[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 *PV7s  
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1、光疏射向光密 jO5R~O`  
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clear ks6iy}f7  
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close all G4P*U3&p  
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n1=1,n2=1.45; y!}XlllV  
1 I.P7_/  
theta=0:0.1:90; E`(=n(Qu  
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a=theta*pi/180; UcD<vg"p  
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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)); lw}7kp4 2F  
(!N2,1|  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 6| o S 5  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); RXcN<Y&  
j$XaO%y)  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); <%%)C>l  
ma@V>*u  
figure(1) [kqtkgK$j2  
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subplot(1,2,1); &fWC-|  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) <]KQ$8dtD  
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legend('r_p','r_s','|r_p|','|r_s|') yp^k;G?_d  
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xlabel('\theta_i') tJ6Q7 J;n  
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ylabel('Amplitude') +[MHl  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) IvkYM`%  
1:^Xd~X  
axis([0 90 -1 1]) #\}FQl6  
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grid on V>Z4gZp5sc  
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subplot(1,2,2); z#PaQ
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 3<M yb  
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legend('t_p','t_s','|t_p|','|t_s|') F:P2:s<d-  
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xlabel('\theta_i') YG8C<g6E7  
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ylabel('Amplitude') eIF6f& F  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) /Mw;oP{&b  
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axis([0 90 0 1]) N*$GP3]  
ys`oHSf  
grid on hF@%k ;I  
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Rp=abs(rp).^2; g~.#.S ds  
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Rs=abs(rs).^2; bfoTGi  
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Rn=(Rp+Rs)/2; et)n`NlcK  
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Tp=1-Rp; : Bo
  
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Ts=1-Rs; ]*mUc`  
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Tn=(Tp+Ts)/2; |,oLZCNa  
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figure(2) fi*b]a\'  
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subplot(1,2,1); |X A0F\  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) $<2d|;7r  
g&F$hm  
legend('R_p','R_s','R_n') a$Ud"  
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xlabel('\theta_i') &}P#<"Fo8Q  
2/V%jS[4#y  
ylabel('Amplitude') ?G',Qtz<K  
y3 N[F  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) x X3I`  
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axis([0 90 0 1]) z{w %pUn}  
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grid on 
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subplot(1,2,2); :fL7"\ pf~  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) [@VzpVhXz  
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legend('T_p','T_s','T_n') hLZfArq}  
^1Fzs(#.  
xlabel('\theta_i') BRY/[QRqZ  
><"|>(y  
ylabel('Amplitude') zo"L9&Hzo  
juF=ZW%i  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 8g_kZ^<[  
b?iPQ$NyQ  
axis([0 90 0 1]) jG{?>^
 
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grid on #>:S&R?2t  
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2、光密射向光疏 l(Hz9  
#=y)Wuo=  
clear nxuH22:  
.kuNn-$  
close all 7@gH{p1  
mpk+]n@  
n1=1.45,n2=1; N3#^Ifn[  
)mN/e+/Lu  
theta=0:0.1:90; aizws[C  
_>`9]6\&  
a=theta*pi/180; Yh!k uS#<  
[6g$;SicT  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); T'l
ycc4~a  
cjGN=|`u  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); C"5P7F{  
q~aj"GD  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); @.k^ 8hc  
yId1J  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 85dC6wI4K  
v36Z*I6)5  
figure(1) |LLpG37_  
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subplot(1,2,1); o58c!44  
29Gel  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) `q^qe>'  
(AjgLNB  
legend('r_p','r_s','|r_p|','|r_s|') YhRy C*b  
K^"l.V#J  
xlabel('\theta_i') w]h8KNt  
YSPUQ  
ylabel('Amplitude') =w!9:I&a0  
I<<1mEk  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) #d[Nm+~ko  
wS,fj gX  
axis([0 90 -1.5 1.5]) SFwY%2np)!  
P$y'``  
grid on z8kebS&5  
[+A]E,pv]1  
subplot(1,2,2); m0.g}N-w  
bnvY2-O6  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) nLk`W"irM  
J_yXL7d  
legend('t_p','t_s','|t_p|','|t_s|') 54WX#/<Yik  
/TB{|_HbW  
xlabel('\theta_i') [P~7kNFOh  
Jh%SenP_oP  
ylabel('Amplitude') /!>OWh*~  
cotySio$  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Bnwq!i!M  
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axis([0 90 -0.5 3]) *a8<cf  
^gyI-S(;  
grid on RTg\c[=w  
2-UD^;0  
Rp=abs(rp).^2; {!?M!/d  
v/~&n  
Rs=abs(rs).^2; 'ks .TS&  
|XNw&X1VF  
Rn=(Rp+Rs)/2; )J+OyR=  
.X.6<@$  
Tp=1-Rp; x7gd6"10^  
:nl,Ac  
Ts=1-Rs; yeIS}O  
UNv!G/i-5  
Tn=(Tp+Ts)/2; csJ)Pt?d  
jbT{K|d-  
figure(2) |-*50j l  
y>h9:q|  
subplot(1,2,1); J2oh#TGp  
?0sTx6x@  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) ;[P>  
2g_mQT  
legend('R_p','R_s','R_n') X$Q.A^9  
:p)^+AF"5  
xlabel('\theta_i') vQ2{+5!|  
,|zzq@fk  
ylabel('Amplitude') hG<[
F@d
 
V)5,E>;EN  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) P&[&Dj  
o
F_rC[  
axis([0 90 0 1]) km^ZF<.@  
>@?mP$;=  
grid on G*%U0OTi  
IW@phKz  
subplot(1,2,2); <:nyRy}  
Tw*p^rU  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) G[_Z|Xi1  
8 ?y|  
legend('T_p','T_s','T_n') &~B8~U4%  
+`mI\+y,  
xlabel('\theta_i') *h).V&::O  
!5[SNr3^  
ylabel('Amplitude') Sj/v:  
Z1$U[Tsd  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) o.zP1n|G~r  
Bzt:9hr6BO  
axis([0 90 0 1]) ywyg(8>zE  
EASmB  
grid on xA2I+r*o  
S+t2k&pm  
3q@JhB  
^k^?>h  

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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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谢谢了楼主分享

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