[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 75XJL;W #  
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1、光疏射向光密 +lHjC$  
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clear gaZu;t2u  
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close all OCBgR4I  
n(;|q&3  
n1=1,n2=1.45; 5\]Sv]s)R  
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theta=0:0.1:90; z=q3Zo  
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a=theta*pi/180; .\)U@L~  
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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)); wea-zN  
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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)); >n'o*gZM  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); J  IUx  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); TJK[ev};S  
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figure(1) a
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subplot(1,2,1); A%KDiIA  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2)
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legend('r_p','r_s','|r_p|','|r_s|') ,!#*GZ.ix  
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xlabel('\theta_i') =P't(<  
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ylabel('Amplitude') J;.wXS_U8  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) gQ Fjr_IS#  
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axis([0 90 -1 1]) kMi/>gpQ  
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grid on B-ngn{Yc   
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subplot(1,2,2); #`CA8!j!!  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) }X)&zenz  
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legend('t_p','t_s','|t_p|','|t_s|') !t$'AoVBq  
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xlabel('\theta_i') 3!XjtVhK?I  
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ylabel('Amplitude') .}t~'*D  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) eKE#Yr d=x  
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axis([0 90 0 1]) {.?ZHy\Rk  
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grid on y"bByd|6  
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Rp=abs(rp).^2; C7lH]`W|/  
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Rs=abs(rs).^2; j9eTCJqB  
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Rn=(Rp+Rs)/2; & ?h#Z!  
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Tp=1-Rp; "& ])lz[
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Ts=1-Rs; $?Yry.2  
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Tn=(Tp+Ts)/2; {@6=Q 6L  
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figure(2) =XA;[PVx:#  
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subplot(1,2,1); D>/0v8  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) -G}[AkmS  
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legend('R_p','R_s','R_n') &+Z,hs9%  
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xlabel('\theta_i') t[ubn+  
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ylabel('Amplitude') %`>nS@1zp  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ]NUl9t*N4  
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axis([0 90 0 1]) "$#xK|t  
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grid on xbdN0MAU  
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subplot(1,2,2); /qMG=Z  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 3.|S  
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legend('T_p','T_s','T_n') [$qyF|/K`n  
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xlabel('\theta_i') 'qZW,],5  
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ylabel('Amplitude') *,e:]!*  
cc,^6[OH@  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) sF|5XjQ  
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axis([0 90 0 1]) kStnb?nk  
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grid on oC<.=2]  

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2、光密射向光疏 KV}FZ3jY  
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clear N/Z2hn/m  
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close all \DYWy*p
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n1=1.45,n2=1; .LZwuJ^;  
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theta=0:0.1:90; 9f2UgNqe9  
4[.oPK=i  
a=theta*pi/180; {t0) q  
1M}5>V{  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); V,mw[Hw  
ZX>AE3wk  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); }@;ep&b*  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); u -;_y='m  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); Jbjmv:db  
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figure(1) 6A>dhU  
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subplot(1,2,1); ]Bcp;D  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) U>cV|  
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legend('r_p','r_s','|r_p|','|r_s|') %5eY'  
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xlabel('\theta_i') =-8bsV/l  
X.Rb-@  
ylabel('Amplitude') e4!:c^?  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) i>D.!x  
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axis([0 90 -1.5 1.5]) ;%<,IdhN  
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grid on <J`0mVOX  
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subplot(1,2,2); [3(74  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) }q $5ig  
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legend('t_p','t_s','|t_p|','|t_s|') z.kvX+7'  
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xlabel('\theta_i') K? y[V1,  
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ylabel('Amplitude') ^lA=* jY(  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ZZHDp&lh}  
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axis([0 90 -0.5 3]) Bwa'`+bC  
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grid on Y0x%sz5  
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Rp=abs(rp).^2; U%<koD[,  
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Rs=abs(rs).^2; umiBj)r  
aMtsmL?=  
Rn=(Rp+Rs)/2; |N%fMPKa  
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Tp=1-Rp; H@q?v+2  
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Ts=1-Rs; ^>jwh  
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Tn=(Tp+Ts)/2; bYEy<7)x  
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figure(2) [H6hyG~  
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subplot(1,2,1); syaPpM Q-  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) -Z 4e.ay5  
c(!6^qk]!`  
legend('R_p','R_s','R_n') )}"wesNo".  
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xlabel('\theta_i') aX5 z&r:{  
n/+.s(7c  
ylabel('Amplitude') D;;!ODX$?  
n[G&ksQI  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ?QFpv#4  
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axis([0 90 0 1]) n=y[CKS  
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grid on ,N!o  
mt,OniU=Q  
subplot(1,2,2); ;[M}MFc/`  
z^#;~I @M  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) {(r`k;fB  
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legend('T_p','T_s','T_n') >zXsNeGQR  
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xlabel('\theta_i') %M7` Hwu  
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ylabel('Amplitude') 5N/%v&1  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) #~C]ZrK  
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axis([0 90 0 1]) Exc9` 7%.  
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grid on 56zL"TF`  
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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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