epsilon_infty 5.9673 ""
Delta_epsilon 1.09 ""
lambda 680[nm] ""
omega "(2 * pi * c_const) / lambda" ""
omega_D "2 * pi  * 2113.6 [THz]" ""
gamma_D "2 * pi * 15.92 [THz]" ""
Omega_L "2 * pi * 650.07 [THz]" ""
Gamma_L "2 * pi * 104.86 [THz]" ""
epsilon_Au "epsilon_infty - omega_D^2/omega/(omega + j*gamma_D) - Delta_epsilon*Omega_L^2/((omega^2 - omega_D^2) + j * Gamma_L^2) " ""