[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 B$OV^iwxK  
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1、光疏射向光密 $WRRCB/A6  
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clear hZ|0<u  
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close all 71IM`eL=ED  
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n1=1,n2=1.45; Wj)v,v2&  
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z  
theta=0:0.1:90; c[3x>f0  
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a=theta*pi/180; C%%gCPI^y  
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rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 3C;;z  
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rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 7uu\R=$  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); -U7,~z  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); NTGWI$  
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figure(1) ~XXNzz]?  
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subplot(1,2,1); >%N,F`^3  
s`yg?CR`,  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) McbbEs=)  
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legend('r_p','r_s','|r_p|','|r_s|') lQRtsmZ0  
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xlabel('\theta_i') )RWY("SUy1  
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ylabel('Amplitude') w%oa={x  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) yYTOp^  
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axis([0 90 -1 1]) eT2Tg5Etc  
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grid on QM~~b=P,\  
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subplot(1,2,2); s?Gv/&  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) CLuQ=-[
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legend('t_p','t_s','|t_p|','|t_s|') Z;;A#h'%e  
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xlabel('\theta_i') s._,IW;   
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ylabel('Amplitude') Vhe$vH  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ]{t!J^Xn  
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axis([0 90 0 1]) %z~kHL  
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grid on e)XnS'  
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Rp=abs(rp).^2; 6y^GMlsI  
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Rs=abs(rs).^2; lPtML<a  
m|OB_[9  
Rn=(Rp+Rs)/2; .Ep&O#  
s+=':Gcb(C  
Tp=1-Rp; j^hLn>  
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Ts=1-Rs; mGJRCK_  
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Tn=(Tp+Ts)/2; G9GLRdP  
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figure(2) BP\6N%HC%&  
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subplot(1,2,1); <zAYq=IU  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) dB:c2  
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legend('R_p','R_s','R_n') ;=6EBP%  
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xlabel('\theta_i') |WOc0M[U  
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ylabel('Amplitude') aEVy20wd  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) VC%.u.< F  
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axis([0 90 0 1]) R-wz+j#  
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grid on MpIiHKQ G9  
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subplot(1,2,2); 8N3y(y0  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) H/={RuU  
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legend('T_p','T_s','T_n') {OOn
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xlabel('\theta_i') JZ&_1~Z=  
?zbWz=nq  
ylabel('Amplitude') o
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t`>Z#=cl\  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) YBF$/W+=9|  
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axis([0 90 0 1]) %&q}5Y4!  
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grid on {];-b0MS~  
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2、光密射向光疏 =9,^Tu|  
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clear J_m@YkK  
RVLVY:h|F  
close all r\Yh'cRW{  
Id>4fF:o  
n1=1.45,n2=1; +mzLOJ
ed  
HEIg_6sb  
theta=0:0.1:90; P".IW.^kk~  
x;\/Xj;  
a=theta*pi/180; oD1k7Gq1  
$(]nl%<Q  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); IF\ @uo`  
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rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); :."oWqb)  
Q~VM.G  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 2Q5@2jT  
nJ xO.wWE  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); & d2`{H  
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figure(1)  X0$q!  
x&0kIF'lq  
subplot(1,2,1); 8T6NG!/  
-)VjjKz]8  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) \=bKuP(it  
s&-MJ05y  
legend('r_p','r_s','|r_p|','|r_s|') q CYu@Ho  
0<NS1y  
xlabel('\theta_i') p'1/J:EnV  
kLZVTVSJt  
ylabel('Amplitude') $Th)z}A}EA  
+>K&zS  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) >X'-J{4R  
J{Kw@_ypP  
axis([0 90 -1.5 1.5]) nReld :#T  

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grid on UU MB"3e  
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subplot(1,2,2); {7z]+h  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) J
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legend('t_p','t_s','|t_p|','|t_s|') KvPCb%!ZP  
c {%mi  
xlabel('\theta_i') }6/M5zF3  
H?J:_1  
ylabel('Amplitude') Q47R`"  
}9fch9>Zr  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) TnK<Wba  
6&ut r!\7  
axis([0 90 -0.5 3]) jS##zC  
NimgU Fa  
grid on kaB|+U9^  
dX@ic,?  
Rp=abs(rp).^2; #?>)5C\Hqy  
dB0#EJaE  
Rs=abs(rs).^2; %\HPYnIe  
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Rn=(Rp+Rs)/2; ~io.TS|r  
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Tp=1-Rp; {L%
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Ts=1-Rs; aH'fAX0bF  
?4/pE@RIy  
Tn=(Tp+Ts)/2; vu\W5M  
*$fM}6}  
figure(2) }%/mPbd#  
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subplot(1,2,1); ZF[W<Q  
klT?h[I!  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) %"A8Af**I  
G&{yM2:E  
legend('R_p','R_s','R_n') l!88|~  
PKrG6% W+  
xlabel('\theta_i') >jhcSvM6  
:p/=KI_  
ylabel('Amplitude') zMbFh_dcq  
sPvs}}Z]P  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ;7:} iKU  
AYfOETz  
axis([0 90 0 1]) <$z[pw<  
L{%L*z9J  
grid on }={@_g#  
'2lzMc>wvP  
subplot(1,2,2); Eb[;nk?  
HZRFE[ 9nb  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) qr%N/7  
|JIlp"[  
legend('T_p','T_s','T_n') m_/Ut  
Tty'ysH  
xlabel('\theta_i') q*&H  
L.'61ZU  
ylabel('Amplitude') \{ EVRRXn  
oqF?9<Vgc,  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) J\*uW|=F  
)v_Wn[Y.H  
axis([0 90 0 1]) FJtmRPP[r  
Ip{R'H
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grid on piM4grg \  
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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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