[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 30O7u3Zrb  
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1、光疏射向光密 aK8s0G!z?5  
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clear qYQ vjp  
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close all X%T%N;P  
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n1=1,n2=1.45; tNQACM8F;  
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theta=0:0.1:90; AwZz}J+  
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a=theta*pi/180; %a]Imsm  
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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)); CaVVlL  
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rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); j_h0hm]  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); tns4e\  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); &UNQ4-s  
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figure(1)  `fE'$2  
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subplot(1,2,1); PsZ>L  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) MY^o0N  
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legend('r_p','r_s','|r_p|','|r_s|') VB`% u=  
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xlabel('\theta_i') 8T[<&<^-  
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ylabel('Amplitude') @<&u;8y-Cn  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ~[f`oC  
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axis([0 90 -1 1]) L2wX?NA  
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grid on U\!9dhx  
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subplot(1,2,2); qF
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) Zy.3yQM9i  
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legend('t_p','t_s','|t_p|','|t_s|') xdVsbW)L2  
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xlabel('\theta_i') @>8{J6%\  
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ylabel('Amplitude') yE~D0%Umq  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) KT17I&:  
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axis([0 90 0 1]) -<sW`HpD'  
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grid on #<s"?Y%-  
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Rp=abs(rp).^2; 9m\Yi  
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Rs=abs(rs).^2; U$S{j&?  
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Rn=(Rp+Rs)/2; Z>l<.T"t'  
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Tp=1-Rp; `sgW0Uf  
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Ts=1-Rs; YQWq*o^:  
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Tn=(Tp+Ts)/2; IM,4Si2  
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figure(2) oX'@,(6)  
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subplot(1,2,1); VDxF%!h(  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) <_]W1V:0  
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legend('R_p','R_s','R_n') _^`V0>Mh:  
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xlabel('\theta_i') j)#yyK{k2s  
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ylabel('Amplitude') >;R7r|^k  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Rf2mBjJ(z  
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axis([0 90 0 1]) mIPDF1=)  
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grid on k+J63+obd  
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subplot(1,2,2); =-&h@mB;G  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) Pc7p2  
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legend('T_p','T_s','T_n') I?Z"
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xlabel('\theta_i') c=QN!n:  
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ylabel('Amplitude') HLdHyK/S  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) YW&`PJ9o  
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axis([0 90 0 1]) @ &Od1X  
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grid on FjLMN{eH/  
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ledr[)  
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2、光密射向光疏 [N}QCy  
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clear JNJ6HyCU  
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close all }$r]\v  
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n1=1.45,n2=1; =dQ/^C_hj  
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theta=0:0.1:90; UO!} 0'  
@A(jo32  
a=theta*pi/180; $|TLt{ K  
b!`Ze~V  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); Jf\`?g3#  
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rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); i\gt @  
+dRRMyxe4  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); bZK^q B  
8lS RK%  
ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); c': 4e)  
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figure(1) :i@ $s/  
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subplot(1,2,1); -mmQ]'.0  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) kBk2mMZ  

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legend('r_p','r_s','|r_p|','|r_s|') fwMYEj  
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xlabel('\theta_i') 2tCw{Om*  
rc~)%M<[2  
ylabel('Amplitude') .tyV=B:h  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) |W@Ko%om  
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axis([0 90 -1.5 1.5]) CdPQhv)m  
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grid on @ 'N$5  
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subplot(1,2,2); Z7[S698  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 4xg1[Z%:  
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legend('t_p','t_s','|t_p|','|t_s|') O, :|  
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xlabel('\theta_i') ua &uR7  
a2i:fz=[  
ylabel('Amplitude') =MD)F  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) AN[pjC<  
cfg.&P>  
axis([0 90 -0.5 3]) jUR* |  
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grid on [;F!\B-  
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Rp=abs(rp).^2; fQg^^ZXe"  
-eS r  
Rs=abs(rs).^2; 1&7?f  
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Rn=(Rp+Rs)/2; _v,Wl/YAp  

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Tp=1-Rp; R[fQ$` M  
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Ts=1-Rs; AeN:wOm  
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Tn=(Tp+Ts)/2; T2)CiR-b  
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figure(2) {)!ua7GF0H  
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subplot(1,2,1); p|a`Q5z!  
 CWYOzqf  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) 7v0VZ(UR  
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legend('R_p','R_s','R_n') !bnnUCTb\  
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xlabel('\theta_i') wc"~8Ah  
x;~@T9.  
ylabel('Amplitude') -4F}I3I  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) f(!cz,y^\*  
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axis([0 90 0 1])
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grid on pmi[M)D  
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subplot(1,2,2); yGC HWP  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) *H=h7ESq  
oblw!)  
legend('T_p','T_s','T_n') *UN*&DmF  
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xlabel('\theta_i') `w@z Fc!"  
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ylabel('Amplitude') n: {f\  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) X9^q-3&60  
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axis([0 90 0 1]) 6!*zgA5M'  
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grid on /6\uBy"Xt  
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np}0OX  
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感谢楼主分享

这个在《MATLAB在光学中的应用》这本书里都有

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谢谢了楼主分享

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