Pressure and temperature effects on the third-order nonlinear optical properties in GaAs quantum dots

This work is used in the density matrix formalism and the effective mass approximation to study the third harmonic generation coefficient in a GaAs disc-shaped quantum dot with parabolic confinement potential. It is discussed the strong and weak confinement regime. The results show that the third ha...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2012-12, Vol.407 (24), p.4773-4776
Main Authors: Duque, C.M., Mora-Ramos, M.E., Duque, C.A.
Format: Article
Language:English
Subjects:
Coefficients
Condensed matter
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Confinement
Density
Exact sciences and technology
Gallium arsenide
Gallium arsenides
Harmonic generations
Hydrostatic pressure
Nonlinear optics
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Physics
Quantum dots
Temperature
Third harmonic generation
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Summary:This work is used in the density matrix formalism and the effective mass approximation to study the third harmonic generation coefficient in a GaAs disc-shaped quantum dot with parabolic confinement potential. It is discussed the strong and weak confinement regime. The results show that the third harmonic generation coefficient is strongly dependent on the excitonic pair localization. The study is extended to consider effects such as hydrostatic pressure and temperature to show that it is possible to induce a blue-shift and/or red-shift on the resonant peaks of the third harmonic generation coefficient.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2012.08.026