[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 q<Gn@xc'  
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1、光疏射向光密 [!H2i p-  
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clear {\3k(NdEX  
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close all VrLU07"0n  
r!:W-Y%&#  
n1=1,n2=1.45; booth}M  
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theta=0:0.1:90; U+:oy:mz  
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a=theta*pi/180; 2NHuZ.af  
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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)); 7ADh  
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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)); xEdCGwgp#  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); x d
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x}o]R  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); OjO$.ecT  
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figure(1) <q|IP_  
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subplot(1,2,1); x}Qet4vV  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) Dlz||==  
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legend('r_p','r_s','|r_p|','|r_s|') hDaI@_86  
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xlabel('\theta_i') 94C)63V  
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ylabel('Amplitude') U U!M/QJ  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) bU'{U0lM  
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axis([0 90 -1 1]) +bK[3KG4F5  
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grid on KQ'fp:5|/@  
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subplot(1,2,2); .s$#: ls?  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) $__e7  
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legend('t_p','t_s','|t_p|','|t_s|') _\yrR.HIa  
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xlabel('\theta_i') cy)b/4h@  
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ylabel('Amplitude') tMGkm8y-A  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) OdX-.FFl  
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axis([0 90 0 1]) 'TclH80  
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grid on ;:xOW$  
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Rp=abs(rp).^2; ,Yhy7w  
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Rs=abs(rs).^2; INwc@XB  
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Rn=(Rp+Rs)/2; /Z<"6g?  
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Tp=1-Rp; S!J.$Y<Ko  
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Ts=1-Rs; G3QB Rh{  
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Tn=(Tp+Ts)/2; Mi'Q5m  
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figure(2) DJgk"'  
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subplot(1,2,1); \phG$4(7+  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) sQW$P9s c  
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legend('R_p','R_s','R_n') Y+N^_2@+C  
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xlabel('\theta_i') CaNZScnZ  
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ylabel('Amplitude') :6LOb f\01  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 2YK4SL  
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axis([0 90 0 1]) /1++ 8=  
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grid on dtjaQsJM^  
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subplot(1,2,2); >K#Z]k  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) o*/\oVOq  
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legend('T_p','T_s','T_n') sw*k(i  
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xlabel('\theta_i') G1B~?i2$ ?  
OB3AZH$  
ylabel('Amplitude') L.(T"`-i  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) )<
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axis([0 90 0 1]) t&SJ!>7_c  
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grid on x@.iDP@(  
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2、光密射向光疏 U'-MMwE]  
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clear 4)2*|w  
ScGmft3A  
close all !nV
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a,cDj  
n1=1.45,n2=1; MBcOIy[&A  
g/z9bOgIX  
theta=0:0.1:90; 1:YDN.*  
U YUIpe  
a=theta*pi/180; Zpb3>0<R  
a^[io1}-  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 0 {{7"  
+*0THol-  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); f+xGf6V  
?2EzNNcS  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 
7M;Y#=sR  
V<4)'UI?k9  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 'Iyk`=R  
vA`[#(C  
figure(1) mSQ!<1PM  
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subplot(1,2,1); )CR8-z1`  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) L$jyeFB5  
/u:Sn=SPd  
legend('r_p','r_s','|r_p|','|r_s|') -m'a%aog  
|xKB><  
xlabel('\theta_i') eA4*Be;9e  
n+uq|sYVa  
ylabel('Amplitude') )0}obPp  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) mz\m^g3  
GUN<ZOYb=  
axis([0 90 -1.5 1.5]) 38'H-]8q"  
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grid on }|SVt`n  

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subplot(1,2,2); z%g<&Cq  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 9(X *[X#  
aO<d`DTyJ  
legend('t_p','t_s','|t_p|','|t_s|') P{>T?-Hj  
R2J3R5S=[  
xlabel('\theta_i') ~Q%QA._R?  
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ylabel('Amplitude') ~{NDtB)  
xq~=T:>/A  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) / TJTu_#  
(U.&[B  
axis([0 90 -0.5 3]) 'M'LJ.,"/  
"t\9@nzdX  
grid on R,^FJ  
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Rp=abs(rp).^2; 5cE[s<=  
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Rs=abs(rs).^2; 'Gt`3qG  
V&}Z# 9Dx  
Rn=(Rp+Rs)/2; 3=K-+dhk|t  
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Tp=1-Rp; 5rcno.~QO  
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Ts=1-Rs; Xs?>6i@$$  
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Tn=(Tp+Ts)/2; Sqge5v  
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figure(2) x NC>m&T  
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subplot(1,2,1); #tfJ?w`  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) /kWWwy<  
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legend('R_p','R_s','R_n') Rd!.8K[  
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xlabel('\theta_i') $N ]P#g?Q  
wGxLs>| 4  
ylabel('Amplitude') ;
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) a
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rLXn35O  
axis([0 90 0 1]) 'qD9kJ`  
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grid on z>&D~0  
!3&}r  
subplot(1,2,2); Q:LuRE!t  
XDWERvIj  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) x~z 2l#ow  
rTJWftH!  
legend('T_p','T_s','T_n') >@|<1Fx|  
Nl8Cctrf  
xlabel('\theta_i') 3HiW1*5W  
N?Z?g_a8  
ylabel('Amplitude') lu}[XN  
I"!{HnSG`  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) pJ(l=a  
/6fPC;l  
axis([0 90 0 1]) ^ Q}1&w%  
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grid on :tgTYIF  
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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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