Citation:
Kosionis SG, Terzis AF, Simserides C, Paspalakis E. Linear and nonlinear optical properties of a two-subband system in a symmetric semiconductor quantum well. Journal of Applied Physics [Internet]. 2010;108:034316.
Abstract:
We study the linear and nonlinear optical response of intersubband transitions in a semiconductor quantum well. We describe the coupling of the quantum well structure with the electromagnetic field by using the nonlinear density matrix equations, in the two-subband approximation. We provide proper approximate analytical solutions to these equations that are used for the closed-form determination of the optical susceptibilities χ(1)">χ(1), χ(3)">χ(3), and χ(5)">χ(5). We also explore the dependence of χ(1)">χ(1), χ(3)">χ(3), and χ(5)">χ(5) on the electron sheet density for a specific double GaAs/AlGaAs quantum well.