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 rY P8V
>
1-ndJ@Wlz
1、光疏射向光密 '{1W )X
gGceK^#
clear > (YPkmH
&)/H?S;yN
close all a93d' ZE-X
P,LXZ
n1=1,n2=1.45; xw/h~:NT
O=9 V X
theta=0:0.1:90; Qv T-&|
* U5> j#,
a=theta*pi/180; M2;(+8 b
7m@^ =w
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); }(hYG"5
~]D \&D9=?
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); "m\UqQGX
4jue_jsle
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); q#' :aXcv"
9x
6ca
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); !kt A"Jx
y }H*p
figure(1) GurE7J^=
U3dR[*
subplot(1,2,1); zMHf?HQ-Z
<o"D/<XnB3
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) c G az$=/
Z-;uzx
legend('r_p','r_s','|r_p|','|r_s|') M,v@G$pW
&t =>:C$1Y
xlabel('\theta_i') 3K;b~xg`nw
D ;T r
ylabel('Amplitude') Vzv.e6_
`Mh<S+/
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) IQ27FV|3
BIB>U W
axis([0 90 -1 1]) e&]`X HC9
b~jvmcr
grid on \t~u
: D
t +TbCe
subplot(1,2,2); ![."xHVeL
Fl A$ G3
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) c 6}xnH
v!v0,?b*
legend('t_p','t_s','|t_p|','|t_s|') xuH<=-O>ki
,Elga}7u
xlabel('\theta_i') -QNMB4
5['B-
Iw
ylabel('Amplitude') ) 9sr,3w
\gW\Sa ^
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Q`wA"mw6k
{II7%\ya
axis([0 90 0 1]) U8I~co:h
)9W# 5V$
grid on cX]{RVZo-/
Iy 8E$B;
Rp=abs(rp).^2; e4_aKuA
0b QiUcg/
Rs=abs(rs).^2; e hB1`%@
:DF4g=
Rn=(Rp+Rs)/2; nO7o7bc
u5)A+.v
Tp=1-Rp; aw@ Aoq
4lKbw4[a
Ts=1-Rs; " 5DA GMU
Q Fqv,B\<
Tn=(Tp+Ts)/2; :? XHZ
V6 !73 iY
figure(2) 0FR%<u
e~~k}2~
subplot(1,2,1); s&_O2(l
T_B.p*\BM
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) z=h 5
u9^;~i,
legend('R_p','R_s','R_n') Xm[r#IA
t >`LO
xlabel('\theta_i') )mO;l/,0
c\rbLr}l)
ylabel('Amplitude')
x$b[m 20
EG8R*Cm,}
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Pds*M?&F
Tb6x@MorP
axis([0 90 0 1]) Q7aDl8L xn
z4`n% ~w1b
grid on `; %aQR
!P ^$g
R
subplot(1,2,2); uU !i`8
2o5< nGn
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 9i[2z:4HJ
# i=^WN<V
legend('T_p','T_s','T_n') `hf9rjy4
z4+6k-#):
xlabel('\theta_i') K KXb, /
d<m>H$\Dm
ylabel('Amplitude') @"7dk.|
@Lv_\^2/}
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) +VCo=oA
qtQ:7WO
axis([0 90 0 1]) f?^xh
)H, <i{80c
grid on k GeME
*B}R4Y|g
H 6<@
#zD+DBTAu
C x'=2Y 7
