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Linear and nonlinear optical properties of a two-subband system in a symmetric semiconductor quantum well

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4 Author(s)
Kosionis, Spyridon G. ; Department of Physics, School of Natural Sciences, University of Patras, Patras 26504, Greece ; Terzis, Andreas F. ; Simserides, Constantinos ; Paspalakis, Emmanuel

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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(3), and χ(5). We also explore the dependence of χ(1), χ(3), and χ(5) on the electron sheet density for a specific double GaAs/AlGaAs quantum well.

Published in:

Journal of Applied Physics  (Volume:108 ,  Issue: 3 )