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
8F._9U-EN @Y1s$,=xB 1、光疏射向光密
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=Qcr %i5M77#Z clear
\[y`'OD~ Oil?JI Hq close all
Av fNwE oH_;4QU4y n1=1,n2=1.45;
|UX(+; n
G K7![p theta=0:0.1:90;
)ubiB^g'm J:Qa5MTWp a=theta*pi/180;
K*~0"F>"0 r,h%[JKM rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2));
/Njd[= B [PDNwh0g5 rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2));
))"6er n abyo4i5T tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2));
#`)(e JF
iKT [=c ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2));
CLUW!F %^ !,t:d figure(1)
[5SD _dN G|!on<l& subplot(1,2,1);
MB ]<Dyj , oC0qG[yp9S plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2)
V6@o]* fTK3,s1= legend('r_p','r_s','|r_p|','|r_s|')
UWd=!h^dt = ,6z4" ) xlabel('\theta_i')
ppVHLr Uh $xPaYf ylabel('Amplitude')
o Y H^_ V }khV'6"'| title(['n_1=',num2str(n1),',n_2=',num2str(n2)])
5Ou`z5S\k %5"9</a&G axis([0 90 -1 1])
YwjKAyLU 62ws/8d6f grid on
<h: x= X:nN0p # subplot(1,2,2);
SC)g^ E# hu h6 t ! plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2)
n<z [J=I rWR}Stc@] legend('t_p','t_s','|t_p|','|t_s|')
>JFO@O5 :LW4E9O=H xlabel('\theta_i')
+ |n*b ?kbiMs1;u ylabel('Amplitude')
KUlp"{a`,K E/|To title(['n_1=',num2str(n1),',n_2=',num2str(n2)])
#Y
a4ps_ CYY=R'1:G{ axis([0 90 0 1])
q_MG ?re svcK?^
HTe grid on
L.* M&Ry 'h|DO/X~L Rp=abs(rp).^2;
gd`!tRcNY KBx6NU?;PO Rs=abs(rs).^2;
~j}cyHg g| I6'K!< Rn=(Rp+Rs)/2;
[+n*~ keL&b/@ Tp=1-Rp;
$_"'&zQ' R ;&AijS8 Ts=1-Rs;
hK L4cpK4 5YE'L. Tn=(Tp+Ts)/2;
XDOY`N^L *x@Onj figure(2)
tE<H|_{L f
e\$@- subplot(1,2,1);
7)`nD<j 5 Y']\Jq{OS plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2)
h-q3U%R4}@ *\+\5pu0 legend('R_p','R_s','R_n')
}YGV\Nu EE&K0<?T|: xlabel('\theta_i')
[%y';`( x snE8 K}4 ylabel('Amplitude')
{6|38$Rl /?5 1D@ title(['n_1=',num2str(n1),',n_2=',num2str(n2)])
^}/PGG\~r i l4^zj82 axis([0 90 0 1])
} ~e8e \A 2 r] grid on
4gI/!,J(b +%yfcyZ. subplot(1,2,2);
% ?0 :vn :~&~y-14 plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2)
%(3|R@G. D=j-!{zB legend('T_p','T_s','T_n')
n{ n52][J] )WNzWUfn=z xlabel('\theta_i')
2V mNZ {< (-UYB9s ylabel('Amplitude')
e2 4WW^S eVjBGJ=2e title(['n_1=',num2str(n1),',n_2=',num2str(n2)])
rK' L6o BTqS'NuT axis([0 90 0 1])
SA&Rep^ H%qsjB^ grid on
F~R;n_IJ u%&`}g 
vOn` /5- (9''MlG d% 
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