[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 *=QWx[K|  
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1、光疏射向光密 B?XqH_=0L  
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clear j&?@:Zg v  
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close all ~<_PjV  
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n1=1,n2=1.45; 6$+F5T  
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theta=0:0.1:90; K30{Fcb< h  
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a=theta*pi/180; ADZU?7)  
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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)); Y&b JKX  
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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)); !vSj1w  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); #F >R5 D  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); :'gX//b):  
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figure(1) uHO>FM,  
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subplot(1,2,1); &Sp2['a!  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) $~.'Tnk)  
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legend('r_p','r_s','|r_p|','|r_s|') q6>%1~?  
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xlabel('\theta_i') LZ*ZXFIg  
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ylabel('Amplitude') |"EQyV  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Q
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axis([0 90 -1 1]) L(qQ,1VY  
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grid on ZncJ  
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subplot(1,2,2); Bgj^n{9x  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) e47N9&4  
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legend('t_p','t_s','|t_p|','|t_s|') 4XXuj  
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xlabel('\theta_i') nhPua&  
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ylabel('Amplitude') z#elwL6  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) KI{B<S3*Z  
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axis([0 90 0 1]) u'+;/8  
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grid on h"DxgG  
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Rp=abs(rp).^2; yd4\%%]  
s xp>9&  
Rs=abs(rs).^2; 3=~0m  
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Rn=(Rp+Rs)/2; iSg^np  
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Tp=1-Rp; <*55d2  
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Ts=1-Rs; TY6Q;BTU  
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Tn=(Tp+Ts)/2; %^CoWbU  
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figure(2) 9( "<NB0y  
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subplot(1,2,1); f,}9~r#  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2)  &@h(6  
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legend('R_p','R_s','R_n') (!B1}5"  
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xlabel('\theta_i') ?(d<n   
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ylabel('Amplitude') 1Vy8TV3D  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) QpZCU]  
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axis([0 90 0 1]) 2=/,9
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grid on `8sC>)lrwu  
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subplot(1,2,2); $"[5]{'J  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) gONybz6]  
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legend('T_p','T_s','T_n') -L&%,%  
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xlabel('\theta_i') A5[iFT
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ylabel('Amplitude') L.tW]43K  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) C_ 4(-OWq  
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axis([0 90 0 1]) f\U(7)2  
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grid on 3JJE
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Thanks

学习学习 9L7jYy=A#  

学习学习

谢谢了楼主分享

thanks

谢谢了楼主分享

这个在《MATLAB在光学中的应用》这本书里都有

感谢楼主分享

2、光密射向光疏 #Q/xQ`+|.  
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clear jIjW +D`  
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close all `>u^Pm  

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n1=1.45,n2=1; B8>3GZi  
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theta=0:0.1:90; .5!Q(  
juEH$7N!  
a=theta*pi/180; 1AQ3<  
AZva  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); eE" *c>I  
=8AL>:_  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); Zb:S IJ  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); )j}v3@EM5  
Nt~G {m  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); rw%OA4>  
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figure(1) 7ZFd;-  
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subplot(1,2,1); +HEL^  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 2#@-t{\3-p  
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legend('r_p','r_s','|r_p|','|r_s|') ~;@\9oPpz%  
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xlabel('\theta_i') :?:R5_Nd=  
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ylabel('Amplitude') 6\RZ[g
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) m6o o-muAr  
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axis([0 90 -1.5 1.5]) 6c*QBzNL  
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grid on ;RS^^vDm  
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subplot(1,2,2); :8Ugz~i  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) u(~(+1W  
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legend('t_p','t_s','|t_p|','|t_s|') !-tVt D  
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xlabel('\theta_i') 9j<7KSj  
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ylabel('Amplitude') 5 ~YaXh^  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ><{Lh@{  
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axis([0 90 -0.5 3]) Z@bKYfGM  
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grid on E2Ec
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Rp=abs(rp).^2; 8>'vzc/*>  
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Rs=abs(rs).^2; 
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Rn=(Rp+Rs)/2; Dj{=Y`Tw  
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Tp=1-Rp; mBDzc(_\$'  
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Ts=1-Rs; Q$x 3uH\@  
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Tn=(Tp+Ts)/2; q}hHoSG]=  
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figure(2) a>egH og  
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subplot(1,2,1); ;& zBNj  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) BCt>P?,UO  
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legend('R_p','R_s','R_n') gNSsT])  
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xlabel('\theta_i') 8YO` TgW  
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ylabel('Amplitude') VTn6@z_ x  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ]Mj N)%hT  
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axis([0 90 0 1]) Q;=3vUN  
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grid on MG4(,"c!  
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subplot(1,2,2); 9.Yn]O  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) =HHb ]JE  
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legend('T_p','T_s','T_n') I~25}(IDZ"  
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xlabel('\theta_i') Q`BB@E  
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ylabel('Amplitude') :7pt
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) $#FA/+<&$  
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axis([0 90 0 1]) 7QHrb'c  
Y{2L[5_1  
grid on :@J.!dokF  
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