[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 q*![AzFh  
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1、光疏射向光密 RyB~Lm`ZK%  
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clear tGdf/aTjy  
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close all kU-t7'?4  
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n1=1,n2=1.45; e pCLM_yA  
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theta=0:0.1:90; E@0
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a=theta*pi/180; tj]9~eJ-  
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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)); ik|-L8  
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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)); m@`8A  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); R`";Z$~{  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); LWsP ya  
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figure(1) I-]>d;4.  
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subplot(1,2,1); !J*,)kRN  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) 49Df?sx  
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legend('r_p','r_s','|r_p|','|r_s|') b?4/#&z]  
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xlabel('\theta_i') thO ~=
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ylabel('Amplitude') 22<0DhJ  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) BYW^/B Y)  
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axis([0 90 -1 1]) bk<\ujH  
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grid on iVFkYx%}  
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subplot(1,2,2); rV({4cIe9R  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 3Y)PU=  
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legend('t_p','t_s','|t_p|','|t_s|') y~ G.V,0  
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xlabel('\theta_i') z
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ylabel('Amplitude') #>Y'sd5'A  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) G a;.a  
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axis([0 90 0 1]) &bgvy'p  
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grid on =.|J!
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Rp=abs(rp).^2; ;v17K  
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Rs=abs(rs).^2; Bb&^{7  
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Rn=(Rp+Rs)/2; ,:Vm6u!  
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Tp=1-Rp; UgB'[@McS  
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Ts=1-Rs; 1tCQpf  
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Tn=(Tp+Ts)/2; y5= `ap  
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figure(2) /$n ~lf  
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subplot(1,2,1); dk QaM@  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) A392=:N+Q  
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legend('R_p','R_s','R_n') S1n3(U:m  
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xlabel('\theta_i') L_Q#(in  
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ylabel('Amplitude') *5sBhx  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) a/~aFmu6b  
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axis([0 90 0 1]) L?_7bXoD
 
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grid on +u@aJ_^
 
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subplot(1,2,2);
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) 2)?(R;$,  
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legend('T_p','T_s','T_n') 8,?v?uE  
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xlabel('\theta_i') _FbC{yI8;  
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ylabel('Amplitude') F Kc;W  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) y`e4;*1  
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axis([0 90 0 1]) z^o1GY  
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grid on u^I(Ny  
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2、光密射向光疏 lM\LN^f5*  
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clear >1L=,M  
'2J0>Bla  
close all XA0(f*  
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n1=1.45,n2=1; 71FeDpe  
NW$H"}+o  
theta=0:0.1:90; 9z m|Lbj  
O@8pC+#`Z  
a=theta*pi/180; vY6W|<s  
UIJx*  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); %/"Oxi^G  
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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)); Itm8b4e9;  
)G^TW'9  
tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); `znB7VQ0  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); ofc.zwH  
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figure(1) ]7sx;KFv  
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subplot(1,2,1); TmRxKrRs  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) wn+FTqj  
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legend('r_p','r_s','|r_p|','|r_s|') 4FeEGySow  
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xlabel('\theta_i') ZU'!iU|8  
UyYfpL"$A"  
ylabel('Amplitude') l'4AF| p
 
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) A Ayv  
noVa=aU^  
axis([0 90 -1.5 1.5]) suJ_nb  
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grid on wjU.W5IR  
H(u+#PIIw  
subplot(1,2,2); Hy
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) 'E;W  
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legend('t_p','t_s','|t_p|','|t_s|') i`U:gw  
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xlabel('\theta_i') Id8wS!W`7  
}amU[U,  
ylabel('Amplitude') #5CI)4x0!  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) _]#klL  
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axis([0 90 -0.5 3]) PB'0?b}fab  
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grid on ,krS-.  
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Rp=abs(rp).^2; ,4F,:w  
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Rs=abs(rs).^2; r((Tavn  
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Rn=(Rp+Rs)/2; B+VuUt{S  
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Tp=1-Rp; SBKeb|H8  
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Ts=1-Rs; 97~K!'/^+y  
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Tn=(Tp+Ts)/2; a<Uqyilm  
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figure(2) a0_(eO-S  
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subplot(1,2,1); T-L5zu  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) -e>|kPfv!  
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legend('R_p','R_s','R_n') CmC0k-%w  
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xlabel('\theta_i') 4,1oU|fz  
mBl7{w;Iv  
ylabel('Amplitude') WYIw5jzC  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) )s")y  
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axis([0 90 0 1]) E&2tBrAq  
9;f|EGwZ  
grid on 9U<Hf32  
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subplot(1,2,2); 'Ji+c  
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) C ?7X"~~  
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legend('T_p','T_s','T_n') }p'8w\C$  
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xlabel('\theta_i') 4#rAm"H  
!Yh}H<w0  
ylabel('Amplitude') (([I]q  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) :,F=w0O  
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axis([0 90 0 1]) Q=+8/b  
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grid on @>O&Cpt  
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这个在《MATLAB在光学中的应用》这本书里都有

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