[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 z!27#
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1、光疏射向光密 T677d.zaT  
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clear e:}8|e~T  
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close all JmdXh/X
 
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n1=1,n2=1.45; +F q`I2l|  
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theta=0:0.1:90; qCK)FOU  
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a=theta*pi/180; 'SF+P)Kmz  
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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)); B;tU+36nM  
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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)); 3nv7Uz  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); iJ_`ZM.w  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); -e7|DXj  
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figure(1) +4^XFPq~  
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subplot(1,2,1); pj>b6^TI6C  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) r4caIV  

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legend('r_p','r_s','|r_p|','|r_s|') E 5}T_~-{  
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xlabel('\theta_i') G?12?
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ylabel('Amplitude') QxvxeK!Y  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 1;r^QAK&  
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axis([0 90 -1 1]) K0 .f4o  
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grid on awuUaE  
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subplot(1,2,2); Nk=F.fp|/  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) H4 Y7p  
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legend('t_p','t_s','|t_p|','|t_s|') D4'"GaCv  
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xlabel('\theta_i') "{;]T  
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ylabel('Amplitude') Mh'QD)28c  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) b6_*ljM  
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axis([0 90 0 1]) ]3hz{zqV^  
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grid on ,R0@`t1 p  
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Rp=abs(rp).^2; 8 W8ahG}  
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Rs=abs(rs).^2; _
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Rn=(Rp+Rs)/2; u,[Yaw"L  
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Tp=1-Rp; ;&e5.K+.Z  
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Ts=1-Rs; Mo &I
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Tn=(Tp+Ts)/2;
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figure(2) |tz1'YOB  
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subplot(1,2,1); Gh0H) q  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) Q@%VJPLv.  
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legend('R_p','R_s','R_n') C]*9:lK  
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xlabel('\theta_i') AM##:4   
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ylabel('Amplitude') ?PiJ7|  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) $;7?w-.  
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axis([0 90 0 1]) +OK.[ji?  
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grid on >!E:$;i@  
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subplot(1,2,2); En+4@BC  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 9C[3w[G~C  
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legend('T_p','T_s','T_n') n5 @H  
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xlabel('\theta_i') 8U\;N  
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ylabel('Amplitude') sq*R)cZ  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Nol',^)  
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axis([0 90 0 1]) |^Try2@  
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grid on #93;V'b]  
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2、光密射向光疏 Jnb>u*7,  
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clear <bXfjj6YJ@  
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close all /JtKn*?}:>  
fseHuL=~  
n1=1.45,n2=1; (Pin9^`ALc  
`t{aN|3V[  
theta=0:0.1:90; vov"60K  
b0tr)>d  
a=theta*pi/180; 'RTz*CSZ  
6Ei>VcN4a  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); P`Anf_  
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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)); syv6" 2Z'B  
5=.,a5  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); Ca*^U-  
op"RrZAZBT  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); C \H%4p1r  
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figure(1) (lwkg8WC  
7zgU>$i  
subplot(1,2,1); '?v.O}  
hR[Qdu6r  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 9-Qub+0o  
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legend('r_p','r_s','|r_p|','|r_s|') :?U1^!$$1  
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xlabel('\theta_i') (4>k+ H  
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ylabel('Amplitude') y%cg  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Fj7cI +  
SH<Nt[8C  
axis([0 90 -1.5 1.5]) Hp8)
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grid on lmp0Ye|  
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subplot(1,2,2); hJkIFyQ{j  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) /$%apci8  
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legend('t_p','t_s','|t_p|','|t_s|') 3EI$tP@4  
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xlabel('\theta_i') |*fGG?}  
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ylabel('Amplitude') wZ0$ylEX  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) y7u"a)T  
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axis([0 90 -0.5 3]) (VI4kRj  
f*0[[J0]  
grid on (caxl^=  
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Rp=abs(rp).^2; nkG1&wiX  
jRmv~]  
Rs=abs(rs).^2; ~Z=Q+'Hu0  
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Rn=(Rp+Rs)/2; >j4;{r+eQw  
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Tp=1-Rp; dli?/U@hO  
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Ts=1-Rs; p[!&D}&6h  
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Tn=(Tp+Ts)/2; YiTiJ9jf  
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figure(2) A%-*M 'J  
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subplot(1,2,1); rFh!&_  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) eBFsKOtu  
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legend('R_p','R_s','R_n') Kyq/'9`  
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xlabel('\theta_i') @!=q.
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jL8.*pfv  
ylabel('Amplitude') ]]Sz|6P  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) W;4rhZEgd  
,6=j'j1#a  
axis([0 90 0 1]) v,I4ozDx  
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grid on J/mLmSx  
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subplot(1,2,2); x"9`w42\r  
s!:'3[7+  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) <wfPbzs-V  
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legend('T_p','T_s','T_n') j^;f {0f  
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xlabel('\theta_i') iH<:wLY&J  
uD0T()J.P5  
ylabel('Amplitude') pX8TzmIB0  
Q'5]E{1<'n  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) [3lAKI  
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axis([0 90 0 1]) : E[\1  
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grid on G8z.JX-7g  
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图片:jpeg2.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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