| 200833 |
2017-11-26 22:33 |
利用MATLAB光学仿真(1)
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 ]:#W$9,WL $;";i:H` 1、光疏射向光密 IUWJi\, k/Urz*O clear OgK' ~j ocS}4.a@ close all \^cXmyQ <% Vo%ikR # n1=1,n2=1.45; .5~3D97X& v/7^v}[< theta=0:0.1:90; dF&@q, /+<G@+( a=theta*pi/180; M?m@o1\;W 16ip:/5 rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); IUG}Q7w5 i:&$I= rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 7 /"Z/^ L8pKVr tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); +wEsfYW {H=<5 ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); &`g^b^i {XXnMO4uR; figure(1) U@}r?!)"f Lq#!}QcW= subplot(1,2,1); qP9`p4c8i YvUV9qps~ plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) $m-@ICG# MbQ%'z6D legend('r_p','r_s','|r_p|','|r_s|') nbv}Q-C FZ FPzH xlabel('\theta_i') )ItW}1[I gP ^A ylabel('Amplitude')
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P&@!| NiVZ=wEp, title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 5p7i9"tgn eV9,G8 axis([0 90 -1 1]) usU6, /W{^hVkvC grid on 9
H>JS 0Y!~xyg/ subplot(1,2,2); US<l4 WuQ;Da0+_F plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) A*kN
I i2)$%M& legend('t_p','t_s','|t_p|','|t_s|') -^>7\]
#Fh:z4 xlabel('\theta_i') AI$\wp#aw 7#PQ1UWl ylabel('Amplitude') d263#R <I{Yyl^ title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) &'m&'wDt: >=Na, D axis([0 90 0 1]) HC$}KoZkC 0J.]`kR grid on cj|Urt -S%Uw Rp=abs(rp).^2; =_$Hn>vO ?0d#O_la3 Rs=abs(rs).^2; +@+*sVb o}L\b,]) Rn=(Rp+Rs)/2; cZ,}1?! VP }To Tp=1-Rp; =pb ru=/ C)&BtiUN/ Ts=1-Rs; >B$B|g~ I9sQPa Tn=(Tp+Ts)/2; =BO>Bi&& 1 l-Y)
figure(2) cE*d(g r_Pi)MPc subplot(1,2,1); dSE"G>l8 fy>~GFk( plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) N LSJ
D b%xG^jUXsX legend('R_p','R_s','R_n') nx5I 3
t+1M xlabel('\theta_i') )D7/[zb^ -]Aqt/w"l ylabel('Amplitude') +DYsBCVbag ]9}^}U1." title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) |0VZ1{=* $AdBX}{ axis([0 90 0 1]) H
;)B5C ]}9[ys grid on n"Wlfd0 m(^nG_eX subplot(1,2,2); AK&=/[U> UYhxgPGsj plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 9[:TWvd ?DKY;:dZF legend('T_p','T_s','T_n') C/q!! sV]I]DR xlabel('\theta_i') [G"Va_A8 [6\b(kS+ ylabel('Amplitude') ULzrJbP'7 yKC1h`2 title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 9`7>"[=P bv}e[yH axis([0 90 0 1]) vU9:`@beu qTe@?j grid on D=}\]Krmay U.N?cKv [attachment=80479] 0CK3jdZ+X #GzowI' [attachment=80478] 0@Z}.k30
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