[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 `~0P[>|+  
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1、光疏射向光密 |x*{fXdMhr  
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clear VPdwSW[eM  
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close all K*0aXr?  
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n1=1,n2=1.45; 2\DTJ`Y,  
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theta=0:0.1:90; 9/FG,9  
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a=theta*pi/180; 7&=-a|k~  
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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)); p1Y+
 
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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)); Oi6f8*,  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); 0S%tsXt+  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); #,7eQaica  
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figure(1) bcUC4g\9N  
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subplot(1,2,1); E"G:K`Q  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) bELIRM9  
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legend('r_p','r_s','|r_p|','|r_s|') lv=yz\  
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xlabel('\theta_i') @^'G&%j  
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ylabel('Amplitude') J'I1,5(  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) $o/0A
 
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axis([0 90 -1 1]) i_[^s:*T  
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grid on (~q#\  
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subplot(1,2,2); Y1#-^,qg  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) z\xiACIc  
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legend('t_p','t_s','|t_p|','|t_s|') jl;kcGE  
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xlabel('\theta_i') %bCcsdK  
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ylabel('Amplitude') 6V.awg,  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) +A]&AkTw  
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axis([0 90 0 1]) cmwzKu%  
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grid on %E4$ZPSW  
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Rp=abs(rp).^2; `E./p  
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Rs=abs(rs).^2; 2E@C0HaL  
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Rn=(Rp+Rs)/2; J0IdFFZ|w  
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Tp=1-Rp; o|rGy5  
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Ts=1-Rs; 7bgnZ]r8t  
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Tn=(Tp+Ts)/2; 5QqJI#4~  

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figure(2) ]%NO"HzF~  
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subplot(1,2,1); ^BF@j4*~  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) 1Qp1Es<)  
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legend('R_p','R_s','R_n') #U?EOm  
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xlabel('\theta_i') q8'@dH  
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ylabel('Amplitude') eEZ|nEU  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) V\iIvBpWg  
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axis([0 90 0 1]) +XU$GSw3(  
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grid on
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subplot(1,2,2); z/eU^2V  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) >.!5M L\  
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legend('T_p','T_s','T_n') C:tSCNH[  
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xlabel('\theta_i') )rs|=M=Xk  
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ylabel('Amplitude') [#STR=_f  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) W(u6J#2  
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axis([0 90 0 1]) (/9.+V_  
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grid on h+zkVRyA  
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2、光密射向光疏 7=QC+XSO  
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clear ! 6p)t[s  
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close all "j.oR}s9?#  
A&}nRP9  
n1=1.45,n2=1; njwR~aL`|  
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theta=0:0.1:90; y-)+I<M  
o7@4=m}  
a=theta*pi/180; 3"^)bG
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q~g&hR}K  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); ik1L  
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rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); Mc$v~|i6  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); =-Q  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); eRl?9  
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figure(1) \}4#**]  
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subplot(1,2,1); ]/VIff  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) GdfKxSO  
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legend('r_p','r_s','|r_p|','|r_s|') &6|^~(P?  
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xlabel('\theta_i') 9i2vWSga  
a9@l8{)RX  
ylabel('Amplitude') sNk>0 X[  
Y(I*%=:$  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) c@o/Cv  
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axis([0 90 -1.5 1.5]) A]SB c2  
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grid on xU\:Vid+A  
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subplot(1,2,2); fssL'DD  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 9 <kkzy  
jXDzjt94J  
legend('t_p','t_s','|t_p|','|t_s|') "$:y03V  
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xlabel('\theta_i') C@?e`=9(  
#:\+7mCF  
ylabel('Amplitude') H;7H6fyZ  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) *}iT6OJ  
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axis([0 90 -0.5 3]) VY&9kN  
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grid on 7jg(j~tQ  
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Rp=abs(rp).^2; J>|:T  
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Rs=abs(rs).^2; bd 1J#V]  
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Rn=(Rp+Rs)/2; DwrCysIK  
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Tp=1-Rp; @Kb|  
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Ts=1-Rs; /h.3<HI."*  
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Tn=(Tp+Ts)/2; AO7qs:+  
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figure(2) }9Dv\"
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subplot(1,2,1); !RUo:b+  
Dp6"I!L<|  
plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) dv9Pb5i  
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legend('R_p','R_s','R_n') ZE(RvPW  

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xlabel('\theta_i') y`@4n.Q  
6C51:XQO  
ylabel('Amplitude') .-26 N6S  
nT.2jk+  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) }]GK@nn7  
r|F,\fF  
axis([0 90 0 1]) L2O57rT2  
rMFZ#38d  
grid on ?d#(ian  
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subplot(1,2,2); *U^I`j[u  
Ay6rUN1ef  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) [3NV #  
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legend('T_p','T_s','T_n') }N9a!,{P=b  
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xlabel('\theta_i') +
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m)RxV@  
ylabel('Amplitude') tJ_@AcF  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 8=Y|B5  
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axis([0 90 0 1]) K:50?r_-6  
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grid on CKt~#$ I%  
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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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