以下是可以计算三层薄膜材料透射率和反射率的Matlab代码。请根据您实际的数据修改代码中的参数和介电张量:```matlab% 设置波长范围lambda_start = 0.4; % 波长的起始值,单位为微米lambda_end = 2.5; % 波长的结束值,单位为微米% 设置波长范围和步长lambda = linspace(lambda_start, lambda_end, 1000); % 波长范围,单位为微米d_lambda = abs(lambda(2) - lambda(1)); % 步长,单位为微米% 假设反射光和透射光的强度比R = 0.1;T = 1 - R;% 计算透射光的传输矩阵% 假设VO2介电常数主要沿着光线方向变化,因此介电张量为一个对角矩阵% VO2介电张量(分别对应室温和高温状态)eps_vo2_at = ;eps_vo2_ht = ;% SiO2介电张量eps_sio2 = ;% Ag介电张量eps_ag = ;% 计算三层结构的传输矩阵theta = 0; % 入射角度phi = 0; % 入射方位角(假设光线沿z轴)% 构造入射光电场的矢量E0 = [1; 0; 0]; % 入射光强度Ex_in = E0(1);Ey_in = E0(2);Ez_in = E0(3);% 下面的代码计算各层的传输矩阵T_vo2_at = zeros(3, 3);T_vo2_ht = zeros(3, 3);T_sio2 = zeros(3, 3);T_ag = zeros(3, 3);T_vo2_at_xx = cos(theta);T_vo2_at_xy = 0;T_vo2_at_xz = -1/eps_vo2_at(1,1) * sin(theta) * cos(phi);T_vo2_at_yx = 0;T_vo2_at_yy = cos(theta);T_vo2_at_yz = -1/eps_vo2_at(2,2) * sin(theta) * sin(phi);T_vo2_at_zx = -eps_vo2_at(3,3)/eps_vo2_at(1,1) * sin(theta) * cos(phi);T_vo2_at_zy = -eps_vo2_at(3,3)/eps_vo2_at(2,2) * sin(theta) * sin(phi);T_vo2_at_zz = cos(theta);T_vo2_at = [T_vo2_at_xx T_vo2_at_xy T_vo2_at_xz; T_vo2_at_yx T_vo2_at_yy T_vo2_at_yz; T_vo2_at_zx T_vo2_at_zy T_vo2_at_zz];T_vo2_ht_xx = cos(theta);T_vo2_ht_xy = 0;T_vo2_ht_xz = -1/eps_vo2_ht(1,1) * sin(theta) * cos(phi);T_vo2_ht_yx = 0;T_vo2_ht_yy = cos(theta);T_vo2_ht_yz = -1/eps_vo2_ht(2,2) * sin(theta) * sin(phi);T_vo2_ht_zx = -eps_vo2_ht(3,3)/eps_vo2_ht(1,1) * sin(theta) * cos(phi);T_vo2_ht_zy = -eps_vo2_ht(3,3)/eps_vo2_ht(2,2) * sin(theta) * sin(phi);T_vo2_ht_zz = cos(theta);T_vo2_ht = [T_vo2_ht_xx T_vo2_ht_xy T_vo2_ht_xz; T_vo2_ht_yx T_vo2_ht_yy T_vo2_ht_yz; T_vo2_ht_zx T_vo2_ht_zy T_vo2_ht_zz];T_sio2_xx = cos(theta);T_sio2_xy = 0;T_sio2_xz = -1/eps_sio2(1,1) * sin(theta) * cos(phi);T_sio2_yx = 0;T_sio2_yy = cos(theta);T_sio2_yz = -1/eps_sio2(2,2) * sin(theta) * sin(phi);T_sio2_zx = -eps_sio2(3,3)/eps_sio2(1,1) * sin(theta) * cos(phi);T_sio2_zy = -eps_sio2(3,3)/eps_sio2(2,2) * sin(theta) * sin(phi);T_sio2_zz = cos(theta);T_sio2 = [T_sio2_xx T_sio2_xy T_sio2_xz; T_sio2_yx T_sio2_yy T_sio2_yz; T_sio2_zx T_sio2_zy T_sio2_zz];T_ag_xx = cos(theta);T_ag_xy = 0;T_ag_xz = -1/eps_ag(1,1) * sin(theta) * cos(phi);T_ag_yx = 0;T_ag_yy = cos(theta);T_ag_yz = -1/eps_ag(2,2) * sin(theta) * sin(phi);T_ag_zx = -eps_ag(3,3)/eps_ag(1,1) * sin(theta) * cos(phi);T_ag_zy = -eps_ag(3,3)/eps_ag(2,2) * sin(theta) * sin(phi);T_ag_zz = cos(theta);T_ag = [T_ag_xx T_ag_xy T_ag_xz; T_ag_yx T_ag_yy T_ag_yz; T_ag_zx T_ag_zy T_ag_zz];% 计算传输矩阵T_total = T_ag * T_sio2 * T_vo2_ht * T_vo2_at;% 计算出射光的电场矢量E_out = zeros(length(lambda), 3);for i = 1:length(lambda) E_in_i = E0; delta_phase = exp(1i * 2 * pi * delta_L / lambda(i)); T_i = T_total(:,:,i); E_out_i = T_i * E_in_i\\\'; E_out(i,:) = E_out_i\\\';end% 计算透射光强度谱和反射光强度谱I_t = T * (conj(E_in) .* E_in) * T_total\\\' * conj(E_out) .* E_out;R = T * (conj(E_in) .* E_in) * T_total\\\' * conj(E_out) .* E_out;% 绘图figure;subplot(2,1,1);plot(lambda, abs(I_t).^2); % 绘制透射光强度谱xlabel(\\\'波长 (\\\\mum)\\\');ylabel(\\\'透射光强度\\\');hold on;plot(lambda, R, \\\'--\\\'); % 绘制反射光强度谱subplot(2,1,2);plot(lambda, angle(I_t)); % 绘制透射光相位谱xlabel(\\\'波长 (\\\\mum)\\\');ylabel(\\\'透射光相位\\\');hold on;plot(lambda, angle(R), \\\'--\\\'); % 绘制反射光相位谱```
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