What is wrong in my script?
5 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1065145/image.png)
clc; clear all; close all;
syms m1 m2 s1 s2 j1 j2
I = 0;
lambda = 1060*10^-9;
M=0
z=linspace(0.00001,8000)
wo = 0.02;
C = 10^(-7);
k=2*pi/lambda;
po=(0.545*C^2*k^2*z).^(-(3/5));
b=0.1;
T1=0;
T2=0;
T3=0;
T4=0;
T5=0;
T6=0;
delta= ((1i*k)./(2*z))+(1./(wo.^2))+(1./(po.^2));
delta_star= subs(delta, 1i, -1i);
etta = delta_star - (1./(delta.*po.^4));
X=((k./(2.*z)).^2).*((1./(2.*1i.*sqrt(delta))).^M).*(1./(16.*delta.*etta));
alpha = (1i.*k./(2.*z)).*(1./(delta.*po.^2)-1);
beta_p = (b./(2.*wo)).*(1./(delta.*po.^2)+1);
beta_n = (b./(2.*wo)).*(1./(delta.*po.^2)-1);
A = (alpha.^2./etta)-((k.^2)-(4.*z.^2.*delta));
B1_p = ((1i.*k.*b)./(2.*z.*wo.*delta))+((2.*alpha.*beta_p)./etta);
B1_n = ((1i.*k.*b)./(2.*z.*wo.*delta))+((2.*alpha.*beta_n)./etta);
B2_p = -(((1i.*k.*b)./(2.*z.*wo.*delta))+((2.*alpha.*beta_p)./etta));
B2_n = -(((1i.*k.*b)./(2.*z.*wo.*delta))+((2.*alpha.*beta_n)./etta));
C1_p = ((b.^2)./(4.*wo.^2.*delta))+(((beta_p).^2)./etta);
C1_n = ((b.^2)./(4.*wo.^2.*delta))+(((beta_n).^2)./etta);
C2_p = ((b.^2)./(4.*wo.^2.*delta))+(((beta_n).^2)./etta);
C2_n = ((b.^2)./(4.*wo.^2.*delta))+(((beta_p).^2)./etta);
e1=(exp(C1_p).*hermiteH(m2+j2,((1i.*beta_p)./sqrt(etta))))+(exp(C2_n).*hermiteH(m2+j2,((-1i.*beta_n)./sqrt(etta))))+((exp(C1_n).*hermiteH(m2+j2,((1i.*beta_n)./sqrt(etta))))+(exp(C2_p).*hermiteH(m2+j2,((-1i.*beta_p)./sqrt(etta)))));
e2=(exp(C1_p).*hermiteH(M-m2+j2,((1i.*beta_p)./sqrt(etta))))+(exp(C2_n).*hermiteH(M-m2+j2,((-1i.*beta_n)./sqrt(etta))))+((exp(C1_n).*hermiteH(M-m2+j2,((1i.*beta_n)./sqrt(etta))))+(exp(C2_p).*hermiteH(M-m2+j2,((-1i.*beta_p)./sqrt(etta)))));
O = zeros(size(z));
for m1 =0:M
T2=0;
for m2=0:M
T3=0;
for s1=0:m1/2
T4=0;
for j1=0:m1-(2*s1)
T5=0;
for s2=0:(M-m1)/2
T6=0;
for j2=0:(M-m1-(2*s2))
T6=T6+(factorial(M-m1-(2.*s2))/(factorial(j2)*factorial(M-m1-(2.*s2)-j2))).*((1./(2.*1i.*sqrt(etta))).^(M-m2+j2)).*((1./(po.^2)).^j2).*((b./2.*wo).^(M-m1-2*s2-j2)).*e2;
end
T5=T5+(((factorial(M-m1).*(-1).^s2)./(factorial(s2).*factorial(M-m1-2.*s2))).*(((2.*1i)./(delta.^(0.5))).^(M-m1-2.*s2))).*T6;
end
if (m1-(2*s2))<0
break
end
T4=T4+(((factorial(m1-(2.*s1)))/(factorial(j1)*factorial(m1-(2.*s1)-j1))).*((1./(2.*1i.*sqrt(etta))).^(m2+j1)).*((1./(po.^2)).^j1).*((b./2.*wo).^(m1-2.*s1-j1))).*e1.*T5;
end
T3=T3+(((factorial(m1).*(-1).^s1)./(factorial(s1).*factorial(m1-(2.*s1)))).*(((2.*1i)./(sqrt(delta))).^(m1-2.*s1))).*T4;
end
T2=T2+nchoosek(M,m2)*((-1i)^(M-m2))*T3;
end
T1=T1+nchoosek(M,m1)*((1i)^(M-m1))*T2;
end
I0 = -real(X.*T1)
I_numerical = double(vpa(I0))
I_o=abs(I_numerical)
writematrix(I_o,"Normalized_intensity_M=0_b0.1_if.xlsx")
writematrix(z,"Propagation_distance.xlsx")
6 commentaires
Réponses (1)
Walter Roberson
le 25 Juil 2022
Your code defines e1 and e2 in terms of symbolic variables m2 and j2 . Later it does for loops that assign values to m2 and j2. However, assigning a value to m2 and j2 at the MATLAB level does not affect the symbolic variables by the same name. You need to subs() the numeric values in.
