[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 '(5 &Sj/C  
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1、光疏射向光密 ^*`{W4e]  
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clear !X(Lvt/  
pL]C]HGv  
close all Dp6]!;kx  
3q R@$pm  
n1=1,n2=1.45; 5znLpBX<N  
}IC$Du#  
theta=0:0.1:90; 4-eb&
 
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a=theta*pi/180; wp-5B= #:{  
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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)); X1]&j2WR  
 $Tfq9  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); (?J6vK}S  
[`_&d7{-4b  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); <P'^olQ  
K$\az%NE  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); p^&' C_?  
hmtRs]7  
figure(1) k~>9,=::d  
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subplot(1,2,1); u6'vzLmM  
Ms<^_\iPN  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 95_?F7}9  
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legend('r_p','r_s','|r_p|','|r_s|') }
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xlabel('\theta_i') bS3qX{5  
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ylabel('Amplitude') BcX}[?c  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) z tHGY  
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axis([0 90 -1 1]) -3/:Dk`3  
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grid on Z_iu^Q  

M/5/Tp  
subplot(1,2,2); doBfpQ2  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) D2[wv+#)  
k*-_CO-h  
legend('t_p','t_s','|t_p|','|t_s|') >f^&^28  
Y6`9:97  
xlabel('\theta_i') G#HbiVH9  
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zg>y  
ylabel('Amplitude') r%xp^j}  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) \_!FOUPz(  
G`R Ed-Z[  
axis([0 90 0 1]) a)(j68c
 
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grid on F] +t/
 
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Rp=abs(rp).^2; YdV5\!  
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Rs=abs(rs).^2; ,M>W)TSH  
$9y]>R  
Rn=(Rp+Rs)/2; 3LG}x/l  
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Tp=1-Rp; u%V=Ze  
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Ts=1-Rs; BgA\l+  
ba%[!  
Tn=(Tp+Ts)/2; 29Kuq;6  
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figure(2) Z"lL=0rY/  
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subplot(1,2,1); x~$P.X7(~  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) ";`ddN3  
)3.udx  
legend('R_p','R_s','R_n') 9*[!uu  
Nk3]<#$  
xlabel('\theta_i') -v&Q'a  
XEfTAW#7  
ylabel('Amplitude') eoR@5OA&  
({m["d  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 7Hf6$2Wh  
|E53 [:p  
axis([0 90 0 1]) K *{C:Y  
=V"ags  
grid on Cs^o- g!L  
:B$=Pp1  
subplot(1,2,2); j6/ 3p|E  
L0UAS'hf  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) KFAB  
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legend('T_p','T_s','T_n') 3Nr8H.u&q  
Kw(/#C:$  
xlabel('\theta_i') U>e@m?  
,$}P<WZMu  
ylabel('Amplitude') D@[$?^H  
PX?tD:,[-  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) *#N%3:@T  
T(a*d7  
axis([0 90 0 1]) i/C#fIB2  
tOnaD]J  
grid on g[8VfIe  
Lg9]kpOpa  
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2、光密射向光疏 1?7QS\`)fB  
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z]W;  
clear _[0Ugfz(  
d@C ;rzR  
close all /I[cj3}{+f  

@m6pAo4P  
n1=1.45,n2=1; :".!6~:2  
O-|RPW}  
theta=0:0.1:90; YV!!bI  
%{zM> le9  
a=theta*pi/180; g=i|D(".  
"Hgn2o.;5  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); Bw{@YDO{  
t:m t9}$d  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); XKks j!'B  
(9Hc`gd)p  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); sUj#:X  
(e F5?I  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); xU@Z<d,k  
}pTw$B  
figure(1) 27u$VHwb  
_QXo4z!a8  
subplot(1,2,1); Ta9;;B?$  
7yQ r  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) YI%S)$  
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legend('r_p','r_s','|r_p|','|r_s|') >z[d~  
b#82G`6r  
xlabel('\theta_i') :^l*_v{  
zYls>fbp,  
ylabel('Amplitude') Bm~>w`1wK  
?KS9Dh  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) fC~WuG3  
w`!Yr:dU  
axis([0 90 -1.5 1.5]) /f0_mi,bD  
jg%D G2  
grid on Ln`c DZSM  
z,2m7C  
subplot(1,2,2); 9F,jvCM63  
.`hlw'20  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) h[XGFz  
NiyAAw  
legend('t_p','t_s','|t_p|','|t_s|') [FC%_R&&  
WZFV8'  
xlabel('\theta_i') 7[u&%  
4~o\Os+8  
ylabel('Amplitude') NugJjd56x  
]0`[L<_r  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Nc;7KMOIA  
nG8]c9\Q#  
axis([0 90 -0.5 3]) kkzXv`+  
c)E'',-J_2  
grid on 0K#dWc}"a  
`8'|g8,wb0  
Rp=abs(rp).^2; &JF^a  
B<0lif|  
Rs=abs(rs).^2; DOR
FK  
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Rn=(Rp+Rs)/2; $6Ty~.RP5H  
BF]b\/I  
Tp=1-Rp; 7J 0!vq  
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Ts=1-Rs; xNm<` Y?  
yq&]>ox  
Tn=(Tp+Ts)/2; H:~LL0Md%  
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figure(2) ){wE)NN  
1miTE4;?  
subplot(1,2,1); ;OVJM qg  
nR ,j1IUF  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) Ad`;O+/;  
v"bOv"!al  
legend('R_p','R_s','R_n') v,2{Vr  
Ymn0?$,D1=  
xlabel('\theta_i') W=G[hT5L{  
6lZhV[~Z/  
ylabel('Amplitude') o#6j+fo!n  
.m+KXlP  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) `FmI?:Cv  
y~W6DL}  
axis([0 90 0 1]) ]huqZI  
|'a5nh!  
grid on %tpt+N?  
ob0clJX  
subplot(1,2,2); <0lfkeD  
.CmwR$u&  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) FC)aR[  
cG^'Qm  
legend('T_p','T_s','T_n') Zcf?4{Kd?  
w#-rl@JQ4  
xlabel('\theta_i') lRentNg0b  
-i 6<kF-W  
ylabel('Amplitude') ~+4OG 0  
IY :iGn8R  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) j@ =n|cq  
c%v%U &  
axis([0 90 0 1]) oOSw>23x  

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grid on )vo PH)!  
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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

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谢谢了楼主分享

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