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Proceedings Article

Direct interband light absorption in strongly prolated ellipsoidal quantum dots' ensemble with modified Pöschl-Teller effective potential

[+] Author Affiliations
K. G. Dvoyan, E. M. Kazaryan, A. A. Tshantshapanyan

Russian-Armenian (Slavic) State Univ. (Armenia)

D. B. Hayrapetyan

Russian-Armenian (Slavic) State Univ. (Armenia) and State Engineering Univ. of Armenia (Armenia)

Proc. SPIE 7998, International Conference on Laser Physics 2010, 79981F (March 04, 2011); doi:10.1117/12.891403
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From Conference Volume 7998

  • International Conference on Laser Physics 2010
  • Aram V. Papoyan
  • Ashtarak, Armenia | October 12, 2010

abstract

Within the framework of adiabatic approximation the energy levels and direct interband light absorption in a strongly prolated ellipsoidal quantum dot are studied. For treatment of the "slow" subsystem modified Pöschl-Teller effective potential is used. It is shown that the low-energy levels of the spectrum are equidistant. Analytical expressions for the particle energy spectrum and absorption threshold frequencies in strong quantization regime are obtained. Selection rules for quantum transitions, absorption edge and absorption coefficient are revealed. Size dispersion distribution of quantum dots by the minor semiaxe by two experimentally realizing distribution, Lifshits-Slezov and Gaussian functions, have been taken into account.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

K. G. Dvoyan ; D. B. Hayrapetyan ; E. M. Kazaryan and A. A. Tshantshapanyan
"Direct interband light absorption in strongly prolated ellipsoidal quantum dots' ensemble with modified Pöschl-Teller effective potential", Proc. SPIE 7998, International Conference on Laser Physics 2010, 79981F (March 04, 2011); doi:10.1117/12.891403; http://dx.doi.org/10.1117/12.891403


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