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 AX 8~w(sv
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clear X$we\t
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close all <v|"eq}
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n1=1,n2=1.45; Lc{arhN
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theta=0:0.1:90; 0N$7(.
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a=theta*pi/180; .cHgYHa
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rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 5lG\ Z ?
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rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); YQ G< Q
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); s X%n` L
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); iH }-
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figure(1) * #XZ*Ga
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subplot(1,2,1); ^el+ej/=
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 1 P !)4W
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legend('r_p','r_s','|r_p|','|r_s|') \9VF)Y.ke
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xlabel('\theta_i') f$xXR$mjf
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ylabel('Amplitude') 5CFNBb%Xy
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 4`5yrC d
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axis([0 90 -1 1]) {|?^ @
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grid on G tI )O}
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subplot(1,2,2); 7&ED> Bk
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) QhZg{v[d
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legend('t_p','t_s','|t_p|','|t_s|') @L3 XBV2
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xlabel('\theta_i') +-!E% $
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ylabel('Amplitude') 7Z< ~{eD,
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) pZnp!!G
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axis([0 90 0 1]) g_Z
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Rp=abs(rp).^2; vgwpuRL5b
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Rs=abs(rs).^2; "h sT^sy
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Rn=(Rp+Rs)/2; UT<e /
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Tp=1-Rp; |./mPV r
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Ts=1-Rs; ')"+ a^c
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Tn=(Tp+Ts)/2; "n%s>@$
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figure(2) <u64 )8'
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subplot(1,2,1); f<YYo
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) T`&z QQ6F'
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legend('R_p','R_s','R_n') IzP,)!EE
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xlabel('\theta_i') IVR%H_uz
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ylabel('Amplitude') Cr.YSW g)4
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) P%3pM*.
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axis([0 90 0 1]) 0fs VbC
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grid on NAR6q{c
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subplot(1,2,2); 5n@YNaoIb
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) Zy}tZ RG
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legend('T_p','T_s','T_n') ,Bk5( e
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xlabel('\theta_i') > i/jqT/
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ylabel('Amplitude') 5hrI#fpOR
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) #D`@G8~(
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axis([0 90 0 1]) $dL..QH^K
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grid on `w@:h4f
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