| 200833 |
2017-11-26 22:33 |
利用MATLAB光学仿真（1）
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 ]:#W$9,WL
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clear OgK' ~j
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close all \^cXmyQ <%
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n1=1,n2=1.45; .5 ~3D97X&
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theta=0:0.1:90; dF&@q,
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a=theta*pi/180; M?m@o1\;W
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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)); IU G}Q7w5
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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)); 7 /" Z/^
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); +wEsfYW
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); &`g^b^i
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figure(1) U @}r?!)"f
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subplot(1,2,1); qP9`p4c8i
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) $m-@ICG#
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legend('r_p','r_s','|r_p|','|r_s|') nbv}Q-C
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xlabel('\theta_i') )ItW}1[I
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ylabel('Amplitude')
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 5p7i9"tgn
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axis([0 90 -1 1]) us U6,
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grid on 9
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subplot(1,2,2); US<l4
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) A*kN
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legend('t_p','t_s','|t_p|','|t_s|') - ^>7\]
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xlabel('\theta_i') AI$\wp #aw
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ylabel('Amplitude') d263#R
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) &'m&'w Dt:
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axis([0 90 0 1]) HC$}KoZkC
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grid on cj|Urt
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Rp=abs(rp).^2; =_$Hn>vO
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Rs=abs(rs).^2; +@+*sVb
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Rn=(Rp+Rs)/2; cZ ,}1?!
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Tp=1-Rp; =pb ru=/
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Ts=1-Rs; >B$B|g ~
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Tn=(Tp+Ts)/2; =BO>Bi&&
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figure(2) cE *d (g
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subplot(1,2,1); dSE"G>l8
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) N LSJ
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legend('R_p','R_s','R_n') n x 5I
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xlabel('\theta_i') )D7/[zb^
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ylabel('Amplitude') +DYsBCVbag
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) |0VZ1{=*
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axis([0 90 0 1]) H
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grid on n"Wlfd0
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subplot(1,2,2); AK &=/ [U>
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 9[:TWvd
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legend('T_p','T_s','T_n') C/ q!!
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xlabel('\theta_i') [G"Va_A8
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ylabel('Amplitude') ULzrJbP'7
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 9`7>" [=P
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axis([0 90 0 1]) vU9:` @beu
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grid on D=}\]Krmay
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