[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 G0*$&G0nb  
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1、光疏射向光密 54}s:[O  
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clear I|R9@  
TD3R/NP  
close all J::SFu=  
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n1=1,n2=1.45; \*_a#4a  
T@Q.m.iV4  
theta=0:0.1:90; r2&{R!Fj`  
8@$QN4^u^  
a=theta*pi/180; $6oLiYFX;  
5Vvy:<.la  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); LQ{4r1,u]  
}l[t0C t  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); g" M1HxlV  
a<\m` Es=  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 1y?TyUP  
CF>NyY:_  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); ?NHh=H\7u  
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figure(1)  %gf8'Q  
mX2Qf8  
subplot(1,2,1); {=R=\Y?r&  
8H{@0_M  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) LTa9' q0  
v.Q)Obyn  
legend('r_p','r_s','|r_p|','|r_s|') ^rxXAc[  
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xlabel('\theta_i') @7BH`b$)!  
da2BQ;  
ylabel('Amplitude') bo@1c0  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Crey}A/N  
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axis([0 90 -1 1]) )I5f`r=Ry  
rP>5OLP  
grid on *np%67=jO  
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subplot(1,2,2); _ :][{W#  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) ;>Kxl}+R  
f:BW{Cij;y  
legend('t_p','t_s','|t_p|','|t_s|') lual'~  
Zo&U3b{Dy  
xlabel('\theta_i') CP={|]>+S  
9vVYZ}HC  
ylabel('Amplitude') jNB-FVaT  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) fM8 :Nt$  
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axis([0 90 0 1]) W;hI[9  
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grid on ?N`W,  
b)`<J @&{  
Rp=abs(rp).^2; 8# 9.a]AX  
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Rs=abs(rs).^2; R2r0'Yx  
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Rn=(Rp+Rs)/2; -1U]@s  


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Tp=1-Rp; '5{gWV`  
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Ts=1-Rs; |*8 J.H*r  
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Tn=(Tp+Ts)/2; $e0sa=/  
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figure(2) k2O==IG]
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subplot(1,2,1); 6LUB3;g7  
M<Eg<*  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) l$z-'  
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legend('R_p','R_s','R_n') 0 5 `x$f  
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xlabel('\theta_i') |nv8&L8  
wl}Q|4rZ  
ylabel('Amplitude') +AXui|mn  
6$`8y,TMSt  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) hoPCbjkov  
3rOv j&2  
axis([0 90 0 1]) o
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9'T nR[>  
grid on BK6oW3wD/  
 rfoLg  
subplot(1,2,2); %~G)xK?W*  
l8jm7@.E  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) &@nI(PXv  
W!htCwnkF  
legend('T_p','T_s','T_n') kOeW,:&65  
!$Nh:(>:  
xlabel('\theta_i') Wc#4%kT  
1;S@XC>  
ylabel('Amplitude') 7oK!!Qd^
w  
"){"{~  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) arRbq!mO  
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axis([0 90 0 1]) E%2]c?N5  
qy/xJ>:  
grid on kpLDK81I  
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3Vs8"BFjz  
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2、光密射向光疏 +0_e a~{  
-U.>K,M  
clear Qzt'ZK  
x+EkL3{  
close all u%!/-&?wF  
L7;8:^ v  
n1=1.45,n2=1; :m]H?vq] \  
aS=-9P;v  
theta=0:0.1:90; v
hIZkz!9  
Ra)wlIx  
a=theta*pi/180; ^m~&2l\N=  
t-B5,,`  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); %D1 |0v8}  
70Jx[3vr  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); :e/*5ix  
fG
9 ;7KG  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); `Y O(C<r-  
0xVw{k}1U  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); =g
NPS0H  
,.9k)\/V  
figure(1) /9ctmW1!<  
>m]LV}">O  
subplot(1,2,1); 5C0![$W>  
`>)[UG!:|  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) ttOk6-  
]-8WM5\qJM  
legend('r_p','r_s','|r_p|','|r_s|') e[ yN  
`6$|d,m5  
xlabel('\theta_i') V56WgOBxz  
UodBK7y  
ylabel('Amplitude') p<1y
$=zS  
NNt n  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) qG@YNc  
3ew4QPT'  
axis([0 90 -1.5 1.5]) {ET
M >  
HS[($  
grid on ]Hp>~Zvbb  
p8Z?R^$9H  
subplot(1,2,2); ?iZ2sRWR6  
e:%|.$4OG  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) jc!m; U t  
27k(`{K  
legend('t_p','t_s','|t_p|','|t_s|') >-w
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o^XDG^35`  
xlabel('\theta_i') Kv<f<>|L  
p^CTHk_|  
ylabel('Amplitude') ? D _kQl  
G4uG"  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) wBcoh~ (y  
W1 k]P.  
axis([0 90 -0.5 3]) Aa=:AkrH  
rtS' 90`  
grid on nl qn:[BU  
NMe{1RM  
Rp=abs(rp).^2; w lH\w?  
(`S^6-^  
Rs=abs(rs).^2; om`T/@_,  
')U~a  
Rn=(Rp+Rs)/2; XEQTTD<  
Jy5sZ}t[  
Tp=1-Rp; baBBn%_V  
B*N1)J\5  
Ts=1-Rs; jMgXIK\  
Hs*["zFc  
Tn=(Tp+Ts)/2; ,Cb3R|L8  
#
8|LPfA  
figure(2) ?u|@,tQ[  
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4O;*@  
subplot(1,2,1); =}vT>b
  
odCt6Du  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) ^cm] [9  
Xx"<^FS[zC  
legend('R_p','R_s','R_n') .^?zdW  
CmZayV  
xlabel('\theta_i') 1h&`mqY)L.  
n:,mo}?X  
ylabel('Amplitude') t N{S;)q#X  
;$QC_l''b  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) b,Oh8O;>  
qx t0Jr8  
axis([0 90 0 1]) ")T\_ME  
yd).}@  
grid on hq)1YO  
{%f{U"m  
subplot(1,2,2); /]_t->  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) /'+>/  
MKl0 d  
legend('T_p','T_s','T_n') $VuXr=f}  
t:2v`uk  
xlabel('\theta_i') f#\YX tR,k  
)h8}{*  
ylabel('Amplitude') "2l`XH  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Upe}9
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qhEv6Yxfw6  
axis([0 90 0 1]) 0f^{Rp6  
iRzFA!wH  
grid on |_V(^b}  
A*EOn1hN  
%2?+:R5.  
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