[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 jSQM3+`b  
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1、光疏射向光密 9hei8L:  
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clear tI<6TE'!p#  
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close all "9IR|  
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n1=1,n2=1.45; ~IFafAO&  
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theta=0:0.1:90; u/apnAW@M  
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a=theta*pi/180; ETm:KbS  
uBw[|,yn2*  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); ^[VEr"X  
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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)); i(YR-vYK  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); i(4.7{*  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); r_MP[]f|0  
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figure(1) 
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subplot(1,2,1); Pf~0JNnc  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2)
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MhjIE<OI=  
legend('r_p','r_s','|r_p|','|r_s|') ]/|D
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xlabel('\theta_i') `)NTJc$):  
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ylabel('Amplitude') :BF WX  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) OI:T#uk5  
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axis([0 90 -1 1]) 1[-RIN;U8  
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grid on Z ZT2c0AK  
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subplot(1,2,2); @ev^e!B  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) yMOYTN@]  
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legend('t_p','t_s','|t_p|','|t_s|') g`,(O  
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xlabel('\theta_i') z'zC  
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ylabel('Amplitude') kdMB.~(K=  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) _+gpdQq\p  
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axis([0 90 0 1])  v%QCp  
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grid on R(2MI}T  
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Rp=abs(rp).^2; hP/uS%X   
R=W$3Ue~,  
Rs=abs(rs).^2; z.W1Za  
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Rn=(Rp+Rs)/2; (JiEV3GH  
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Tp=1-Rp; SNV;s,  
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Ts=1-Rs; !)c0  
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Tn=(Tp+Ts)/2; (; Zl  
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figure(2) 'IER9%V$  
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subplot(1,2,1); b{W ,wn  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) UL" <V  
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legend('R_p','R_s','R_n') [ HjG
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xlabel('\theta_i') 4;w#mzd  
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ylabel('Amplitude') 8
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) U9AtC.IG!  
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axis([0 90 0 1]) \g|;7&%l3  
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grid on c:}K(yAdd  
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subplot(1,2,2); /zV0kW>N  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) yNQ 9~P2  
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legend('T_p','T_s','T_n') !
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xlabel('\theta_i') Q1'D*F4  
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ylabel('Amplitude') g? \pH:|79  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) "?sLi  
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axis([0 90 0 1]) Ia)
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grid on GG_A'eX:I  
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2、光密射向光疏 jW",'1h
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clear \>/:@4oK  
Sb[rSczS~  
close all #(*WxVE  
I.e'  
n1=1.45,n2=1; [%nG_np  
=-pss 47  
theta=0:0.1:90; z?"5="D  
pN]Hp"v  
a=theta*pi/180; MgMLfgt"V  
Pjb9FCA'  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); a\m10Ih:  
gkk<-j'  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); ,em6wIq,  
1I
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 6l vx  
p go\(K0  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); q%:Jmi>  
(Fgt#H(B  
figure(1) r IK|}5  
sqZHk+<%  
subplot(1,2,1); *u{.K:.I  
F<(xz=  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) Eq<#pX6  
0RSa{iS*A  
legend('r_p','r_s','|r_p|','|r_s|') H@j^,  
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xlabel('\theta_i') nG%j4r ;  
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ylabel('Amplitude') l*:p==  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) \!V6` @0KC  
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axis([0 90 -1.5 1.5]) %-'U9e KN  
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grid on zuPH3Q
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subplot(1,2,2); X*yl%V  
#dfW1@m  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 0?h .X=G  
V7@xr M  
legend('t_p','t_s','|t_p|','|t_s|') T+ t-0k  
vZDQ@\HrC  
xlabel('\theta_i') &^7)yS+C  
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ylabel('Amplitude') 5k(#kyP  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) &sRJ'oc  
l&A`  
axis([0 90 -0.5 3]) mHMej@  
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grid on f\^QV  
gPi_+-@  
Rp=abs(rp).^2; |#B"j1D,H  
z} \9/`  
Rs=abs(rs).^2; }00e@a  
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Rn=(Rp+Rs)/2; ^>p [b  
yW&iUh=0  
Tp=1-Rp; \nyFN  
K]oPh:E  
Ts=1-Rs; w8i!Qi#y5D  
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Tn=(Tp+Ts)/2; gZUy0`E  
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figure(2) $S}x'F!4_  
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subplot(1,2,1); ;R!
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p o`$^TB^+  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) XL3h ;$,  
K0g:Q*J-  
legend('R_p','R_s','R_n') 1X*T219o  
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xlabel('\theta_i') c" 7pf T  
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ylabel('Amplitude') bSghf"aN  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) K
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axis([0 90 0 1]) TH!8G,(w  
g4X,*H  
grid on wVOL7vh  
`RcNqPY#S  
subplot(1,2,2); $hQg+nY.  
5uer [1A  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 72zuI4&  
+_dYfux  
legend('T_p','T_s','T_n') z)>{O
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xlabel('\theta_i') :gq@/COo(  
%6'D!H?d  
ylabel('Amplitude') =7Vl{>*1N  
9VE;I:NO3  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ELF`uWGE  
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axis([0 90 0 1]) k#JG  
N{t:%[  
grid on C
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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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谢谢了楼主分享

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