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[ÇóÖú] ÀûÓÃmatlab»­³ö¼¶ÁªOPO²¨³¤µ÷гÇúÏß

Çó¸ßÊÖÖ¸µã£¡ÈçÌ⣬ģÄâPPLN¾§Ìå¼¶ÁªOPO+OPAζȵ÷гÇúÏߣ¬µ«ÊDz»ÖªµÀ¸ÃÔõôģÄ⣡ҪµÃµ½×îºóÃæµÄÄǸöͼ¡£
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clear
clc
n=1;
m=1;
a1=5.756;
a2=0.0983;
a3=0.2020;
a4=189.32;
a5=12.52;
a6=1.32e-2;
b1=2.860e-6;
b2=4.700e-8;
b3=6.113e-8;
b4=1.516e-4;
A=31.5;
lamdap=1.064;
T = [25:0.1:250];
lamdas = [1.065:0.01:3.2];
lamdass = [2.5:0.01:4.5];
for i_T = 1:length(T)
    f=(T(i_T)-24.5)*(T(i_T)+570.82);
    ni = zeros(size(lamdas));
    np = ni;
    ns = ni;
    nss = ni;
    nii = ni;
    for i_lamdas = 1:length(lamdas)
        lamdai(i_lamdas)=1./(1./lamdap-1./lamdas(i_lamdas));
        ni(i_lamdas)=(a1+b1.*f+(a2+b2.*f)./(lamdai(i_lamdas).^2-(a3+b3.*f)^2)+(a4+b4.*f)./(lamdai(i_lamdas).^2-a5^2)-a6.*lamdai(i_lamdas).^2).^(1/2);
        np(i_lamdas)=(a1+b1.*f+(a2+b2.*f)./(lamdap.^2-(a3+b3*f)^2)+(a4+b4.*f)./(lamdap.^2-a5^2)-a6.*lamdap.^2).^(1/2);
        ns(i_lamdas)=(a1+b1.*f+(a2+b2.*f)./(lamdas(i_lamdas).^2-(a3+b3.*f)^2)+(a4+b4.*f)./(lamdas(i_lamdas).^2-a5^2)-a6.*lamdas(i_lamdas).^2).^(1/2);
    end
    for i_lamdass = 1:length(lamdass)
        lamdaii(i_lamdass)=1/(1/lamdas-1/lamdass(i_lamdass));
        nii(i_lamdass)=(a1+b1.*f+(a2+b2.*f)./(lamdai2(i_lamdass).^2-(a3+b3.*f)^2)+(a4+b4.*f)./(lamdai2(i_lamdass).^2-a5^2)-a6.*lamdai2(i_lamdass).^2).^(1/2);
        ns(i_lamdass)=(a1+b1.*f+(a2+b2.*f)./(lamdas(i_lamdass).^2-(a3+b3.*f)^2)+(a4+b4.*f)./(lamdas(i_lamdass).^2-a5^2)-a6.*lamdas(i_lamdass).^2).^(1/2);
        nss(i_lamdass)=(a1+b1.*f+(a2+b2.*f)./(lamdass(i_lamdass).^2-(a3+b3.*f)^2)+(a4+b4.*f)./(lamdass(i_lamdass).^2-a5^2)-a6.*lamdass(i_lamdass).^2).^(1/2);
    end
       temp1 = abs(np./lamdap-ns./lamdas-ni./lamdai-1/A);
       [x1,i_x1] = min(temp1);
       lamdai_opt(i_T) = lamdai(i_x1);
       lamdas_opt(i_T) = lamdas(i_x1);
       temp2 = abs(ns./lamdas-nss./lamdass-nii./lamdaii-1/A);   
       [x2,i_x2] = min(temp2);
       lamdaii_opt(i_T) = lamdaii(i_x2);
       lamdass_opt(i_T) = lamdass(i_x2);     
end
plot(T,lamdai_opt,'b.')
hold on
plot(T,lamdas_opt,'b.')
hold on
plot(T,lamdaii_opt,'b.')
hold on
plot(T,lamdass_opt,'b.')

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