[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 US*<I2ZLh  
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1、光疏射向光密 zwniS6R1  
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clear X<@y*?D9D  
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close all JE8p5WaR  
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n1=1,n2=1.45; `hQ!*f6  
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theta=0:0.1:90; h#6 jUQ  
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a=theta*pi/180; a_}BTkfHa  
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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)); 41+E UMc  
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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)); sLpCWIy  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); .AmM%I4K  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); `'WY'\|C  
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figure(1) j}x O34  
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subplot(1,2,1); d8y=.  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) VlQwVe  
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legend('r_p','r_s','|r_p|','|r_s|') \"sSS.'  
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xlabel('\theta_i') I5<#SW\a?  
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ylabel('Amplitude') LZAj4|~,m  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) /j5- "<;.  
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axis([0 90 -1 1]) F~0%j}ve  
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grid on B,na  
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subplot(1,2,2); 'I01F:`  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) m^u&g&^  
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legend('t_p','t_s','|t_p|','|t_s|') \5pAG mgD  
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xlabel('\theta_i') CR8r|+(8  
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ylabel('Amplitude') t-gNG!B  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) r+.4|u  
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axis([0 90 0 1]) aD3F!Sn  
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grid on aKFA&Xnsl  
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Rp=abs(rp).^2; 3ijI2Zy  
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Rs=abs(rs).^2; F p=Q$J|  
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Rn=(Rp+Rs)/2;
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Tp=1-Rp; 'pls]I]  
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Ts=1-Rs; I)/7M}t`  
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Tn=(Tp+Ts)/2;
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figure(2) )KhVUFS1  
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subplot(1,2,1); NHVx!Kc  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) >(4S `}K  
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legend('R_p','R_s','R_n') I=Dk'M  
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xlabel('\theta_i') ~W2&z]xD  
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ylabel('Amplitude') 6uE1&-:L  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) "X}F%:HL  
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axis([0 90 0 1]) JkDZl?x5  
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grid on =WRU<`\  
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subplot(1,2,2); :q[n1 O[Ch  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 3Ty{8oUs^  
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legend('T_p','T_s','T_n') 0$Db@  
1gK3=Ys  
xlabel('\theta_i') 4$w-A-\t  
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ylabel('Amplitude') Jl9TMu!1]  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) |3o@IuGt  
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axis([0 90 0 1]) `l#$l3v+  
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grid on O*CX@Ne  
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2、光密射向光疏 ->{WO+6(  
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clear dK$dQR#  
O:R{4Q*5  
close all X;RI7{fW%X  
!+l, m8Hly  
n1=1.45,n2=1; g5\B-3{  
Ro$XbU)  
theta=0:0.1:90; Y>~zt -  
7!)%%K.z6  
a=theta*pi/180; E/ )+hK&  
Ip-jqN J~  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 0~+k  
j(2T,WM  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); |sAg@kM  
,' B=eY,  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); [RuY'  
e/Y+S;a  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); %V/]V,w:*R  
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figure(1) $sJfxh r  
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subplot(1,2,1); ;
hDr+&J|  
tBQ> p.  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) \)WjkhG<w#  
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legend('r_p','r_s','|r_p|','|r_s|') LOzKpvGl  
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xlabel('\theta_i') x$I>e  
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ylabel('Amplitude') B\yid@e  
wl9icrR>  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) WFG/vzJ  
.}s a2-  
axis([0 90 -1.5 1.5]) _aYQ(FO  
:8 :>CHa  
grid on \PJ89u0  
i=@*F$,  
subplot(1,2,2); ]ghPbS@  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) iYkNtqn/  
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legend('t_p','t_s','|t_p|','|t_s|') ^<
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xlabel('\theta_i') ;{RQ+ZX'[  
ww,'n{_  
ylabel('Amplitude') 3&f{lsLAC  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Jjv&@a}  
%3wK.tR  
axis([0 90 -0.5 3]) hrK^oa_[W  
uDR(^T{g#  
grid on ;C'*U
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AsOI`@FV  
Rp=abs(rp).^2; (X/JXu{  
t|%ul6{gz  
Rs=abs(rs).^2; |EunDb[Y  
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Rn=(Rp+Rs)/2; 3V]a "C   
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Tp=1-Rp; tEl_A"^e  
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Ts=1-Rs; rcCMx"L=  
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Tn=(Tp+Ts)/2; LJ?7W,?  
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figure(2) \Uiw: ,  
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subplot(1,2,1); ^
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K9c:K/H  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) G8VWx&RE  
L-yC'C  
legend('R_p','R_s','R_n') *P>F# ~X  
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xlabel('\theta_i') }/|1"D  
<#sK~G  
ylabel('Amplitude') I~,*Rgv/Z  
(Q&Z/Fe  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) /OEj]DNY  
SX#ATf6#  
axis([0 90 0 1]) t+t&eg  
A#}IbcZ|b  
grid on =>9`qcNW_  
idHBz*3~ps  
subplot(1,2,2); SyI#Q[f'_  
o 0B`~7(  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) zrcSPh  
6v-h!1p{u  
legend('T_p','T_s','T_n') [1Rs~T"  
tG'c79D\  
xlabel('\theta_i') 2]|+.9B  
&0'BCT  
ylabel('Amplitude') dXZV1e1b&#  
5Jd,]~KAP  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 1:?WvDN=  
b@Fa|>"_  
axis([0 90 0 1]) B|tP3<  
:7'anj  
grid on HQ"D>hsuU  
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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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学习学习 b9FfDDOq"  

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