Direct interband absorption of light in the ensemble of cylindrical quantum dots having strongly oblate elliptical cross-section

Karen G. Dvoyan

doi:10.1117/12.923566

25 January 2012 Direct interband absorption of light in the ensemble of cylindrical quantum dots having strongly oblate elliptical cross-section

Karen G. Dvoyan

Author Affiliations +

Proceedings Volume 8414, Photonics and Micro- and Nano-structured Materials 2011; 84140O (2012) https://doi.org/10.1117/12.923566
Event: Photonics and Micro- and Nano- structured Materials 2011, 2011, Yerevan, Armenia

Abstract

In the framework of adiabatic approximation the energy levels and direct interband absorption of light in the ensemble of cylindrical quantum dots' having strongly oblate elliptical cross-section are studied. Analytical expressions for the energy spectrum and wave functions of the electron are obtained. For the "slow" subsystem effective potential approximation, parabolic and modified Pöschl-Teller potentials are used. Low-energy levels in the energy spectrum are shown to be equidistant in both cases. Modified Pöschl-Teller potential approximation allows taking into account violation of equidistance of energy levels for higher exited states. Absorption coefficient and edge frequencies are obtained in the strong size quantization regime. Corresponding selection rules for quantum transitions are found.

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Karen G. Dvoyan "Direct interband absorption of light in the ensemble of cylindrical quantum dots having strongly oblate elliptical cross-section", Proc. SPIE 8414, Photonics and Micro- and Nano-structured Materials 2011, 84140O (25 January 2012); https://doi.org/10.1117/12.923566

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