[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 4tx|=;@0  
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1、光疏射向光密 j w* IO  
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clear 7u[j/l,  
%0Y=WYUH>  
close all 'Z`$n8  
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n1=1,n2=1.45; R1Ye<R!Q  
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theta=0:0.1:90; QORN9SY  
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a=theta*pi/180; Jdy=_88MD  
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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)); B>Wu;a.:L  
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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)); dCu'>G\bP  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); <[GYLN[0Q  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); l6kmS  
Bb{!Yh].:A  
figure(1) T}3v(6ew4  
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subplot(1,2,1); V]S1X^
 
1T)Zh+?)}  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) M.td^l0  
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legend('r_p','r_s','|r_p|','|r_s|') B??J@+Nf  
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xlabel('\theta_i') gGMWr.! 8  
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ylabel('Amplitude') $0^P0RAH  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) \(p{t  
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axis([0 90 -1 1]) 7Dl
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grid on u =gt<1U  

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subplot(1,2,2); TEsnNi 1  
dC}`IR  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 0Aa`p3.)  
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legend('t_p','t_s','|t_p|','|t_s|') UhmTr[&  
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xlabel('\theta_i') -=698h*  
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ylabel('Amplitude') YRlDX:oX~  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) (Vg}Hh?p  
(cv!Y=]  
axis([0 90 0 1]) yg]2erR  
s=Q(C[%I  
grid on @ \2#Dpr  
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Rp=abs(rp).^2; M`D$!BJr  
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Rs=abs(rs).^2; S'B6jJK2x  
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Rn=(Rp+Rs)/2; `:M^8SYrL  
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Tp=1-Rp; ji
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Ts=1-Rs; W4YE~  
j[6Raf/(n  
Tn=(Tp+Ts)/2; l0tYG[  
x
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figure(2) A<YsfDa_d  
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subplot(1,2,1); ZkB3[$4C=5  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) NHX>2-b  
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legend('R_p','R_s','R_n') > 8]j   
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xlabel('\theta_i') TOI4?D]  
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ylabel('Amplitude') 0_eQlatb  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) K'6[J"dB  
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axis([0 90 0 1]) !D.0 (J  
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grid on o4=Yu7L  
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subplot(1,2,2); Qu{cB^Ga*  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) N b3$4(F  
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legend('T_p','T_s','T_n') [~Hg}-c  
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xlabel('\theta_i') L*]E`Xxd9  
SlT*C6f  
ylabel('Amplitude') 1(`M~vFDK  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) #w3ru6*W  
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axis([0 90 0 1]) 4?]oV%aP)  
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grid on 9Yw]Y5l  
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2、光密射向光疏 jEU'.RBN%  
ch,|1}bi  
clear \C\gn]Z  
E#h~V5Tf  
close all 52<~K  
>C2HC6O3  
n1=1.45,n2=1; /e5\9  
/| GH0L  
theta=0:0.1:90; Hhf72IX  
QAaF@Do  
a=theta*pi/180; m
e'(lQ6^  
0(TvQ{  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); R@ QQNYU.D  
-lp"#^ ;  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); =K6c;  
2}`R"MeS  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); b{HhS6<K?  
jT"r$""1d  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); FU]4oKx  
BHiOQ0Fs  
figure(1) P7>IZ >bw  
1#!@["  
subplot(1,2,1); *SGlqR['\e  
>x?2Fz.  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 0o;~~\fq.  
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legend('r_p','r_s','|r_p|','|r_s|') ,Qo}J@e(  
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xlabel('\theta_i') {jG.=}/Dk  
As}eUm)B5c  
ylabel('Amplitude') ZV#$Z  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) f#mx:Q.7I  
V(I7*_ZFl  
axis([0 90 -1.5 1.5]) 1*#bfeoM  
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grid on d"!yD/RD  
\CtQ*[FmN  
subplot(1,2,2); $/.<z(F  
4zX=3iBt  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) aL 8Gnqf2  
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legend('t_p','t_s','|t_p|','|t_s|') Uir*%*4:  
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xlabel('\theta_i') :B+Rg cqi  
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ylabel('Amplitude') $"1pws?d  
yI:r7=KO  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) $Br>KJ%'g  
2b!j.T#u  
axis([0 90 -0.5 3]) ,N0uR@GN  
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grid on F1\`l{B,\  
O*ImLR)i+s  
Rp=abs(rp).^2; :F9q>  
uNg'h/^NZ|  
Rs=abs(rs).^2; Q-jf8A]  
QK'`=MU  
Rn=(Rp+Rs)/2; kLq(!Gs  

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Tp=1-Rp; 44Q9*."  
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Ts=1-Rs; ,FY-d$3)  
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Tn=(Tp+Ts)/2; quY "  
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figure(2) OH0S2?,{>  
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subplot(1,2,1); Nr%(2[$ =  
5^b i 7J  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) x'zihDOI  
CJm.K  
legend('R_p','R_s','R_n') D{Oq\*  
8H7O/n  
xlabel('\theta_i') HLM
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TZ:34\u  
ylabel('Amplitude') !e&rVoA  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) -}E)M}W  
^l--zzO8l  
axis([0 90 0 1]) epn#qeX  
gm(De9u  
grid on 2YE7 23H=Z  
r)OO&. P@j  
subplot(1,2,2); A*a7\id!y  
8W;xi:CC  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) :4%<Rp  
Q!YF!WoBX  
legend('T_p','T_s','T_n') 3mk=ZWwv  
|xp$OL"a  
xlabel('\theta_i') Q,D0kS P  
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ylabel('Amplitude') kkT3wP  
O+p]3u  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Mm "Wk  
B*y;>q "{U  
axis([0 90 0 1]) IhUW=1&J  
<njIXa{  
grid on Cca6L9%  
K2*1T+?X  
Y 5Qb4Sa  
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这个在《MATLAB在光学中的应用》这本书里都有

谢谢了楼主分享

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谢谢了楼主分享

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