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 J|q_&MX/
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clear u^uG_^^,/
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close all # 0 (\s@r.
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n1=1,n2=1.45; [<;2 C
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theta=0:0.1:90; /km3L7L%R
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a=theta*pi/180; y_&XF>k91
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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)); u5_fM*Ka
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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)); 3Cl9,Z"&6$
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); [ub\DL l
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); #*/h*GNMs
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figure(1) c53`E U
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subplot(1,2,1); t_dg$K B
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) M[{:o/]<
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legend('r_p','r_s','|r_p|','|r_s|') aB) DX
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xlabel('\theta_i') >>D i
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ylabel('Amplitude') (c2\:hvy
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) {[?|RC;\Y
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axis([0 90 -1 1]) LH;G :
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grid on $ZO<8|bW
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subplot(1,2,2); O;BPd:<
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 9(WC# -,
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legend('t_p','t_s','|t_p|','|t_s|') )}!'VIe^!
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xlabel('\theta_i') ! .$P`wKr
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ylabel('Amplitude') |plo65
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ,?6m"ov4(
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axis([0 90 0 1]) }8:
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grid on -Wk"o?} q
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Rp=abs(rp).^2; %Qz`SO 8x?
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Rs=abs(rs).^2; j//wh1
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Rn=(Rp+Rs)/2; qL.Y_,[[
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Tp=1-Rp; T+h{Aeg
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Ts=1-Rs; ~|C1$.-
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Tn=(Tp+Ts)/2; .G~5F- 8'
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figure(2) p|V1G h<
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subplot(1,2,1); c[lob{,
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) Sr 4 7u{n
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legend('R_p','R_s','R_n') k.[) R@0%
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xlabel('\theta_i') /
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ylabel('Amplitude') kGV`Q
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) E*CQG;^=N
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axis([0 90 0 1]) 6XK`=ss?
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grid on L)Ar{*xC
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subplot(1,2,2); ! >Y\&z A
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) W<]Oo ]
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legend('T_p','T_s','T_n') |0 R%!v(,
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xlabel('\theta_i') :wmf{c
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ylabel('Amplitude') &\` a5[
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) SH$cn,3F8
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axis([0 90 0 1]) tF g'RV{
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grid on h]DE Cd{
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