[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 C9gF2ii|?  
z+wV(i97  
1、光疏射向光密 8"oS1W  

5 Nl>4d`  
clear q n=6>wP  
rZJp>Q)s  
close all uAVV4)  
xBB:b\  
n1=1,n2=1.45; \hi{r@
k>}  
T]CvfvO
5  
theta=0:0.1:90; 14oD^`-t  
aMv  
a=theta*pi/180; }[AIE[  
]NTHit^EX  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); %NeKDE  
Hd;>k$B  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); HD=WHT&  
K\?vTgc(  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); ?)]sfJG  
]t(g7lc}U  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); j{p0yuZ)<  
/^4)V8D_S  
figure(1) !o*oT}6n  
X+&@$v1  
subplot(1,2,1); ld9zOq  
ShCAkaj_  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) _9L2JN$R6  
vja^O  
legend('r_p','r_s','|r_p|','|r_s|') x!I7vs~~zW  
rycscE4,  
xlabel('\theta_i')
.Z/"L@  
dr9I+c7
u  
ylabel('Amplitude') UKX'A)$  
>Pv%E  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) !*CL>}-,  
+?mZ_sf8w  
axis([0 90 -1 1]) Q8\Ks|u]  
\9ap$  
grid on zaoZCyJT%  
M.|hnGXN  
subplot(1,2,2); VLQfuh;  
oxGOn('  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) ?5/Sa  
WBC'~h<@  
legend('t_p','t_s','|t_p|','|t_s|') $]Fe9E?   
#}k^g:l1  
xlabel('\theta_i') "h:xdaIE/p  
?+5K2Zk  
ylabel('Amplitude') u!g<y  
J+z0,N[  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 8dL(cC  
H 5sj% v  
axis([0 90 0 1]) {0Leua  
gVZ~OcB!W  
grid on )0UQy#r  
$9hOWti  
Rp=abs(rp).^2; Cu/w><h)  
 Rl6E  
Rs=abs(rs).^2; Gc SX5c  
rJ<v1Yb  
Rn=(Rp+Rs)/2; L#NPt4Sz+  
:L\@+}{(c  
Tp=1-Rp; e%UFY-2  
~G"6^C:x  
Ts=1-Rs; !JrVh$K  
2abWIw4  
Tn=(Tp+Ts)/2; y;Dw%m  
>TtkG|/U-T  
figure(2) #kV=;(lq  
jUjQ{eT  
subplot(1,2,1); ((t8  
X0 %k`3  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) 'z+8;g.ekO  
]1p&*xX:Bj  
legend('R_p','R_s','R_n') r[~Km5  
=_v_#;h&  
xlabel('\theta_i') uWMAXGL  
>gVR5o  
ylabel('Amplitude') dq|z;,`  
A u(Ngq  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 8 Z#)Xb4  
h^[K= J  
axis([0 90 0 1]) - d>)  
Ym!Ia&n  
grid on ]A!Gr(FHQ  
*a+~bX)18  
subplot(1,2,2); <EpP;  
c t,p?[Q  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 3:);vh!  
{mueP6Gz@J  
legend('T_p','T_s','T_n') [n66ZY#U]  
}{9E~"_[  
xlabel('\theta_i') =">O;L.xj  
@gs Kb*,  
ylabel('Amplitude') HfmTk5|/  
j;<;?IW  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) f3*u_LO  
mDj:w#q  
axis([0 90 0 1]) =|uX?  
i' N  
grid on }R.cqk\qa^  
\Fc"Q@.u  
q=|>r n_  
@\[&_DZ  
HiVF<tN  

Thanks

学习学习 E}\^GNT  

学习学习

谢谢了楼主分享

thanks

谢谢了楼主分享

这个在《MATLAB在光学中的应用》这本书里都有

感谢楼主分享

2、光密射向光疏 "aB]?4  
h"#^0$f  
clear }\*dD2qNL}  
?n?Ep[D  
close all J@(*(oQb  
Gv?3}8Wp  
n1=1.45,n2=1; fHlmy[V+M  
3M+hjc.  
theta=0:0.1:90; 3/}=x<ui  
`r+e!o  
a=theta*pi/180; 9i,QCA  
+3]@0VM26;  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); /D 2v1  
i. `S0  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); Z&JW}''n|F  
"%qGcC
8  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); N$:[`,  
1i2jYDB"  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); q,0o:
nI  
-[0)n{AVvU  
figure(1) ldI;DoE#U1  
4K[U*-\"  
subplot(1,2,1); p`33`25  
rgu
C#Xt!4  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) y5|`B(  
W O|2x0K  
legend('r_p','r_s','|r_p|','|r_s|') ]/bf#&@g`k  
y?CEV-3+  
xlabel('\theta_i') 1 /7H` O?  
*oZBv4Vh   
ylabel('Amplitude') o
xHS7b  
:HMnU37m W  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 4SY]Q[  
i^Ep[3  
axis([0 90 -1.5 1.5]) Mm^o3vl  

RUYwDtC  
grid on f{^C+t{r  
AS
R"<]  
subplot(1,2,2); sW3-JA]  
MFiX8zwhx+  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) ;IXDZ#;  
N/qr}- 3z  
legend('t_p','t_s','|t_p|','|t_s|') `[VoW2CLH+  
g[q1P:I@W  
xlabel('\theta_i') \iSaxwU_  
6$9n_AS  
ylabel('Amplitude') w# ,:L)  
WnvuB.(@3  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) PG&@.KY  
3oE *86  
axis([0 90 -0.5 3]) M-T&K%/lW  
g=o)=sQd  
grid on \_De( p  
~y$B#.l  
Rp=abs(rp).^2; @Zjy"u  
J0C,KU(  
Rs=abs(rs).^2; O}Fp\"  
kNd[M =%  
Rn=(Rp+Rs)/2; ,Hch->?Og  
4g$mz:vo  
Tp=1-Rp; azS"*#r6}  
R1 hb-  
Ts=1-Rs; bF|j%If%  
2o
Gl"3/p  
Tn=(Tp+Ts)/2; -KCm#!  
&owBmpz  
figure(2) ?UcW@B{  
`.#e4 FBW  
subplot(1,2,1); ^z"90-V^  
YB*ZYpRVl  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) qyP@[8eH  
XB50>??NE  
legend('R_p','R_s','R_n') 2%rAf8=  
6wqq"6w  
xlabel('\theta_i') q/XZb@rt  
%a{cJ6P  
ylabel('Amplitude') m!$"-nh9  
HulN84  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) J2v=b?NE  
RI')iz?  
axis([0 90 0 1]) 8N'`kd~6[  
=L#tSa=M"  
grid on o/CSIvz1  
vMRM/.  
subplot(1,2,2); uV#/Lgw{M  
]O,!B''8k  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) T]Vh]|_s  
15)=>=1mR.  
legend('T_p','T_s','T_n') +s V$s]U  
V2^(qpM!  
xlabel('\theta_i') d-#MRl$rtK  
`-hFk88  
ylabel('Amplitude') xzyV|(  
6*A S4l  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) QDzFl1\
P  
Y 'Yoc  
axis([0 90 0 1]) so9h6K{qcp  
:y"Zc1_E  
grid on ^;Nu\c  
@-NdgM<  
#c5G"^)z  
^}ngbDn