[分享]利用MATLAB光学仿真（1） [复制链接]

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 $H}Q"^rs  
FP$]D~DMo  
1、光疏射向光密 sC j3h  
(|-/S0
AV  
clear .B@;ch,  
MX34qJ9k  
close all 03xQ%"TU<  
UcZ3v]$I  
n1=1,n2=1.45; G7yxCU(I\  
:;EzvRy  
theta=0:0.1:90; Yr!3mU-Uvt  

9Y(<W_{/  
a=theta*pi/180; VybiuP  
lUrchLoDt  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 3yQ(,k#  
,SBL~JJ  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 0y(d|;':  
I;7VX5X  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); w-1CA{"i7  
hOV+}P6  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); c{[d@jtO  
3k=q>~&@  
figure(1) /{lls2ycW%  
+um; eL7  
subplot(1,2,1); jooh`| `P  
|Q{l]D  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 0-@waK  
49CMRO,T  
legend('r_p','r_s','|r_p|','|r_s|') r6A
7}v  
iU &V}p  
xlabel('\theta_i') {W-PYHZ;  
e='3gzz  
ylabel('Amplitude') N%0Z> G  
),n?"  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) V!oyC$eV  
7BC9cS(0w9  
axis([0 90 -1 1]) EV9m\'=j  
}MoCUN)I  
grid on |(wx6H:  
} nQHP4'  
subplot(1,2,2); iVFnt!  
sh0O~%]g  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) %j=7e@  
+q3W t|  
legend('t_p','t_s','|t_p|','|t_s|') {MIs%w.G  
NY_Oo!)3  
xlabel('\theta_i') S"lcePN  
w^r*qi"  
ylabel('Amplitude') Q (`IiV   
;$86.2S>B  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 7n#0eska,  
1j}o.0\  
axis([0 90 0 1]) VRD2e ,K  
$u>^A<TBN  
grid on e Q0bx&  
0ya_[\  
Rp=abs(rp).^2; RVD=CX  
62.{8Uj  
Rs=abs(rs).^2; *G=n${'  
wTOB'  
Rn=(Rp+Rs)/2; Bs^W0K$uBO  
Z#9{1sHEP  
Tp=1-Rp; 7bTs+
C_;7  
o'W &gkb9  
Ts=1-Rs; 8,%y`tUn>u  
q+SDJ?v  
Tn=(Tp+Ts)/2; 3B>!9:w~f  
|gT$M_}  
figure(2) 1,4kw~tA  
~jJu*s$?  
subplot(1,2,1); }Za[<t BWS  
z.7 UfLV9  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) %uQ^mK  
MYLq2g\  
legend('R_p','R_s','R_n') .Yo#vV  
-OoXb( I4  
xlabel('\theta_i') anv_I=  
(xq25;|Y  
ylabel('Amplitude') ~?nPp$^  
a}MOhM6T  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) {<&x9<f9  
x_#yH3kJ  
axis([0 90 0 1]) 16xM
?P  
D*heYh  
grid on w!%Bc]  
F7a\Luae  
subplot(1,2,2); !G,Ru~j5:  
%]d^B|  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) Lk`0z  
GQT|T0>Ro  
legend('T_p','T_s','T_n') _bFX(~37z?  
AuSL?kZ4|Y  
xlabel('\theta_i') ln9U>*<  
I8e{%PK  
ylabel('Amplitude') z9E*Mh(NE  
jwGd*8 /  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ) 3Eax_?Z  
pZF`+642  
axis([0 90 0 1]) aZ- )w  
Xq,{)G%9nM  
grid on X`[or:cB  
^?w6  
0lY.z$V  
%5$yz|:  


*=)%T(^  

Thanks

学习学习 CZuV{Oh}?  

学习学习

谢谢了楼主分享

thanks

谢谢了楼主分享

这个在《MATLAB在光学中的应用》这本书里都有

感谢楼主分享

2、光密射向光疏 0{u31#0j
 
QI\&D)  
clear pi`sx[T@{Z  
1~X~"M  
close all >9KQWeD  
@#sBom+K`  
n1=1.45,n2=1; LZC)vF5  
OFS`?>  
theta=0:0.1:90; Mx& P^#B3  
\VJ7ahg[\  
a=theta*pi/180; 7|=*z  
L_$M9G|5n  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); mG;Gt=4  
;Kb]v\C:  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); %\xwu(|kN  
5|zISK%zHS  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); &gIDcZ  
NUiNn 7C  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); iM'{,~8R5  
<cTusC<  
figure(1) =l&A9 >\  
5tyr$P! N  
subplot(1,2,1); K]q9wR'q  
S(;3gQ77  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 5~WMb6/  
,XmTKO
c  
legend('r_p','r_s','|r_p|','|r_s|') "+^d.13+]  
G(piq4D  
xlabel('\theta_i') C`|'+  
+f)Nf)\q  
ylabel('Amplitude')  %trtP  
<&&xt ?I.  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) vF45tw  
iRwqt-WZ  
axis([0 90 -1.5 1.5]) ?kvc`7>  
+*OY%;dQ7@  
grid on 23a&m04Rk  
7X|M\WUq  
subplot(1,2,2); -QaS/WO_  
]sz3:p=5  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) n1Ag o3NM  
VU>s{_|{  
legend('t_p','t_s','|t_p|','|t_s|') 8e_ITqV%  
a8fLj  
xlabel('\theta_i') .F
=15A  
hM*T{|y  
ylabel('Amplitude') ,
"/<N*vh  
h[c HCVM:  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ; *G[3kk  
kTQ`$V(>&  
axis([0 90 -0.5 3]) !"E&Tk}  
22?9KZ`Z=  
grid on dOY+| P\  
],%}}UN  
Rp=abs(rp).^2; !Xt=+aKN  
h~$Q\WCm#  
Rs=abs(rs).^2; A{hwT,zV:  
xBGSj[1`i  
Rn=(Rp+Rs)/2; SZ}t_w `  
E&k{ubcT  
Tp=1-Rp; >iP>v`J  
l'N>9~f  
Ts=1-Rs; {rr ED  
z41 p$  
Tn=(Tp+Ts)/2; _\ n'uW$  
`
nMHuv  
figure(2) r]1|I6:&)  
o?P(Fuf  
subplot(1,2,1); $UlA_l29  
S<+_yB?  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) BY: cSqAW  
fU~>A-P  
legend('R_p','R_s','R_n') vO" $Xw  
9s)YPlDz  
xlabel('\theta_i') d87pQ3e:&  
lkp!S3,  
ylabel('Amplitude') kl[bDb1p  
?Gr<9e2Eo  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) m^_)aS  
)|/t}|DIx  
axis([0 90 0 1]) ))6
3?_  
hD58 s"L$  
grid on Ks09F}  
zqYfgV  
subplot(1,2,2); ?|^1-5l3  
xtU)3I=F%  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) Bdm<<<  
u7`<m.\  
legend('T_p','T_s','T_n') iZ[o2Tre  
t]FFGnBZ  
xlabel('\theta_i') 4BuS? #_  
xPqpNs-,  
ylabel('Amplitude') > ^3xBI:Q  
L~V 63K  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) L.!:nu]
rV  
Fw:s3ON9}  
axis([0 90 0 1]) Uy ;oJY  
oTOe(5N8a  
grid on ~PuPY:"  
KnZm(c9+  
Q}]:lmqH  
r3Z-mJ$: