[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 @*MC/fe  
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1、光疏射向光密 Jq ]:<TQ  
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clear AW,OHSXh6  
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close all p'n4)I2#  
8' K0L(3[  
n1=1,n2=1.45;  npp[@*~  
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theta=0:0.1:90; R}:KE&tq  
s%pfkoOY%  
a=theta*pi/180; k+^'?D--'P  
~D[?$`x:  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); ]3Dl)[R   
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rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2));
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8K9$,Ii  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); tMp=-"  
%XTcP2pRJ  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); E7zm{BX]  
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figure(1) 3WY$WRv  
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subplot(1,2,1); Avlz=k1*  
<spZ! #o  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) lb*8G  
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legend('r_p','r_s','|r_p|','|r_s|') F^k.is  
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xlabel('\theta_i') x]|+\1  
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ylabel('Amplitude') sZ<9A Xk-E  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) fV:4#j  
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axis([0 90 -1 1]) k0-G$|QgIp  
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grid on $,>@o=)_  
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subplot(1,2,2);
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) (b,[C\RBF  
llV3ka^!  
legend('t_p','t_s','|t_p|','|t_s|')
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xlabel('\theta_i') 6 15s5ZA  
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ylabel('Amplitude') xVL5'y1g B  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) NcPgq?3p  
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axis([0 90 0 1]) ^u}L;`L  
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grid on 5}$b0<em~  
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Rp=abs(rp).^2; K_?W\Yg   
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Rs=abs(rs).^2; Eodn/  
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Rn=(Rp+Rs)/2; bwM@/g%DL  
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Tp=1-Rp; OA/WtQ5  
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Ts=1-Rs; ?{w3|Ef&  
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Tn=(Tp+Ts)/2; uXDq~`S  
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figure(2) Z[\O=1E,  
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subplot(1,2,1); VhjM>(  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) o&AM2U
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P&m\1W(  
legend('R_p','R_s','R_n') R8rfM?"W  
cLPkK3O\=  
xlabel('\theta_i') t5)+&I
2  
oI)GKA_Ng7  
ylabel('Amplitude') 'XY`(3q  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) +dA,P\  
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axis([0 90 0 1]) `(A5f71MfM  
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grid on b=~i)`  
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subplot(1,2,2); H$G0`LP0/a  
n,$IfC"  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) A)%A!  
V=fEPM  
legend('T_p','T_s','T_n') mUS_(0q  
:qChMU|Y6  
xlabel('\theta_i') \U|ZR  
x(<(t:?o  
ylabel('Amplitude') #Z6'?p9  
CPg+f1K  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) dlhdsj:  
Z|%_oR~b|  
axis([0 90 0 1]) EkGQ(fZ1|  
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grid on nqwAQhzy(  
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2、光密射向光疏 Qg6W5Hc  
rj6#
1kt  
clear tK&'<tZh  
dnj}AVfQx  
close all _E@:O+K  
vDH>H^9Y  
n1=1.45,n2=1; ^h{)Gf,+\  
'Ysx=  
theta=0:0.1:90; ~ o1x;Y6  
x' .:&z  
a=theta*pi/180; Qx[t/~  
C+|b1/N-  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); ?JL:CBvCp  
i86>]  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); A45A:hqs  
ei rzYt  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); wC5ee:u C%  
Y5F]:gs@  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); _6wFba@>/n  
w: >5=mfk  
figure(1) +|tC'gCnV  
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subplot(1,2,1); ?2>FdtH  
nxr!`^Mne  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) ;pnD0bH  
jAud {m*T  
legend('r_p','r_s','|r_p|','|r_s|') /{|fyKo\?  
Zfy
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xlabel('\theta_i') QcgfBsv96  
.w]GWL  
ylabel('Amplitude') < P`u}  
)KP5WudX  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) F+@5C:<?  
'3?\K3S4i  
axis([0 90 -1.5 1.5]) :H c0b=  
!%c'$f/  
grid on Ox@sI:CT  
3\X
bmq8}  
subplot(1,2,2); w+N> h;j  
3"O>&Q0c  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) Aj0Tfdxy  
Q9Q|lO  
legend('t_p','t_s','|t_p|','|t_s|') og0*Nt+  
VqS#waNrx  
xlabel('\theta_i') |_yYLYH'   
aJcf`<p  
ylabel('Amplitude') HQB(*  
D&S26jrZ  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) &o<F7U'R  
6,9o>zT%H  
axis([0 90 -0.5 3]) ^.>jGI%rB  
-Y='_4s  
grid on 1CHeufQ  
HcqfB NM  
Rp=abs(rp).^2; $H-!j%hV  
[/X4"D-uOK  
Rs=abs(rs).^2; SXy=<%ed  
AW,53\ 0  
Rn=(Rp+Rs)/2; 6qaulwV4t  
3JVK  
Tp=1-Rp; fXcm|U,ho  
:duo#w"K  
Ts=1-Rs; Yboiwy,n  
MX@_=Sp-  
Tn=(Tp+Ts)/2; VP6Zi
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,%)6jYHRw  
figure(2) f{FDuIln  
ObiT-D?)g  
subplot(1,2,1); -UD\;D?$  
rf$X>M=G  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) 3.qTLga|}  
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legend('R_p','R_s','R_n') 7R\oj
8[  
.<Zy|1 4  
xlabel('\theta_i') =X.9,$Y  
Cm\6tD  
ylabel('Amplitude') >>5NX"{  
kbMYMx.[  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) QPfc(Z  
>2Kh0rIH  
axis([0 90 0 1]) PoT`}-9  
Mv6-|O  
grid on v_nj$1dY6  
y8rm  
subplot(1,2,2); 8f3vjK'  
J52 o g4l  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) :at$HCaK  
Ba/Yl  
legend('T_p','T_s','T_n') ~>+]%FPv  
Yx>"bv  
xlabel('\theta_i') iV eC=^1  
.Fa4shNV  
ylabel('Amplitude') $]A/ o(  
,.qMEMm  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) b%S62(qP  
1hziXC0WY  
axis([0 90 0 1]) 'FS?a  
`IY/9'vT  
grid on l!g]a2x*  
1rDqa(7  
[NTtz <i@  
6%VV,$p  

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

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