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Nonlinear optical rectification in vertically coupled InAs/GaAs quantum dots under electromagnetic fields, pressure and temperature effects

Authors
Journal
Journal of Luminescence
0022-2313
Publisher
Elsevier
Volume
144
Identifiers
DOI: 10.1016/j.jlumin.2013.07.002
Keywords
  • Vertically Coupled Quantum Dots
  • Electromagnetic Fields
  • Nonlinear Optical Rectification
  • Pressure And Temperature
Disciplines
  • Physics

Abstract

Abstract In this paper we explore the effects of the structural dimensions, applied electromagnetic fields, hydrostatic pressure and temperature on the nonlinear optical rectification (NOR) in Vertically Coupled InAs/GaAs Quantum Dots (VCQDs). The analytical expression of the NOR is analyzed by using the density matrix formalism, the effective mass and the Finite Difference Method (FDM). Obtained results show that the NOR obtained with this coupled system is not a monotonic function of the barrier width, electromagnetic fields, pressure and temperature. Also, calculated results reveal that the resonant peaks of the NOR can be blue-shifted or red-shifted energies depending on the energy of the lowest confined states in the VCQDs structure. In addition, this condition can be controlled by changes in the structural dimensions and the external proofs mentioned above.

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