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 'uGn1|Pvy
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1、光疏射向光密 @Q V|<NeH
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clear \`;FL\1+W
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close all <_=a 1x
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n1=1,n2=1.45; i=OPl
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theta=0:0.1:90; ,Bk mf |
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a=theta*pi/180; v
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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)); B f~
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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)); dqwAQ-x
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); x* *]@v"g
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); & Ey5 H?U!
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figure(1) 5"%r,GM U
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subplot(1,2,1); bccJVwXv
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) kngkG|du
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legend('r_p','r_s','|r_p|','|r_s|') /5 B{szf
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xlabel('\theta_i') 8VQJUwf;
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ylabel('Amplitude')
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) lyNa(3
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axis([0 90 -1 1]) GGo)k1T|)
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grid on s%z\szd*
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subplot(1,2,2); _p <W
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) hNgbHzW
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legend('t_p','t_s','|t_p|','|t_s|') EtvZk9d6h*
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xlabel('\theta_i') };6[Byf
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ylabel('Amplitude') f2ygN6(>
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) +EjH9;gx
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axis([0 90 0 1]) Z
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grid on Wew'bj
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Rp=abs(rp).^2; QH@?.Kb_qU
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Rs=abs(rs).^2; /\3 4o{
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Rn=(Rp+Rs)/2; K>iM6Uv
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Tp=1-Rp; L;N)l2m.\
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Ts=1-Rs; hEla8L4Y
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Tn=(Tp+Ts)/2; G x /sJ(
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figure(2) eH,r% r,
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subplot(1,2,1); 9eO!_a^
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) ziZLw$ )
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legend('R_p','R_s','R_n') ?# ~3%$>
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xlabel('\theta_i') 9n4 vuBgv
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ylabel('Amplitude') 4M4Y2f BH
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) s jl(
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axis([0 90 0 1]) &/QdG= r +
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grid on !qGE R.
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subplot(1,2,2); E57:ap)/
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) d&[Ct0!++u
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legend('T_p','T_s','T_n') t8SvU
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xlabel('\theta_i') 3sr> ?/>:
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ylabel('Amplitude') #._%~ }U
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) qyi5j0)W
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axis([0 90 0 1]) U`YPzZp_
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grid on )}ygzKEa
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