[分享]利用MATLAB光学仿真（1） [复制链接]

利用菲涅尔公式计算光波在两种介质表面折反射率及折反射能流密度 ]9x30UXLwD  
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1、光疏射向光密 !AMPA*  
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clear (d~'H{q  
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close all GN{.R7  

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n1=1,n2=1.45; +6TKk~0e^  
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theta=0:0.1:90; _PRm4 :  
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a=theta*pi/180; QP qa\87  
T&{EqsI=B  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 9:esj{X  
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rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); ZBnf?fU  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); dFS+O;zE\  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); w.V8-9{  
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figure(1) vUCU%>F  
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subplot(1,2,1); 5^5h%~)}  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 5&VLq  
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legend('r_p','r_s','|r_p|','|r_s|') Cx@,J\rsQ  
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xlabel('\theta_i') 0ogTQ`2Z:  
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ylabel('Amplitude') ,iHl;3bu  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) h?idRaN_  
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axis([0 90 -1 1]) }5%!:=  
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grid on #kxg|G[Ol  
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subplot(1,2,2); Ddu$49{S:  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 9BF#R<}h  
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legend('t_p','t_s','|t_p|','|t_s|') _El=M0  
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xlabel('\theta_i') d_OHQpfK  
hd '!f  
ylabel('Amplitude') ;[*7UE+#7  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) -\r*D#aHBN  
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axis([0 90 0 1]) J%%nv5y  
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grid on :vm*miOF  
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Rp=abs(rp).^2; G<>`O;i  
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Rs=abs(rs).^2; [P"#?7 N  
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Rn=(Rp+Rs)/2; j'v2m
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Tp=1-Rp; rs<UWk<q  
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Ts=1-Rs; r`mfLA]d  
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Tn=(Tp+Ts)/2; ;ML21OjgN  
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figure(2) K /. ;N.9  
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subplot(1,2,1); V
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) R5|c4v{B  
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legend('R_p','R_s','R_n') 0f1*#8-6  
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xlabel('\theta_i') ECQ>VeP  
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ylabel('Amplitude') sJMT _yt;  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) eSJ5YeY)  
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axis([0 90 0 1]) ^!?W!k!:V  
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grid on He~)i)co  
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subplot(1,2,2); /+iU1m'(  
A]QgX5\sa  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) \za 0?b  
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legend('T_p','T_s','T_n') 6-j><'  
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xlabel('\theta_i') ):kDWc  
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ylabel('Amplitude') wtIXZUx  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) E&#cU}ErN  
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axis([0 90 0 1]) `[X5mEe  
R:fERj<s  
grid on /X9Kg  
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2、光密射向光疏 KP,#x$Bg  
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clear :qy< G!o  
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close all /Ps/m!  
lC|`DG-B  
n1=1.45,n2=1; "tdF#>x  
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theta=0:0.1:90; AWo\u!j  
~XU%_Hz  
a=theta*pi/180; L6<.>\^Z"  
8~* |muN.e  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); "Tt5cqUQoY  
57@6O-t-  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); s3<gq x-&r  
GO4IAUA  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); lrQNl^K}=  
lZ gX{  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); )seeB
m-`  
@-zL"%%dw'  
figure(1) FWC\(f  
]WFr5  
subplot(1,2,1); 'rl?'~={p  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) uE E;~`G  
94.|l  
legend('r_p','r_s','|r_p|','|r_s|') 'wyS9^F  
o{]2W `0r  
xlabel('\theta_i') (sDZ&R  
T"IDCT'z  
ylabel('Amplitude') 8SGqDaRt  
Z; 6N7U  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) "zE>+zRl  
ly9tI-E  
axis([0 90 -1.5 1.5]) `@3{}  
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grid on 6K7DZ96L  
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subplot(1,2,2); 7H])
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) dp}s]`x+  
DMdVE P"m  
legend('t_p','t_s','|t_p|','|t_s|') k^@dDLr"  
mE"(d*fe'  
xlabel('\theta_i') #=uV, dw  
"UYlC0 S\  
ylabel('Amplitude') dD351!-  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) i"`N5  
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axis([0 90 -0.5 3]) _s18^7  
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grid on ~e<^jhpJ
 
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Rp=abs(rp).^2; %w#z  
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Rs=abs(rs).^2; +v+Dkyf:V  
Ak kth*p  
Rn=(Rp+Rs)/2; {%Rntb  
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Tp=1-Rp; l@:&0id4I  
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Ts=1-Rs; |mQC-=6t;Y  
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Tn=(Tp+Ts)/2; L[voouaqm  
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figure(2) :sX4hZK=G  
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subplot(1,2,1); zI= 9  
Q_6v3no1  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) %RX!Pi}5+g  

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legend('R_p','R_s','R_n') T@xaa\bzg  
$sFqMy  
xlabel('\theta_i') nxJx8d"  
(qw;-A W8  
ylabel('Amplitude') Gvl,M\c9-  
R8>17w.  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) l0PXU)>C  
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axis([0 90 0 1]) ]E|E4K6g  
$\#wsI(  
grid on ,f~)CXNT?  
hAJ^(|  
subplot(1,2,2); A;TNR  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 5Mp$u756  
TB_OFbI2  
legend('T_p','T_s','T_n') )TcD-Jr  
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xlabel('\theta_i') ~zoZ{YqP  
&8dj*!4H  
ylabel('Amplitude') qFp]jbU  
734H{,~  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) QsPZ dC  
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axis([0 90 0 1]) *-3*51 jW  
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grid on $\aJ.N6
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感谢楼主分享

这个在《MATLAB在光学中的应用》这本书里都有

谢谢了楼主分享

thanks

谢谢了楼主分享

学习学习

学习学习 &GH,is  

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