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 @*MC/fe
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clear AW,OHSXh6
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close all p'n4)I2#
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n1=1,n2=1.45;
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theta=0:0.1:90; R}:KE&tq
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a=theta*pi/180; k+^'?D--'P
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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)); ]3Dl)[R
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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)); xSK~s
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); tMp=-"
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); E7zm{BX]
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figure(1) 3WY$WRv
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subplot(1,2,1); Avlz=k1*
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) lb*8G
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legend('r_p','r_s','|r_p|','|r_s|') F^k.is
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xlabel('\theta_i') x]|+\1
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ylabel('Amplitude') sZ<9A Xk-E
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) fV:4#j
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axis([0 90 -1 1]) k0-G$|QgIp
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grid on $,>@o=)_
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subplot(1,2,2); 3jH \yXj
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) (b,[C\RBF
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legend('t_p','t_s','|t_p|','|t_s|') ;6ecrQMw&
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xlabel('\theta_i') 6 15s5ZA
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ylabel('Amplitude') xVL5'y1g B
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) NcPgq?3p
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axis([0 90 0 1]) ^u}L;`L
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Rp=abs(rp).^2; K_?W\Yg
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Rs=abs(rs).^2; Eodn/
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Rn=(Rp+Rs)/2; bwM@/g%DL
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Tp=1-Rp; OA/WtQ5
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Ts=1-Rs; ?{w3|Ef&
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Tn=(Tp+Ts)/2; uXDq~`S
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figure(2) Z[\O=1E,
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subplot(1,2,1); VhjM>(
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) o&AM2U/?
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legend('R_p','R_s','R_n') R8rfM?"W
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xlabel('\theta_i') t5)+&I2
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ylabel('Amplitude') 'XY`(3q
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) +dA ,P\
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axis([0 90 0 1]) `(A5f71MfM
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grid on b=~i)`
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subplot(1,2,2); H$G0`LP0/a
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) A)%A!
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legend('T_p','T_s','T_n') mUS_(0q
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xlabel('\theta_i') \U|ZR
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ylabel('Amplitude') #Z6'?p9
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) dl hdsj:
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axis([0 90 0 1]) EkGQ(fZ1|
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grid on nqwAQhzy(
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