[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 BP4vOZ0$  
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1、光疏射向光密 q?L*Luu+  
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clear qPhVc9D#  
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close all WFS6N.Ap  
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n1=1,n2=1.45; `<Hc,D; p  
SxC(:k2b;  
theta=0:0.1:90; Kj6+$l  
AJRiwP|H+  
a=theta*pi/180; td#m>S  
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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)); YsO`1D  
>S?7-2X  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); ?:zMrlX  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); eMH\]A~v"  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); [~Z#yEiW^  
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figure(1) \D[~54  
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subplot(1,2,1); -**fT?n  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) h 'is#X 6:  
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legend('r_p','r_s','|r_p|','|r_s|') H"2,Q T  
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xlabel('\theta_i') mFIIqkUAL  
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ylabel('Amplitude') kaC
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) b|`  
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axis([0 90 -1 1]) .+^o{b  
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grid on RWn#"~  
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subplot(1,2,2); HsK52<  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 9x9E+DG#(  
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legend('t_p','t_s','|t_p|','|t_s|') b55G1w  
%,)Xi  
xlabel('\theta_i') 8ZO~=e  
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ylabel('Amplitude') %E2C4UbY  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) i{>YQ  
WF<*rl  
axis([0 90 0 1]) /bqJ6$  
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grid on OL#RkD  
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Rp=abs(rp).^2; '}NH$ KA  
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Rs=abs(rs).^2; N{zou?+  
Aj=c,]2  
Rn=(Rp+Rs)/2; 2?owXcbx  
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Tp=1-Rp; SCMZ-^b  
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Ts=1-Rs; %w6lNl  
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Tn=(Tp+Ts)/2; k8"[)lDc.  
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figure(2) (%;D& ~%o  
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subplot(1,2,1); 6~q"#94  
CB?H`R pC.  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) :y[tZ&*<_?  
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legend('R_p','R_s','R_n') 2c<phmiK  
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xlabel('\theta_i') Jz\'%O'  
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ylabel('Amplitude') &Lgi  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) BLhuYuON  
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axis([0 90 0 1]) LIHf]+  
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grid on cj/FqU"  
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subplot(1,2,2); :YZMRJL
 
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) c}FZb$q#  
:dzamHbX9  
legend('T_p','T_s','T_n') <$ Ar*<,6  
c^8y/wfok  
xlabel('\theta_i') }' t*BaU  
(wIpq<%  
ylabel('Amplitude') [VP~~*b  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) NASRr   
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axis([0 90 0 1]) =>6'{32W_  
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grid on ,*Yu~4  
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2、光密射向光疏 @vaK-&|#$  
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clear eg-,;X#  
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n/{J  
close all D[)g-_3f6<  
X] &Q^  
n1=1.45,n2=1; rr#&0`]  
[x5T7=  
theta=0:0.1:90; yA!#>u%g  

vd9><W  
a=theta*pi/180; *#,wV  
g Xvuv^  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); ND7 gxt-B  
FHI`/  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); j']m*aM1>  
B&yb%`9],W  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); _*+ 7*vAL  
cSBYC_LU  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); (yCFpb  
[=-?n6  
figure(1) 5/Q^p"  
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subplot(1,2,1); 5dS5,  
R$=UJ}>  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) &gZ5dTj>  
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2  
legend('r_p','r_s','|r_p|','|r_s|') |jniI(  
%9xz[Ng  
xlabel('\theta_i') RJ1Q.o  
)G0a72  
ylabel('Amplitude') wz5xJ:Tj  
E3y"  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) m0W5Ogk  
7%9Sz5z  
axis([0 90 -1.5 1.5]) w9h\J#f  
w3c[t~R8  
grid on /z*?:*  
#z)@T  
subplot(1,2,2); h84}lxT^]  
'QjX2ytgX  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) z{cIG8z  
cTFyF)  
legend('t_p','t_s','|t_p|','|t_s|') AS[
cz! >  
a1Qg&s<  
xlabel('\theta_i') ;-47d ^  
}| _uqvin  
ylabel('Amplitude') ,Utp6X  
it!8+hvq9*  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) %zyO}  
~fn2B  
axis([0 90 -0.5 3]) H3}{]&a  
'Uew(o  
grid on [J0L7p*6  
Funep[rA  
Rp=abs(rp).^2; 1"009/|  
nM1U=Du  
Rs=abs(rs).^2; ? r=cLC  
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Rn=(Rp+Rs)/2; a%7ju4CVj  
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Tp=1-Rp; agN`) F!  
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Ts=1-Rs;  z@^l1)m  
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Tn=(Tp+Ts)/2; /Ws@YP  
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figure(2) 8'_>A5L/C  
tWD~|<\. )  
subplot(1,2,1); 5zX;/n~  
7\'vSHIL  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) ` ZXX[&C  
Xz&Hfs"/J  
legend('R_p','R_s','R_n') [s"3g\L';  
5bR;R{:x  
xlabel('\theta_i') )V%xbDdS  
IL?3>$,  
ylabel('Amplitude') 0F6^[osqtl  
7-.YVM~R  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) E$; =*0w  
:O)\v!Z  
axis([0 90 0 1]) MbC7`Sp&i  
&/}]9 #  
grid on _ro^<V$%  
}x`W+r  
subplot(1,2,2); G2U=*|  
W)ihk\E  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) V03U"eI="  
>_(Xb%w  
legend('T_p','T_s','T_n') B1oi]hDy  
: I28Zi*  
xlabel('\theta_i') r4k=i
4  
Nt9M$?\P  
ylabel('Amplitude') ByoSwQ  
\:]Clvc  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) }$s#H{T!  
RrRrB"!8nR  
axis([0 90 0 1]) p<*3mbgGO  
OACRw%J:X{  
grid on u;p{&\(]  
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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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