| 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 ic}TiTK IlO,Ql 1、光疏射向光密 22ySMtxn Fnk@)1 clear &2%|?f| }; 7I close all *[i49X&rd AMB{Fssz n1=1,n2=1.45; myVa5m!7Q 0datzEns` theta=0:0.1:90; ,%A|:T] T)<^S(57 a=theta*pi/180; UsA fZg8 fp(zd;BSQ rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); *otgI"y\ ]iW:YNvXA rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); }oiNgs/N ' A+L
# tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); y:Gn58\o }^Sk.:;n3 ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); ]8"U)fzmc. aso8,mpZuA figure(1) 7jxx,#I: o+8H:7,o' subplot(1,2,1); )w<Z4_!N4s 2[=3-1c plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) !#%>,X#+ %t6-wWM97 legend('r_p','r_s','|r_p|','|r_s|') $"(
15U s8's(*] xlabel('\theta_i') h|PC?@jp w2s06`g ylabel('Amplitude') a-S
tOO5s Vg,nNa3 title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) WC=d@d)M i?b9zn axis([0 90 -1 1]) qs\Cwn! yEjiMtQll] grid on 21Dc.t{ fwA8=oSZd subplot(1,2,2); 8oI|Z= x'\C'zeF plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) du~V=%9 S[7^#O.) legend('t_p','t_s','|t_p|','|t_s|') a}FY^4hl+ Id`V`|q xlabel('\theta_i') 5_](N$$ Iw.!*0$ ylabel('Amplitude') \1<|X].jNY M?My+o T title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) #Ff8_xhP 2 ?Be}{Qqlg axis([0 90 0 1]) opm_|0 W,H8B%e grid on EAXl.Y.
$ 'oY#a9~Z{ Rp=abs(rp).^2; <FU?^*~ gd7r9yV Rs=abs(rs).^2; +ansN~3 H#V&5|K% Rn=(Rp+Rs)/2; uY>M3h#qx w1-P6cf Tp=1-Rp; N>*+Wg$Ne u_+iH$zA Ts=1-Rs; Pf,@U'f| b+:J?MR;} Tn=(Tp+Ts)/2; /RqWrpzx@ H
I_uR$m figure(2) =&pLlG -L]-u6kC[ subplot(1,2,1); Mh~}RA"H &V~l(1 plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) _ {wP:dI " |BZrV3;H legend('R_p','R_s','R_n') 2'- "&d+O >l AtfN=' xlabel('\theta_i')
6(-s@{ 4c(Em+4 ylabel('Amplitude') A&Aj!# P33xt~ title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) >L!c} Ku I_z(ft. axis([0 90 0 1]) 3BCD0
%8 pk.\IKlG] grid on 7p Y :.iVO wxc#)W subplot(1,2,2); &R@([=1 yCN_vrH> plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 3Y2~HuM }kr?+)wB legend('T_p','T_s','T_n') /<8y> HLwMo&*rA xlabel('\theta_i') zM=MFKhi ~ /qIl)+M ylabel('Amplitude') Pb8@owG8 ^c.D& | |