[分享]利用MATLAB光学仿真（2） [复制链接]

计算光波由光密入射到光疏介质时相位变化 h~Ir=JV  
#v(As)4^  
clear `mcb0  
}m<+tn3m  
close all <p<6!tdO  
lai@,_<GV  
n1=1.45,n2=1; U)'YR$2<
 
uB+#<F/c  
theta=0:0.1:90; ^JxVs 7  
fP<==DK  
a=theta*pi/180; RK@K>)"f  
P>q
~ocq<  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); pImq<Z  
r4u,I<ZbH  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); ?MywA'N@x  
^N7cXK*  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); r } Wdj  
GdC=>\]  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); F lVG,Z  
;LgMi5dN  
arp=angle(rp); JQ ?8yl  
V #vkj  
ars=angle(rs); J,v024TM  
v3[ZPc;;  
atp=angle(tp); 4%}iKoT   
?4%#myO3a  
ats=angle(ts); 5n>zJ ~  
YP!}Bf  
figure(1) _H U>T  
lrPIXIM  
subplot(1,2,1); !gyW15z'  
}cUO+)!Y  
plot(theta,arp,'-',theta,ars,'--','LineWidth',2) @
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@=g{4(zR^  
legend('arg(r_p)','arg(r_s)') yz3=#  
7&etnQJ{  
xlabel('\theta_i') V,zFHX
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}x6)}sz7  
ylabel('\phi') xGOmvn^lQ  
DQ$m@_/4w  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ~2[kCuu  
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.Z  
axis([0 90 -3.5 3.5]) \Dr( /n  
B{`K?e0  
grid on
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B!x6N"  
subplot(1,2,2); wtL=^  
owa&HW/_  
plot(theta,atp,'-',theta,ats,'--','LineWidth',2) g9Dynm5  
1e9~):C~W  
legend('arg(t_p)','arg(t_s)') (3K,f4S@  
~mHrgxQ-  
xlabel('\theta_i') q(46v`u  
wk?i\vm  
ylabel('\phi') |d\1xTBLp  
A]%*ye"NT  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) `)8SIx  
s{c|J#s  
axis([0 90 -3.5 3.5]) iig4JP'h  
]w*`
}  
grid on oG hMO  
-jNnx*  

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