[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 #_E8>;)k  
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1、光疏射向光密 TX>;2S3q  
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clear 68y
.yX[  
\R<yja  
close all h*d,AJz &.  
sLTf).xh  
n1=1,n2=1.45; p])km%zB(  
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theta=0:0.1:90; ^I0SfZ'Y  
S2*:]pYf}  
a=theta*pi/180; !yxb<  
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rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); {>z.y1  
u4S3NLG)  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); &8;mcM//4  
qg>i8V  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 3{%/1>+x5  
'g^]ZTxb  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); #*9*[Xbi  
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figure(1) lu>>~vy6  
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subplot(1,2,1); t*DM^
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q)P<lKi  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) #[A/zH|xvV  
mb&b=&  
legend('r_p','r_s','|r_p|','|r_s|') Dk4Wj"LS  
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xlabel('\theta_i') |BXq8Erh  
# mzJ^V-  
ylabel('Amplitude') nB
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)])
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axis([0 90 -1 1]) BFMM6-Ve  
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grid on D`LwW` 9  
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subplot(1,2,2); (Q@m;i>  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) Qc3!FW<26  
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legend('t_p','t_s','|t_p|','|t_s|') K,So#Ui  
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xlabel('\theta_i') P[Qr[74)  
4gYP .h:,  
ylabel('Amplitude') s#d>yx_b  
:cOwTW?Fj  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 's e9|:  
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axis([0 90 0 1]) QZDGk4GG  
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grid on %~6+=*(\  
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Rp=abs(rp).^2; UboOIx5:  
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Rs=abs(rs).^2; @]cpPW-b  
Jcy`:C\Ay  
Rn=(Rp+Rs)/2; =P5SFMPN  
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Tp=1-Rp; %``FIv15w  
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Ts=1-Rs; //WgK{Mt  
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Tn=(Tp+Ts)/2; KKOu":b  
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figure(2) 
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subplot(1,2,1); s$RymM  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) `pLp+#1 `R  
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legend('R_p','R_s','R_n') 0ai4%=d-  
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xlabel('\theta_i') D-[0^  
RRV&!<l@$  
ylabel('Amplitude') hI?<F^b  
hR. EZ|.  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) U:`rNHl  
4E"qpy \(  
axis([0 90 0 1]) E6n;_{Se/S  
RI%*5lM8;  
grid on *gBaF/C  
:pNZQX  
subplot(1,2,2);
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NeNKOW#X  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 8_KXli}7=  
b#$:XS  
legend('T_p','T_s','T_n') .&*Tj}p  
1-q\C<Q)  
xlabel('\theta_i') bG\1<:6B  
:s8,i$Ex  
ylabel('Amplitude') b
cOX/  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) <KJ18/  
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axis([0 90 0 1]) !&#CEF@J  
o2%"Luf<  
grid on y 5=J6a2.  
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2、光密射向光疏 Z#\ \NfR  
_gU[FUBtJ  
clear ncihc$V<  
~PS%^zxyn  
close all KxiZx I  
1OJ:Vy}n  
n1=1.45,n2=1; t-/%|@?D  
.o fYFK  
theta=0:0.1:90; 6"gncB.  
[;};qQ-C2  
a=theta*pi/180; F7=a|g  
.H9!UQ&It  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); `t#C0  
tXfB.[U  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); UIzk-.<  
=(zk-J<nY  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); (A"oMnjWd  
_Z9I')  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); EEF}Wf$f  
A7ck-9dT/L  
figure(1) Vd|/]Zj  
w6Ue5Ix,!  
subplot(1,2,1); \QYs(nm?k  
'O2{0  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) RU[{!E  
q-p4k`]  
legend('r_p','r_s','|r_p|','|r_s|') XMuZ
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QULrE+@  
xlabel('\theta_i') \#~~,k 6f  
d6~wJMFl  
ylabel('Amplitude') >YPfk=0f0  
|nMbf  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) oSE'-8(  
>iaZGXje  
axis([0 90 -1.5 1.5]) &XN*T.Y`  
 #]n[  
grid on m|e!1_:H  
[gD02a:u  
subplot(1,2,2); 0(0Ep(Vj  
=]"[?a >  
plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) "<bL-k*H)  
=OhhMAn  
legend('t_p','t_s','|t_p|','|t_s|') c1b@3  
A9F&XF7{  
xlabel('\theta_i') Z<xSU?J  
Z=n& fsE  
ylabel('Amplitude') `[Kh[|  
cLJ|VD7  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) \:^$ZBQr<n  
<9B43  
axis([0 90 -0.5 3]) #& Rx(  
L"#Tas\5  
grid on babDLaC@  
)HR'FlxOd  
Rp=abs(rp).^2; <K|_M)/9  
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Rs=abs(rs).^2; B*K%&w10~  
pHKj*Y  
Rn=(Rp+Rs)/2; _d)w, ;m#  
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Tp=1-Rp; >P+V!-%#  
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Ts=1-Rs; ^!E;+o' t  
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Tn=(Tp+Ts)/2; KmpX^Se[  
u~% m(  
figure(2) (w4#?_  
5+giT5K*h  
subplot(1,2,1); vg *+>lbA
 
9JP{F  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) !=I:Uc-Y  
SO8Ej)m  
legend('R_p','R_s','R_n') UV@<55)K  
B% BO  
xlabel('\theta_i') v]Pw]m5=U  
K\=bpc"Fy  
ylabel('Amplitude') Ab8~'<F$B  
]X@/0  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) < _c84,[V  
2-UZ|y
 
axis([0 90 0 1]) G8f7N;D  
?Q:se  
grid on dID]{  
:IbrV@gN{@  
subplot(1,2,2); |M0 XLCNd_  
g`3g#h$  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 1b* dC;<  
cidS/OH  
legend('T_p','T_s','T_n') c-z=(Z  
5N`g  
xlabel('\theta_i') q{n~s=  
e7pN9tXGf  
ylabel('Amplitude') 7s>d/F3*  
$aG]V-M>  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) )<IbQH|_  
D[:7B:i  
axis([0 90 0 1]) K#+TCZ,  
9CUMqaY2  
grid on 5j,)}AYO  
s
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这个在《MATLAB在光学中的应用》这本书里都有

谢谢了楼主分享

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谢谢了楼主分享

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学习学习 y`7BR?l  

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