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 k.!m- 5E
wOF";0EN
1、光疏射向光密 Qgxpq{y
`!@d$*:'
clear Z Z9D6+R
@w73U; 9\
close all v Y!'@W
Xsd+5="{N
n1=1,n2=1.45;
$ M|
?C(3T KH
theta=0:0.1:90; 90UZ\{">
bz|-x"qk
a=theta*pi/180; k%%0"+y#a
-d_7 q
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); mY&(&'2T"
nWFU8u%
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); lky5%H
xL$7bw5fY
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); d'k99(vy
!U 4<4<+
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); SYwB
#|
ph>0?Z =bn
figure(1) T.pc3+B8N
<3!Q Xc
subplot(1,2,1); T&+y~c[au
Eal*){"<,?
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 1Uk Gjw1J
T7?cnK"
legend('r_p','r_s','|r_p|','|r_s|') RiiwsnjC
7 ~!F3W T{
xlabel('\theta_i') #D-Ttla
u#nM_ UJe
ylabel('Amplitude') &n ~v;M
;}}k*<
Z
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) :N64FR#
8 DPn5E#M1
axis([0 90 -1 1]) h?P-
:E
W] I+Rlv)U
grid on ndHUQ$/(
{'z(
subplot(1,2,2); q!AcM d\
[Zne19 /
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) #AF.1;(k
)8%m|v#W
legend('t_p','t_s','|t_p|','|t_s|') ~PyZh5 x
]h%~'8g,
xlabel('\theta_i') 0SV4p .
IsiBn(1Z
ylabel('Amplitude') )4^Sz &\
I R~szUY6
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) /a }`
y
E7 P '}
axis([0 90 0 1]) n!&F%|o^^
Z $Fm73
grid on '$5Q daj
){4 !
Rp=abs(rp).^2; rIeOli:<
#=,c8" O
Rs=abs(rs).^2; O96 %U$W
#vzt6x@*
Rn=(Rp+Rs)/2; yb) a
w+gPU1|(r
Tp=1-Rp; GDYFhH7H
cC]l O
Ts=1-Rs; MG vp6/Pd
PO*0jO;%
Tn=(Tp+Ts)/2; `\yQn7 Oq
_2X6c,
figure(2) uZa)N-=b2
La$?/\Dv)
subplot(1,2,1); ,:8 oVq>?
M8${&&[;
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) B^Hh rz!
r*UE>_3J
legend('R_p','R_s','R_n') ^ /)%s 3
gWfMUl
xlabel('\theta_i') u1`JvfLrL
^00C"58A
ylabel('Amplitude') `#?]g !
O? 0`QMY
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) H`
h]y
R|[gEavFl
axis([0 90 0 1]) $Y[ C A.F
")9jt^
grid on :"gu=u!
%7
$X
*
subplot(1,2,2); OlM3G^1e1
pYh\l.@qf
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 03gYl0B
QBjvbWoIG(
legend('T_p','T_s','T_n') |Q$Dj!!1P
84/#,X!=s
xlabel('\theta_i') @PV3G
KJ
fvRqt)K s
ylabel('Amplitude') |xrnLdng0R
iN 1_ T
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ''}2JJU{
f1q0*)fk
axis([0 90 0 1]) _|7bpt 9
0+NGFX \p
grid on cUTG!
P\R
{T 3~js
{dwlW`{
.9q`Tf
B? 9"Ztb
