0=1/dx;
fy0=1/dy;
dfx0=fx0/N;
dfy0=fx0/M;               
fx1=((-N/2):N/2-1)*dfx0;
fy1=((-M/2):M/2-1)'*dfy0;
fx=ones(size(fy1))*fx1;  
fy=fy1*ones(size(fx1));     

lambda0=1053e-9;         %ÖÐÐÄÈëÉ䲨³¤
k=2*pi/lambda0;
w0=6*1e-3;               %¹âÊø³ß´ç¿í¶È
Am=1;
m=2;
z1=0.6;
r=sqrt(x1.^2+y1.^2);
EL=Am.*exp(-((r./w0).*2).^m);  
PL=ones(size(x))*0;     
UL=EL.*(sin(PL)+1i*cos(PL));  
IL=abs(UL).^2;
figure(1);
imshow(IL);
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yishifeiyun

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2Â¥2017-10-16 17:18:17
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tdykxmg

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2Â¥: Originally posted by yishifeiyun at 2017-10-16 17:18:17
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5Â¥2017-10-16 17:48:33
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tdykxmg

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5Â¥: Originally posted by yishifeiyun at 2017-10-16 17:48:33
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phy_yang

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7Â¥2017-10-29 23:45:58
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