[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 g}1B;zGf  
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1、光疏射向光密 (x;@%:3j$  
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clear UGV+/zxIM  
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close all 2*laAB
 
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n1=1,n2=1.45; a%JuC2  
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theta=0:0.1:90; ?BeiY zg  
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a=theta*pi/180; ?N*>*"  
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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)); 9
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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)); yg<R=$n,Q  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); `EA\u]PwQ  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); `ts$(u.w  
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figure(1) #wwH m3  
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subplot(1,2,1); X!TpYUZ'  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) c_$=-Khk  
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legend('r_p','r_s','|r_p|','|r_s|') $]/{[@5  
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xlabel('\theta_i') ZB= E}]v6  
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ylabel('Amplitude') /L g)i\R;  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) p_gm3Q  
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axis([0 90 -1 1]) XPXIg  
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grid on {T$9?`h~M  
q_[o"wq/  
subplot(1,2,2); G:<aB  
k_#ak%m/  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) ]g3JZF-  
{I%cxQ#y  
legend('t_p','t_s','|t_p|','|t_s|') gV's=c
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xlabel('\theta_i') F]O`3e=!  
C2kPMB=Xo  
ylabel('Amplitude') g*AWE,%=|  
#jvtUS\  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) yLvDMPj  
jp%S3)  
axis([0 90 0 1]) ;WQve_\  
2`K=Hby  
grid on <44G]eb  
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Rp=abs(rp).^2; y%cP1y)  
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Rs=abs(rs).^2; z\W64^'"Z  
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Rn=(Rp+Rs)/2; Rsm^Z!sn  
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Tp=1-Rp; 7;(`MIFXs  
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Ts=1-Rs; ~!d\^Z
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Tn=(Tp+Ts)/2; l_d5oAh   
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figure(2) K\Wkoi5  
"%w u2%i  
subplot(1,2,1); 0Th&iA4  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) c7k~S-nU  
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legend('R_p','R_s','R_n') )mT<MkP  
rglXs  
xlabel('\theta_i') .uZ3odMlx  
}o(-=lF  
ylabel('Amplitude') r#p9x[f<Y  
1.GQau~  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) )Nw8O{\  
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axis([0 90 0 1]) g*_&  
BX7kO0j  
grid on zwjgE6  
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subplot(1,2,2); 6%_nZvRv  
!*N@ZL&X  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) uo8YP<q  
KkbDW3-  
legend('T_p','T_s','T_n') X.{S*E:$u  
^6V[=!& H  
xlabel('\theta_i') 7`'Tbp  
|/{=ww8|  
ylabel('Amplitude') oD.Cs'  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) :DNY7TvZ  
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axis([0 90 0 1]) u&7[n_  
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grid on m-#2n? z-  
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2、光密射向光疏 %*}(}~  
UP,c|  
clear DB}eA N/  
u'BaKWPS  
close all _q-*7hCQ`  
jNk%OrP]  
n1=1.45,n2=1; i8]S:49  
SwMc pNo  
theta=0:0.1:90;  2JBR)P  
S<Xf>-8w  
a=theta*pi/180; }pkzH'$HJ  
( a#BV}=  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); &F~T-i>X  
KbeC"mi  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); H/M@t\$Dc  
vdwsJPFbc  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); H4+i.*T#  
6=Otq=WH  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); Y}wyw8g/  
=UWI9M*sz  
figure(1) 4o[{>gW  
o66}yJzmD  
subplot(1,2,1); WH^%:4  
8Zd]wYO  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) + {'.7#  
,z=LY5_z)  
legend('r_p','r_s','|r_p|','|r_s|') _H@DLhH|=  
6D3B^.rj]  
xlabel('\theta_i') j0q&&9/Jj  
H<+TR6k<  
ylabel('Amplitude')
9hyn`u.  
Iu=(qU  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Jln:`!#fDf  
AA>P`C$&M  
axis([0 90 -1.5 1.5]) c7H^$_^=  
U]rRQ d/:;  
grid on `Urhy#LC  
!j-Z Lq:;  
subplot(1,2,2); 4#Jg9o   
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) d&>^&>?$zh  
^S; -fYW2  
legend('t_p','t_s','|t_p|','|t_s|') xyXa .  
,PDQzJY  
xlabel('\theta_i') I7]8Y=xf  
gs`q6f%(  
ylabel('Amplitude') .T`%tJ-Em  
E!F^H^~$8  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) #KvlYZ+1  
r<$y=B  
axis([0 90 -0.5 3]) gjlx~.0d  
CTmT@A{  
grid on Dw"\/p:-3  
r9XZ(0/p  
Rp=abs(rp).^2; |DwZ{(R"W  
 rPm x  
Rs=abs(rs).^2; #<x
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BTxrp  
Rn=(Rp+Rs)/2; t6t!t*jO  
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Tp=1-Rp; noj0F::m`j  
lU]nd[x  
Ts=1-Rs; 4<v&S2Yq  
x?<FJ"8"k  
Tn=(Tp+Ts)/2; 8zb/xP>  
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%5y#  
figure(2) !VzC&>'v^9  
"J1 4C9u   
subplot(1,2,1); 1\.pMHv/  
w32y3~  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) ~VB1OLgv#.  
1Z&(6cDY8M  
legend('R_p','R_s','R_n') : rVnc =k  
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xlabel('\theta_i') ,]D,P  
19] E 5'AI  
ylabel('Amplitude') }-2|XD%]  
s#GLJl\E_P  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)])  0+8e,  
}QmqoCAE~m  
axis([0 90 0 1]) MqMQtU9w  
1 -b_~DF  
grid on pK4)yu+  
H,NF;QPPC  
subplot(1,2,2); Alq(QDs  
A=>u 1h69  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) uw8f ~:LT  
p K$`$H
 
legend('T_p','T_s','T_n') v` r:=K  
5IG-~jzCLb  
xlabel('\theta_i') 5-A\9UC*@  
'hf8ZEW9'  
ylabel('Amplitude') "wc<B4"  
I`#JwMU;m  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) o !7va"  
e:W{OIz:  
axis([0 90 0 1]) yh=N@Z*zP  
fB,_9K5i  
grid on *lb<$E]="!  
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K> e7pu  
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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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