[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 ^~etm  
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1、光疏射向光密 {z{bY\  
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clear p>huRp^w  
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close all iUN Ib
 
aht[4(XH5  
n1=1,n2=1.45; )P sY($ &  
2GDD!w#!j  
theta=0:0.1:90; *_d7E   
9P+-#B  
a=theta*pi/180; 9w7n1k.  
koug[5T5  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); EFM5,gB.m  
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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)); %WjXg:R  
[DI+~F  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); \XZ/v*d0  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); GBPo8L"9  
1G^`-ri6  
figure(1) asppRL||  
Li4zTR|U  
subplot(1,2,1); b0Ps5G\ u  
,?^ p(w  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) k5'Vy8q  
sYI-5D]  
legend('r_p','r_s','|r_p|','|r_s|') V2wb%;q  
iP7(tnlW$  
xlabel('\theta_i') zBzZxK>$  
yb\_zE\  
ylabel('Amplitude') GjvOM y  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) UM"- nZ>[  
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axis([0 90 -1 1]) 4O^xY 6m  
lR6@ xJd:@  
grid on KW pVw!  
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subplot(1,2,2); EM(gmWHij  
YJT&{jYi  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) L>Fa^jq5  
MP Y[X[  
legend('t_p','t_s','|t_p|','|t_s|') m[~y@7AK<  
,/Z%@-rF  
xlabel('\theta_i') ,is3&9  
W}@c|d $`  
ylabel('Amplitude') qN9(S:_Px  
(R=:X+ k  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) (c=6yV@  
{k TEHe  
axis([0 90 0 1]) .ypL=~Rp  
^BikV  
grid on dy%;W%   
wd8l$*F*  
Rp=abs(rp).^2; -b9\=U[  
*v!9MU9[(  
Rs=abs(rs).^2; rr],DGg+B]  
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Rn=(Rp+Rs)/2; 61C7.EZZ;  
FpmM63$VN[  
Tp=1-Rp; k8&;lgO'  
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Ts=1-Rs; |6sp/38#p  
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Tn=(Tp+Ts)/2; 5H<m$K4z  
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figure(2) -P$PAg5"2  
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subplot(1,2,1); N2^=E1|_  
7WLy:E"  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) [Kg+^N%+  
4yy>jXDG  
legend('R_p','R_s','R_n') /$Nsd  
WUn]F~Lt  
xlabel('\theta_i') AUG#_HE]k  
[.7d<oY  
ylabel('Amplitude') ~D j8z+^  
^1I19q  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ?Jm^<  
Cgk<pky1  
axis([0 90 0 1]) ]nn
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!GjQPAW  
grid on *SJ_z(CZm  
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subplot(1,2,2); zZPO&akB"  
UmP/h@8  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) %v M-mbX  
5uGq%(24  
legend('T_p','T_s','T_n') ?=sDM& '  
S6DKREO  
xlabel('\theta_i') L\J;J%fz.  
iHM%iUV  
ylabel('Amplitude') D0-3eV-  
zFfr.g;L  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) AlaW=leTe  
ZPLm]I\]  
axis([0 90 0 1]) oWT3apGO  
Hk3sI-XkA  
grid on g wRZ%.Cn  
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2、光密射向光疏 wlqksG[B  
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clear ea 'D td  
yR{3!{r3(  
close all {4Cmu;u  
:DNY7TvZ  
n1=1.45,n2=1; *.t7G  
u&7[n_  
theta=0:0.1:90; q>+k@>bk@  
m-#2n? z-  
a=theta*pi/180; sDlO#  
YU'E@t5  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 8(~h"]`!  
/nA{#HY  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); bROLOf4S  
\_f(M|  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); T(Eugl"  
)3EY;  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); n/:
33DAB  
!Wnb|=j  
figure(1) 2E'UZ m  
8<Av@9 *}  
subplot(1,2,1); %IWPM"  
2c*GuF9(0  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) |@d\S[~^G  
lt8|9"9<  
legend('r_p','r_s','|r_p|','|r_s|') .aQ \jA  
8{sGNCvU  
xlabel('\theta_i') D'Q\za  
@\#td5'  
ylabel('Amplitude') %Q|Atgp  
cVF"!.  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) (*iHf"=\  
`b$.%S8uj=  
axis([0 90 -1.5 1.5]) N<}5A%  
MQ8J<A Pf-  
grid on ud('0r',D  
S<Xf>-8w  
subplot(1,2,2); &D*b|ilvc  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) &F~T-i>X  
KbeC"mi  
legend('t_p','t_s','|t_p|','|t_s|')
%EB/b  
zTU0HR3A  
xlabel('\theta_i') PdWx|y{%  
)`}:8y?  
ylabel('Amplitude') %XTI-B/K  
MO]&bHH7;  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) rM"l@3hP  
}
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axis([0 90 -0.5 3]) -{A<.a3P}=  
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grid on L0]_X#s>#  
L%5%T;0'~  
Rp=abs(rp).^2; et+0FF ,  
WPDyu.QD  
Rs=abs(rs).^2; ?%kV?eu'  
B-ESFATc  
Rn=(Rp+Rs)/2; H[|~/0?K  
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Tp=1-Rp; Wez5N  
=Runf +}  
Ts=1-Rs; {:W$LWET  
JN6B~ZNf  
Tn=(Tp+Ts)/2; mcok/,/  
t>sE x:  
figure(2) P>6{&(  
_aMF?Pj~m  
subplot(1,2,1); Qci]i)s$js  
'W#D(l9nI  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) ?hM64jI|  
>i O!*&Y>  
legend('R_p','R_s','R_n') O1kl70,`R  
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di=  
xlabel('\theta_i') &~w}_Fjk  
*owU)  
ylabel('Amplitude') ,=N.FS  
c:g'.'/*  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) {_dvx*M  
s<o
7!!c  
axis([0 90 0 1]) [8*)8jP3  
RrgGEx  
grid on w*MpX U<  
G#1GXFDO{  
subplot(1,2,2); s9d_GhT%-  
}d }lR  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) hpJ-
r  
:j`sr  
legend('T_p','T_s','T_n') D,ln
)["xm  
 Mc}^LDX  
xlabel('\theta_i') Tb-F]lg$  
[fIg{Q  
ylabel('Amplitude') Ic4H#w  
>"<Wjr8W!$  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)])
8JD,u  
]0\MmAJRn  
axis([0 90 0 1]) CWS4lx  
4H<lm*!^  
grid on v9->nVc-  
n-OL0$Xu  

图片:jpeg2.jpg

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图片:jpeg3.jpg

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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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谢谢了楼主分享

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