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 JPGzrEaZ
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1、光疏射向光密 irN6g #B?
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clear C -iK$/U
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close all A^p[52`
ar:+;.n
n1=1,n2=1.45; 4C FB"?n0
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theta=0:0.1:90; o tk} y8
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a=theta*pi/180; Y[L-7^o@y
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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)); rL}Y LR
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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)); 6P';DB
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); . |/~op4;
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); rD*sl}
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figure(1) [ :zO}r:
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subplot(1,2,1); :sC qjz
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) v'e[GB 0
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legend('r_p','r_s','|r_p|','|r_s|') hcyM 6:}
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xlabel('\theta_i') 8cA~R-
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ylabel('Amplitude') Aj0Tfdxy
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) og0*Nt+
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axis([0 90 -1 1]) nB!&Zq
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grid on &9Xhl''
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subplot(1,2,2); Z.M ,NR
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 3YZs+d.;ib
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legend('t_p','t_s','|t_p|','|t_s|')
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xlabel('\theta_i') +-G<c6 |
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ylabel('Amplitude') !&"<oPjr+
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) "70WUx(\t
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axis([0 90 0 1]) >ss/D^YS
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grid on R%'^ gFk 8
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Rp=abs(rp).^2; ]Oif|k`{
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Rs=abs(rs).^2; OD5 m9XS
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Rn=(Rp+Rs)/2; g]c 6& Y,#
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Tp=1-Rp; %%4t~XC#
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Ts=1-Rs; }6@pJ G
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Tn=(Tp+Ts)/2; IEza K
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figure(2) rW0 FA
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subplot(1,2,1); HT yLJe
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) /IM# .v
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legend('R_p','R_s','R_n') !Uq^ 7 Mw
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xlabel('\theta_i') L*~J%7
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ylabel('Amplitude') >mjNmh7
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) l' TWkQ-
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axis([0 90 0 1]) r}jGUe}d
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grid on aG 92a y
pb=c B Z$
subplot(1,2,2); ,Y>Bex_v
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) HdPo O;
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legend('T_p','T_s','T_n') ^) W[l!!<)
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xlabel('\theta_i') L_K= g_]
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ylabel('Amplitude') [NTtz
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 6MxKl
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axis([0 90 0 1]) YR;^hs?
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grid on 6KOlY>m]
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