[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 c`-YIz)W  
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1、光疏射向光密 /r-8T>m  
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clear !\aV0,  
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close all wOjv[@d  
!loO%3_)  
n1=1,n2=1.45; e:qo_eSC^-  
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theta=0:0.1:90; y0;,dv]  
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a=theta*pi/180; aJI>FTdK  
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rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); ;JYoW{2  
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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)); Wt(Kd5k0'2  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); ^ b@!dS  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); s){Q&E~X  
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figure(1) n9DbiL1{  
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subplot(1,2,1); 3a%xn4P  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) oK)[p!D?0{  
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legend('r_p','r_s','|r_p|','|r_s|') N.jA 8X  
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xlabel('\theta_i') z=B< `}@3  
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ylabel('Amplitude') +1x)z~q=  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) F%}7cm2  
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axis([0 90 -1 1]) N^lAG"Jao[  
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grid on _1P`]+K\D$  
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subplot(1,2,2); !\ZcOk2  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 9T$u+GX'  
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legend('t_p','t_s','|t_p|','|t_s|') rfX=*mjt  
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xlabel('\theta_i') X>}@EH
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ylabel('Amplitude') q4+Yv2e <r  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) :b5XKv^  
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axis([0 90 0 1]) 3
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grid on 2qlIy  
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Rp=abs(rp).^2; W1hX?!xp!  
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Rs=abs(rs).^2; #v+;:  
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Rn=(Rp+Rs)/2; S_$nCyaH2  
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Tp=1-Rp; xdqK.Z%  
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Ts=1-Rs; RbKwO} z$q  
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Tn=(Tp+Ts)/2; 12-EDg/1  
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figure(2) &1l~&,,  
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subplot(1,2,1); T=>vh*J  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) ~XKZXGw  
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legend('R_p','R_s','R_n') vbaC+AiX  
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xlabel('\theta_i') M|H2kvl  
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ylabel('Amplitude') 9*DEv0}a^  

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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) y] y9'5_  
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axis([0 90 0 1]) - zQ<ZE  
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grid on ]);NnsG  
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subplot(1,2,2); vzG ABP  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) ~?d>fR:X  
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legend('T_p','T_s','T_n') ZJvo9!DL|  
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xlabel('\theta_i') 0#^Bf[Dn  
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ylabel('Amplitude') C/)`<b(  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) _@K YF)  
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axis([0 90 0 1]) lC4PKmno  
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grid on qlvwK&W<QM  

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2、光密射向光疏 #R<G,"N5  
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clear 61>f(?s  
}LQ\a8]<
 
close all MQ9vPgh  
s~Gw  
n1=1.45,n2=1; dm& /K 4c  
O8y9dX-2  
theta=0:0.1:90; .)t(:)*b  
u>}zm_  
a=theta*pi/180; HzEGq,.  
CW;m  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); y!hi"!  
AIv<f9*.:  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); Q1]Wo9j  
hIo0S8MOj$  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); \HD-vINV;  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 8W$
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5us^B8Q  
figure(1) 0R4akLW0  
bQj`g2eyM  
subplot(1,2,1); 0e\y~#-  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) +`Fb_m)f  
tvT4S  
legend('r_p','r_s','|r_p|','|r_s|') 4|=vxJ  
b}}y=zO|$  
xlabel('\theta_i') om>VQ3  

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ylabel('Amplitude') dE GX3 -  

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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) xl9(ze  
IX.sy  
axis([0 90 -1.5 1.5]) )$h-ZYc  
cd+^=esSO  
grid on k% NrL@z  
?b"Vj+1:x  
subplot(1,2,2); b|6!EGh  
q}sK  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) F+3!uWUK  
qw2)v*Fn  
legend('t_p','t_s','|t_p|','|t_s|') \imp7}N  
zhjJ>d%w  
xlabel('\theta_i') Rf?%Tv
0\  
1\IZcJ {  
ylabel('Amplitude') ?yf_Dt  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 8m|x#*5fQl  
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axis([0 90 -0.5 3]) wx./"m.M  
8yvJ`eL-  
grid on (rIXbekgB  
yi|:}K$  
Rp=abs(rp).^2; F^xaz^=`u  
\6i9q=  
Rs=abs(rs).^2; {zu/tCq?  
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Rn=(Rp+Rs)/2; A]#_"fayo  
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Tp=1-Rp; wa2~C [  
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Ts=1-Rs; H6{Rd+\Z  
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Tn=(Tp+Ts)/2; `BpCRKTG  
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figure(2) .T{U^0 )  
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subplot(1,2,1); K)Ge  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) OoSa95#x  
9T/<x-FD  
legend('R_p','R_s','R_n') Rn8#0%/Q  
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xlabel('\theta_i') @Ys
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g{]ej  
ylabel('Amplitude') ;=#qHo9k1%  
v3Eo@,-  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Wz5d|b  
]Px:d+wX:  
axis([0 90 0 1]) x7Eeb!s0f,  
^,>}%1\  
grid on ,d5ia4\K  
)|Jr|8  
subplot(1,2,2); ,~iFEaV+  
{<"[D([  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) :%pw`b, =V  
IK85D>00T  
legend('T_p','T_s','T_n') #i6[4X?  
]2g5Ka[>w  
xlabel('\theta_i') V`U/'N-ay  
.ZM]%[4  
ylabel('Amplitude') S`fu+^cv  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Y/#:)(&@  
cS+?s=d  
axis([0 90 0 1]) 3$;J0{&[i  
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grid on I)qKS@  
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这个在《MATLAB在光学中的应用》这本书里都有

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谢谢了楼主分享

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