[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 }
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1、光疏射向光密 d09qZj>  
dum(T  
clear n=8DC&  
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close all u P&<  
5%K(tRc|  
n1=1,n2=1.45; 5xIOi(3`Q  
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theta=0:0.1:90; :5, k64'D  
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a=theta*pi/180; W0qn$H  
Hph$Z1{  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); =`W#R  
Y4j%K~lsY  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); @||GMA+|  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 3U
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); z5q(  
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figure(1) 25wvB@0&  
m(rd\3d  
subplot(1,2,1); W%_Cda5,  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) x$+g/7*  
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legend('r_p','r_s','|r_p|','|r_s|') *h)|Ks  
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xlabel('\theta_i') sMHP=2##  
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ylabel('Amplitude') r[W Ir|r7  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) sRaTRL2  
f*E#E=j  
axis([0 90 -1 1]) 8;GuJP\  
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grid on ]3&BLq  
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subplot(1,2,2); v FWg0 $,  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) lSK<LytB  
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legend('t_p','t_s','|t_p|','|t_s|') eccJt  
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xlabel('\theta_i') ;!Q}g19C  
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ylabel('Amplitude') .F^372hH3  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) c#<p44>U  
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axis([0 90 0 1]) _]6n]koD,  
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grid on y\@INA^  
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Rp=abs(rp).^2; l,@rB+u
 
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Rs=abs(rs).^2; 9`Zwa_Tni  
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Rn=(Rp+Rs)/2; 5Zy%Nam'gN  
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Tp=1-Rp; LyNLz m5  
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Ts=1-Rs; rPUk%S  
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Tn=(Tp+Ts)/2; K(75)/  
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figure(2) 1^AG/w  
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subplot(1,2,1); <}('w/  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) v!6IH  
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legend('R_p','R_s','R_n') c$b~?Mx  
|h^]`= 3  
xlabel('\theta_i') 0}q
nq"  
^ RIWW0  
ylabel('Amplitude') "/0Vvy_|  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) nNpXkI:  
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axis([0 90 0 1]) V|j{#;  

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grid on v%E~sX&CG  
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subplot(1,2,2); $VnPs!a  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) wuKr9W9Xa  
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legend('T_p','T_s','T_n') :b"&Rc&s.  
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xlabel('\theta_i') ZYs?65.  
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ylabel('Amplitude') p@[n(?duC.  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) I/)*pzt8  
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axis([0 90 0 1]) 9"cyZO  
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grid on }.N~jx0R  
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2、光密射向光疏 JQ9+kZ  
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clear He1~27+99  
=4 NKXP~C  
close all
zuI7Px  
3u/ Grs
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n1=1.45,n2=1; _*-b0}T   
cp2a @  
theta=0:0.1:90; wQ?Z y;/S  
-q&7q  
a=theta*pi/180; vDC
bD#.6  
,:% h`P_  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); RmJ|g<  
7ea%mg\  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); i4lB]k  
TGuCIc0B{  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); A`1
-c  
Z_s]2y1  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); F`CDv5  
X0]Se(  
figure(1) y\R-=Am".  
BiA^]h/|  
subplot(1,2,1); 
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,.AXQ#~&`  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) j43i:c;F  
h9QQ8}g  
legend('r_p','r_s','|r_p|','|r_s|') 2]}e4@{  
k#G+<7c<  
xlabel('\theta_i') j]m|}n  
cd] X5)$h  
ylabel('Amplitude') Si68_]:^  
+/rh8?  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) n1)].`  
*_"lXcG.  
axis([0 90 -1.5 1.5]) 1-Q>[Uz,  
W=4|ahk$  
grid on 02C;  
Tj=@5lj0  
subplot(1,2,2); BR
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X [;n149o  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) p7[&H/  
|`Be(  
legend('t_p','t_s','|t_p|','|t_s|') 8xHjdQr  
j&0t!f.Rv  
xlabel('\theta_i') sNJ?Z"5k1h  
r]&&*:  
ylabel('Amplitude') f0g&=k{OD  
jyC>~}?  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) \p\rPfY{>  
Dm`gzGl  
axis([0 90 -0.5 3]) Job&qW9W`  
s_76)7  
grid on |sDp>..  
b<KKF'  
Rp=abs(rp).^2; s$VLVT*6  
;MjOs&1f0K  
Rs=abs(rs).^2; bM $WU?Z  
RueL~$*6.~  
Rn=(Rp+Rs)/2; IFWP&20  
.T}S[`Yx5  
Tp=1-Rp; r-o6I:y  
VB{G%!}  
Ts=1-Rs; KT8]/T`U  
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Tn=(Tp+Ts)/2; mOx>p"n  
vC5y]1QDd  
figure(2) tNCKL.yU  
;EfREfk  
subplot(1,2,1); n\H.NL)  
1 *$-.  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) q=cH ^`<.  
!u|s|6{\  
legend('R_p','R_s','R_n') @0q*50  
u\|Ys  
xlabel('\theta_i') b `.h+=3  
d<4q%y'X{  
ylabel('Amplitude') :[7.YQ   
p*(]8pDC  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) &sJ%ur+G  
Tof H=d  
axis([0 90 0 1]) w.\#!@kZ!  
X
vspE}~y  
grid on &c
1zEgl  
%QrpFE5V5  
subplot(1,2,2); >0qe*4n|M  
lVQy {`Ns  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) z gDc=  
'w5g s
}1D  
legend('T_p','T_s','T_n') :IlJQ{=W  
42mZ.,<  
xlabel('\theta_i') b^]@8I[M  
 @Iy&Qo  
ylabel('Amplitude') k3B-;%3I;  
D/-$~u_o  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) }hv" ku6!  
K-b'jP\  
axis([0 90 0 1]) jVtRn.qh  
Fb{kql=  
grid on >?Ps5n]b  
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c={bunnz#  
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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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