format long g
syms m2 s1 s2 j1 j2
I = 0;
lambda = 1060*10^-9;
M=0;
z=linspace(0.00001,8000);
wo = 0.02;
C = 10^(-7);
k=2*pi/lambda;
po=(0.545*C^2*k^2*z).^(-(3/5));
b=0.1;
T1=0;
T2=0;
T3=0;
T4=0;
T5=0;
T6=0;
delta= ((1i*k)./(2*z))+(1./(wo.^2))+(1./(po.^2));
delta_star= subs(delta, 1i, -1i);
etta = delta_star - (1./(delta.*po.^4));
X=((k./(2.*z)).^2).*((1./(2.*1i.*sqrt(delta))).^M).*(1./(16.*delta.*etta));
alpha = (1i.*k./(2.*z)).*(1./(delta.*po.^2)-1);
beta_p = (b./(2.*wo)).*(1./(delta.*po.^2)+1);
beta_n = (b./(2.*wo)).*(1./(delta.*po.^2)-1);
A = (alpha.^2./etta)-((k.^2)-(4.*z.^2.*delta));
B1_p = ((1i.*k.*b)./(2.*z.*wo.*delta))+((2.*alpha.*beta_p)./etta);
B1_n = ((1i.*k.*b)./(2.*z.*wo.*delta))+((2.*alpha.*beta_n)./etta);
B2_p = -(((1i.*k.*b)./(2.*z.*wo.*delta))+((2.*alpha.*beta_p)./etta));
B2_n = -(((1i.*k.*b)./(2.*z.*wo.*delta))+((2.*alpha.*beta_n)./etta));
C1_p = ((b.^2)./(4.*wo.^2.*delta))+(((beta_p).^2)./etta);
C1_n = ((b.^2)./(4.*wo.^2.*delta))+(((beta_n).^2)./etta);
C2_p = ((b.^2)./(4.*wo.^2.*delta))+(((beta_n).^2)./etta);
C2_n = ((b.^2)./(4.*wo.^2.*delta))+(((beta_p).^2)./etta);
e1=(exp(C1_p).*hermiteH(m2+j2,((1i.*beta_p)./sqrt(etta))))+(exp(C2_n).*hermiteH(m2+j2,((-1i.*beta_n)./sqrt(etta))))+((exp(C1_n).*hermiteH(m2+j2,((1i.*beta_n)./sqrt(etta))))+(exp(C2_p).*hermiteH(m2+j2,((-1i.*beta_p)./sqrt(etta)))));
e2=(exp(C1_p).*hermiteH(M-m2+j2,((1i.*beta_p)./sqrt(etta))))+(exp(C2_n).*hermiteH(M-m2+j2,((-1i.*beta_n)./sqrt(etta))))+((exp(C1_n).*hermiteH(M-m2+j2,((1i.*beta_n)./sqrt(etta))))+(exp(C2_p).*hermiteH(M-m2+j2,((-1i.*beta_p)./sqrt(etta)))));
O = zeros(size(z));
for m1 =0:M
T2=0;
for m2=0:M
T3=0;
for s1=0:m1/2
T4=0;
for j1=0:m1-(2*s1)
T5=0;
for s2=0:(M-m1)/2
T6=0;
for j2=0:(M-m1-(2*s2))
T6=T6+(factorial(M-m1-(2.*s2))/(factorial(j2)*factorial(M-m1-(2.*s2)-j2))).*((1./(2.*1i.*sqrt(etta))).^(M-m2+j2)).*((1./(po.^2)).^j2).*((b./2.*wo).^(M-m1-2*s2-j2)).*subs(e2);
end
T5=T5+(((factorial(M-m1).*(-1).^s2)./(factorial(s2).*factorial(M-m1-2.*s2))).*(((2.*1i)./(delta.^(0.5))).^(M-m1-2.*s2))).*T6;
end
if (m1-(2*s2))<0
break
end
T4=T4+(((factorial(m1-(2.*s1)))/(factorial(j1)*factorial(m1-(2.*s1)-j1))).*((1./(2.*1i.*sqrt(etta))).^(m2+j1)).*((1./(po.^2)).^j1).*((b./2.*wo).^(m1-2.*s1-j1))).*subs(e1).*T5;
end
T3=T3+(((factorial(m1).*(-1).^s1)./(factorial(s1).*factorial(m1-(2.*s1)))).*(((2.*1i)./(sqrt(delta))).^(m1-2.*s1))).*T4;
end
T2=T2+nchoosek(M,m2)*((-1i)^(M-m2))*T3;
end
T1=T1+nchoosek(M,m1)*((1i)^(M-m1))*T2;
end
I0 = -real(X.*T1);
I_numerical = double(vpa(I0));
I_o=abs(I_numerical);
writematrix(I_o,"Normalized_intensity_M=0_b0.1_if.xlsx")
writematrix(z,"Propagation_distance.xlsx")
0 commentaires
Voir également
Catégories
En savoir plus sur Conversion Between Symbolic and Numeric dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!