[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 baVSQtda  
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1、光疏射向光密 "TgE@bC  
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clear 1S26
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close all z}[qk:  
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n1=1,n2=1.45; wWNHZv&  
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theta=0:0.1:90; Xu8_
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a=theta*pi/180; g@jAIy]  
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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)); 7~V,=WEe  
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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)); Aj;F$(su  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); iS"(  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 1L=6Z2*fB4  
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figure(1) Z$? Ql@M  
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subplot(1,2,1); @!:~gQ  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) V~uH)IMkh7  
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legend('r_p','r_s','|r_p|','|r_s|') PmGW\E[ni  
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xlabel('\theta_i') >7VOytc  
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ylabel('Amplitude') 1px8af]  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) `KgWaf-  
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axis([0 90 -1 1]) w<hw>e^.  
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grid on Qv%"iSe~J  
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subplot(1,2,2); mOb*VH  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 4X@ <PX5  
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legend('t_p','t_s','|t_p|','|t_s|') VV*Z5U@b  
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xlabel('\theta_i') c7[<X<yk  
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ylabel('Amplitude') :3s5{s  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) mZ^z%+Ca|  
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axis([0 90 0 1]) w(QU'4~  
>[=fbL@N<@  
grid on Lbka*@  
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Rp=abs(rp).^2; tSVN}~1\  
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Rs=abs(rs).^2; p`jkyi  
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Rn=(Rp+Rs)/2; ccc*"_45#  
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Tp=1-Rp; <n4T*  
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Ts=1-Rs; HJVi:;o  
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Tn=(Tp+Ts)/2; z+K-aj w  
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figure(2) uXX3IE[  
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subplot(1,2,1); l,n0=Ew  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) 2sj
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legend('R_p','R_s','R_n') @l)HX'z0d  
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xlabel('\theta_i') ~s@PP'!  
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ylabel('Amplitude') *9#6N2J$M  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) B{UL(6\B  
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axis([0 90 0 1]) 5OUGln5
 
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grid on <j}n/G]  
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subplot(1,2,2); Arg604V3  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) k8!|WqfP  
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legend('T_p','T_s','T_n') !~+"TI}_%w  
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xlabel('\theta_i') 3/rEXKS  
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ylabel('Amplitude') r5U[jwP  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Lnin;0~{  
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axis([0 90 0 1]) )Gf"#TM[  
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grid on bC_qoI<   
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2、光密射向光疏 #%Z 0!  
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clear Y[_{tS#u  
<+7]EwVcn^  
close all T;7=05k<_  
5Q)hl.<{o7  
n1=1.45,n2=1; _/FpmnaY  
29a~B<e7s  
theta=0:0.1:90; UweXz.x7  
\fX0&l;T9\  
a=theta*pi/180; ;rp("<g:>  
ld*W\  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); %Aqt0e  
c@eQSy  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); HPGIz!o  
kn$2_I9  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); l(irNKutgo  
8iv0&91Z  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); }u3Q*oAGl  
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figure(1) /Bt+Ov3k  
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subplot(1,2,1); Ch] `@(l  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) "3&bh>#qY  
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legend('r_p','r_s','|r_p|','|r_s|') p`+=) n  
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xlabel('\theta_i') ";kwh8wB  
4Nb&(p  
ylabel('Amplitude') oouhP1py,  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)])
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axis([0 90 -1.5 1.5]) Kia34 ~W  
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grid on %qycxEVP  
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subplot(1,2,2); (BT{\|,V_m  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) &c AFKYt  
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legend('t_p','t_s','|t_p|','|t_s|') T{CCZ"Fv  
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xlabel('\theta_i') M~?2g.o'D  
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ylabel('Amplitude') pu"m(9  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) s)A=hB-V  
3D}rxI8N  
axis([0 90 -0.5 3]) j7XUFA  
fb=[gK#*,  
grid on C:9a$  
HV?Q{XK.b  
Rp=abs(rp).^2; :aO`q/d  
4[XiD* *  
Rs=abs(rs).^2; &6@#W]_  
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Rn=(Rp+Rs)/2; rOo|.4w  
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Tp=1-Rp; FJ+n- \  
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Ts=1-Rs; V[#$Sz[G  
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Tn=(Tp+Ts)/2; ` it<\r[=  
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figure(2) d69synEw>k  
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subplot(1,2,1); Lz/{ q6>  
nB9(y4  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) l+r3|b  
4(D1/8  
legend('R_p','R_s','R_n') PR2;+i3  
mHB0eB'l  
xlabel('\theta_i') v.!e1ke8D*  
yEPkF0?  
ylabel('Amplitude') =K;M\_k%y  
@c-| Sl  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ]Vm:iF#5P  
DX(!G a  
axis([0 90 0 1]) 3+WmM4|  
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grid on B1k;!@@14  
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subplot(1,2,2); IJk<1T7:(W  
.jv#<"DW  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) ec&K}+p@  
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legend('T_p','T_s','T_n') kKs}E| T  
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xlabel('\theta_i') <i ";5+  
#/ HQ?3h]  
ylabel('Amplitude') j2`%sBo  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 1wLEkp!~  
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axis([0 90 0 1]) VT2f\d[Q  
Xk9 8%gv  
grid on .!)i   
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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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