| 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 *~p~IX{ b0\'JZ 1、光疏射向光密 ]>utLi5dX H<$.AC\zn clear p(2j7W-/ O5"o/Y~m close all j
s(E-d/ R=D\VIu,Z n1=1,n2=1.45; OL+!,Y 6{O#!o*g theta=0:0.1:90; jgiP2k[Xom S 6sSdo'
a=theta*pi/180; " mKMym2 FV[6">;g rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); j/zD`ydj Kuh! b`9 rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 47Y|1 q.(p.uD tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); <`dF~ r#{r]q_E* ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); -t9oL3J D3^[OHi~a figure(1) _ Ko0 ?Y"bt^4j subplot(1,2,1); &`rV{%N" C9-9cdW
H plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 5H6GZ:hp >Kl78w: legend('r_p','r_s','|r_p|','|r_s|') Ow\9vf6H F"a^`E& xlabel('\theta_i') 0w >DU^+ oH+UuP2a-J ylabel('Amplitude') <$liWAGX\ 6'C!Au title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ]\nG1+ta dE5DH~ldV axis([0 90 -1 1]) !2x"'o #SY8Zv grid on M3Kpp_d_! v)JQb-< subplot(1,2,2); K*J8(/WkD ,8uu,,c plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) FH8?W|
G RCt)qh+ legend('t_p','t_s','|t_p|','|t_s|') 1at$_\{.( [Hdk=p xlabel('\theta_i')
Xi5kE'_ Pyi PhOJe ylabel('Amplitude') 4qda!% |PN-,f{ - title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) KGUpXMd^Z yh_s(>sh axis([0 90 0 1]) 5q]u: #},]`"n\ grid on "!)8bTW 89l_%To Rp=abs(rp).^2; F dv&kK! ~E^EF{h
Rs=abs(rs).^2; p!'wOThO` se_zCS4Y Rn=(Rp+Rs)/2; +bm2vIh$ y<F$@ Tp=1-Rp; MbnV5 b:X va8:QHdU Ts=1-Rs; gb(\c:yg1R mC~W/KReA Tn=(Tp+Ts)/2; F__>`Dol Cu;X{F'H figure(2) ! #
tRl n 2#uH subplot(1,2,1); tzpGKhrk6 jZv8X5i plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) Tf@t.4\ @YwaOc_% legend('R_p','R_s','R_n') ?5mVC]W?] =|3L'cDC xlabel('\theta_i') QHs=Zh;" FA{I
S0 ylabel('Amplitude') d+T]EpQJ* 1rPeh{SZ title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) LO"HwN43h iI&SI#;
_ axis([0 90 0 1]) 66L*6O4 >Dtw^1i grid on p'w[5' l"*>>/U k subplot(1,2,2); OD1ns 6l_8Q w*5I plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) R&xD|w8UjM hChM hc legend('T_p','T_s','T_n') 6AQ;P g"Ii'JZ? xlabel('\theta_i') *R~oA` CKBi-q FH ylabel('Amplitude') oub4/0tN,~ G~esSL^G/ title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) coLn};W2 Gj)Qw6
axis([0 90 0 1]) },Z-w_H 5R ec}H grid on ]hf4= gm S'@"a%EV [attachment=80479] 0N
T3 t#pY2!/T3 [attachment=80478] 3:;%@4f
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