[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 od@!WjcM[8  
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1、光疏射向光密 )MV `'i  
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clear 'mv|6Y  
Q=<&ew  
close all <,*w$  
~urk Uz  
n1=1,n2=1.45; F&k<P>k  
i*xVD`x~  
theta=0:0.1:90; rIyIZWkI  
u9 *ic~Nh  
a=theta*pi/180; yp hd'Pu"  
pNHL&H\  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); u3X!O  
'*U_!RmQ  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); Q>z(!'dw  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 5n::]Q%=D  
GB*^?Ii  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 5:~ zlg  
g|]Hm*  
figure(1) ?U:c\TA,m  
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subplot(1,2,1); $?&distJ  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) >'3nsR  
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legend('r_p','r_s','|r_p|','|r_s|') }Zp[f6^Q  
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xlabel('\theta_i') N]I::  
t,5AoK/NL9  
ylabel('Amplitude') 0sq?>$~Kc*  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) SphP@J<ONW  
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axis([0 90 -1 1]) |UQGZ  
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grid on UJ)(Sw  
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subplot(1,2,2); :dlG:=.W  
C7l4X8\w  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) oJc v
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legend('t_p','t_s','|t_p|','|t_s|') u~'j?K.^  
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xlabel('\theta_i') s8*Q@0  
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ylabel('Amplitude') xn<x/e  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) S8e?-rC  
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axis([0 90 0 1]) |v"&Y  
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grid on ?J5E.7o  
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Rp=abs(rp).^2; 0[-@<w ^j  
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Rs=abs(rs).^2; \k%j  
g0s*4E  
Rn=(Rp+Rs)/2; 239gpf]}  
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Tp=1-Rp;
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Ts=1-Rs; JIMi~mEiN  
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Tn=(Tp+Ts)/2; Z"9D1Uk  
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figure(2) Ix.Y_}  
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subplot(1,2,1); XNkZ^3mq  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) X> V`)  
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legend('R_p','R_s','R_n') CuYSvW  
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xlabel('\theta_i') NY%=6><t!  
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ylabel('Amplitude') Nj}-"R\u  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) LE+#%>z>  
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axis([0 90 0 1]) Y#oY'S .;y  
R5rCCp  
grid on ;TCT%j`^o  
jGKI|v4U(  
subplot(1,2,2); Wo/LrCg  
cG4$)q;q  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 90 pt'Jg  
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legend('T_p','T_s','T_n') d6g^>}-!t  
j.g9O]pi  
xlabel('\theta_i') Ehg(xK  
ka| 8 _C^z  
ylabel('Amplitude') Kfs|KIQ>=  
F'JceU  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) V?-OI>  
K7]+. f  
axis([0 90 0 1]) hv9k9i7@l  
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grid on b,-qyJW6  
Mzj|57:gx  
<iznB8@  
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2、光密射向光疏 l5CFm8%  
6@geakq  
clear 0m&W: c  
05/'qf7P,U  
close all
cP`[/5R  
\LQ54^eB  
n1=1.45,n2=1; v0'`K 5M  
f|'8~C5I@>  
theta=0:0.1:90; ;n;bap  
Kz2s{y~?  
a=theta*pi/180; #^eXnhj9  
*MZa|Xy  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); gP:H_nVh  
0XUWK@)P  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); }\/ 3B_X6N  
2mfKy9QxO  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); (|.rEaTA[1  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); pF
}WMt  
HMPb%'U~  
figure(1) /{*0 \`;  
C`r{B.t`GT  
subplot(1,2,1); TjLW<D(i>  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) ~Rk~Zn  
="__*J#nze  
legend('r_p','r_s','|r_p|','|r_s|') "6 \
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Eu1t*>ZL  
xlabel('\theta_i') u#~q86k  
YK6zN>M}E  
ylabel('Amplitude') B4 +A  
6PdLJ#LS  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) yHjuT+/wM,  
m9 D'yXZ  
axis([0 90 -1.5 1.5]) vvmG46IgZ  
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grid on d@e2+3<  
P1IL]  
subplot(1,2,2); \ICc?8oL  
$Z[W}7{pt#  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 'jj|bN  
t?;\'  
legend('t_p','t_s','|t_p|','|t_s|') [ F7ru4"{  
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xlabel('\theta_i') LMTz/M  
{?hpW+1,#  
ylabel('Amplitude') m*H' Cb  
} za"rU  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 9U]j@*QN  
5}NTqN0@  
axis([0 90 -0.5 3]) ['jr+gIfQ  
s>c0K@ADO  
grid on "#G`F  
?{rpzrc!*  
Rp=abs(rp).^2; wjc&S'[  
M~,N~ N1  
Rs=abs(rs).^2; gUHx(Fi[4  
iWp 6^g  
Rn=(Rp+Rs)/2; :hFKmoy#  
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Tp=1-Rp; p4^&G/'  
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Ts=1-Rs; _(:<l YaY  
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Tn=(Tp+Ts)/2; B<\HK:%{  
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figure(2) HvLx  
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subplot(1,2,1); fprP$MbI  
FL E3LH  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) 7Xf52\7n  
UAe8Ct=YJ  
legend('R_p','R_s','R_n') +sT S1t  
EFn[[<&><t  
xlabel('\theta_i') O b'Br
  
V_/.]zQA  
ylabel('Amplitude') Nk;ywC"e;  
TXo`P_SE  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 1\ Gxk&  
3nnoXc'  
axis([0 90 0 1]) W^YaC (I  
,{X}C  
grid on SZ1yy["  
m^gxEPJK  
subplot(1,2,2); SFR<T  
" 6ScVa5)  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) TyY%<NCIb  

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legend('T_p','T_s','T_n') _F
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xlabel('\theta_i') DM,)nh6'  
Y.kgJ #2  
ylabel('Amplitude') 6/6{69tnr  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) OJiw
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QJ+Ml  
axis([0 90 0 1]) mgMa)yc!dp  
A DVUx}  
grid on h43py8v  
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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

thanks

谢谢了楼主分享

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学习学习 L/r_MtN  

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