[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 _da>=^hFJ  
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1、光疏射向光密 O:WFh;c  
t=Tu-2,k  
clear pS;jrq I#  
z`]'~  
close all nJNdq`y2  
LS*^TA(I[  
n1=1,n2=1.45; 5Z,^46J  
Pl9/1YhD/  
theta=0:0.1:90; }>>lgW>n,;  
.|;`qUo  
a=theta*pi/180; .-Ggvw  
(%D*S_m'  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); VD#`1g<  
C AVqjT7  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); dUyit-  
x!"S`AM  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); -$!`8[fM  
[RTB|0Q  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); <sE0426
{  
HeCQF=
R  
figure(1) <p;cR` %uE  
;Z\jX[H  
subplot(1,2,1); -L}crQl.'c  
T1.
`*,t)=  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) `D6Bw=7  
X!Xl  
legend('r_p','r_s','|r_p|','|r_s|') "9:1>Gr{G  
T.]+T[}!  
xlabel('\theta_i') sluR@[l  
Ew~piuj  
ylabel('Amplitude') CA, &R<]  
' !>t( Sa  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) pj4M|'
F7  
I"eXoqh  
axis([0 90 -1 1]) icLf;@  
,#@B3~giC  
grid on sN.h>bd  
)o-rg  
subplot(1,2,2); I'%vN^e^  
x<W`2Du  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) !)FM/Xj,o  
f^\qDvPur  
legend('t_p','t_s','|t_p|','|t_s|') ~ x- R78'  
t`1E4$Bb\  
xlabel('\theta_i') WB<_AIt+  
B/hL  
ylabel('Amplitude') yu"enA  
{p@uH<)  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ~vgm;O  
8(J&_7u  
axis([0 90 0 1]) q'{LTg0kk  
hY XH9:  
grid on ~Q}JC3f>  
+dIDFSd  
Rp=abs(rp).^2; pVbgjJI  
B
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Rs=abs(rs).^2; _PUgK\  
hDTiXc  
Rn=(Rp+Rs)/2; N'[bA  
)D?\ru H  
Tp=1-Rp; X;25G  
mv
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Ts=1-Rs; t4>%<'>e  
%5.aC|^}  
Tn=(Tp+Ts)/2; XG2&_u&  
%v 0 I;t  
figure(2) r6k0=6i  
BBnW0vAZ*  
subplot(1,2,1); PEqO<a1Z8  
s}yJkQb  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) |eH>55 b  
g#b[-)Qx  
legend('R_p','R_s','R_n') rK 9  
[
^sv.  
xlabel('\theta_i') v%N/mL+5L  
`D)ay  
ylabel('Amplitude') V8AF;1c?-'  
yO}RkRA  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 2E]SKpJ  
&%3$zgvR  
axis([0 90 0 1])  Z
|zyO-  
M->/vi  
grid on pZ4]KxX@  
Gd^K,3:. T  
subplot(1,2,2); `R:p-"'b  
d#~^)r  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 4-lG{I_S:  
?M2#fD]e  
legend('T_p','T_s','T_n') n27df9L  
ch2Qk8  
xlabel('\theta_i') 8$Igo
$U-  
eteq Mg}M  
ylabel('Amplitude') FtBYPSGz  
0sxZa+G0o  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) g )H>Uu5@  
Cm)_xnv  
axis([0 90 0 1]) yL =*yC  
H"v3?g`S%  
grid on oy+``W~  
A4!IbJD,0  
0XwDk$l<  
&n:3n  
NyHHK8>  

2、光密射向光疏 ^a9v5hu  
zk)9tm;i{  
clear F_8< tA6  
}jj@A !N  
close all $L|YllD%  
8<cD+Jtj  
n1=1.45,n2=1; %;5AF8#c  
S;0,UgB
1  
theta=0:0.1:90; SSi-Z  
UclQo~3  
a=theta*pi/180; U}
9B wr^  
^4jIT1  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); <@;Y.76~  
b"`Vn,  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); QBi&Q%piy  
"wk~[>  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); [c6I/U=-  
%lL^[`AR  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); OKDBzl  
%m8;Lh-X  
figure(1) $s]c'D)  
RS`]>K3t  
subplot(1,2,1); TF)OBN~/  
caA>; +aBH  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) \Qp #utC0s  
l.tNq$3pS  
legend('r_p','r_s','|r_p|','|r_s|') n0o'ns  
g.CUo:c  
xlabel('\theta_i') !E\xn^  
C^uH]WO  
ylabel('Amplitude') :5/P{Co(  
rh;@|/<l  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) NL})_.Og  
6
#NptXB  
axis([0 90 -1.5 1.5]) kYxb@Zn=|  
qPgLSZv  
grid on  T~I5W=y  
{Vz.| a[T  
subplot(1,2,2); K]mR9$/  
:*GLLjS;  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) J\iyc,M<M  
3?Ckk{)&  
legend('t_p','t_s','|t_p|','|t_s|') YyR)2j1O  
'qRK6}"T  
xlabel('\theta_i') bv&A)h"S  
EYc, "'  
ylabel('Amplitude') OLAwRha  
AF5$U
8jf  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ZVo%ssVt  
_*b1]<  
axis([0 90 -0.5 3]) JX_hLy@`  
P19nF[A  
grid on p"9
a`/  
i#I+    
Rp=abs(rp).^2; &V;^xMO!  
xpo<1Sr>S  
Rs=abs(rs).^2; klC;fm2C  
5@3[t`n'  
Rn=(Rp+Rs)/2; imcq H  
oiP8~  
Tp=1-Rp; S4RvWTtQV  
0i}4T:J@`  
Ts=1-Rs; Rpit>  
_is<.&f6  
Tn=(Tp+Ts)/2; 3`@alhD'  
f&+=eUp  
figure(2) N>z<v\
`  
Do@:|n  
subplot(1,2,1); "bF
t+N  

A^+G w\  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) J[9yQ  
=ogzq.+|  
legend('R_p','R_s','R_n') bH}6N>Fp  
[jl'5ld  
xlabel('\theta_i') =j[zMO  
YxH"*)N  
ylabel('Amplitude') h>v;1QO9D  
wN,DTmtD  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) K5U=%z  
@fR^":.h  
axis([0 90 0 1]) y7#$:+jQv  
M7"I]$|\  
grid on =|IB=  
k$</7IuH  
subplot(1,2,2); %OWLM  
#W#GI"K  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) Pf s_s6  
jbQ2G|:Q  
legend('T_p','T_s','T_n') J%']t$AR  
T1bPI/  
xlabel('\theta_i') H!U\;ny  
]_NN,m>z  
ylabel('Amplitude') l1^/Q~u  
XWvT(+J  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 4`@]jm  
eCB(!Y|  
axis([0 90 0 1])

%=x|.e@J  
*<*{gO?Q4
 
grid on -|^}~yOx0=  
usiv`.  
Dt,b\6  
5Cxh>,k  

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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谢谢了楼主分享

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