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Proceedings Paper

Electrons and photons in mesoscopic structures: quantum dots in a photonic crystal and in a microcavity
Author(s): Sergey V. Gaponenko; A. M. Kapitonov; Leonid I. Gurinovich; V. N. Bogomolov; Mikhail V. Artemyev; A. L. Rogach; Alexander Eychmueller
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Paper Abstract

Mesoscopic structures with characteristic size either of the order of an electron de Broglie wavelength in semiconductors (1 - 10 nm) or close to the optical photon wavelength (100 - 1000 nm) exhibit non-trivial properties due to modified electron or photon density of states. 3D spatial confinement of electrons in nanocrystals (quantum dots) results in size- dependent energies and probabilities of optical transitions. The photon density of states can be modified in structures with strong modulation of the refractive index in three dimensions (photonic crystals) and in microcavities. Because of the essentially different electron and photon wavelengths, electron and photon densities of states can be engineered separately within the same mesostructure. We report here on synthesis and properties of semiconductor quantum dots corresponding to the strong confinement limit embedded either in a photonic crystal exhibiting a pseudogap or in a planar microcavity. We show that the interplay of electron and photon confinement within the same structure opens a way towards novel light sources with controllable spontaneous emission. Spontaneous emission which is not an inherent property of quantum systems but a result of their interaction with electromagnetic vacuum can be either promoted or inhibited depending on the modification of the photon density of states in a given mesostructure.

Paper Details

Date Published: 15 March 1999
PDF: 4 pages
Proc. SPIE 3734, ICONO '98: Fundamental Aspects of Laser-Matter Interaction and New Nonlinear Optical Materials and Physics of Low-Dimensional Structures, (15 March 1999); doi: 10.1117/12.342373
Show Author Affiliations
Sergey V. Gaponenko, Institute of Molecular and Atomic Physics (Belarus)
A. M. Kapitonov, Institute of Molecular and Atomic Physics (Belarus)
Leonid I. Gurinovich, Institute of Molecular and Atomic Physics (Belarus)
V. N. Bogomolov, A.F. Ioffe Physical-Technical Institute (Russia)
Mikhail V. Artemyev, Belarus State Univ. (Belarus)
A. L. Rogach, Belarus State Univ. (Belarus)
Alexander Eychmueller, Univ. of Hamburg (Germany)

Published in SPIE Proceedings Vol. 3734:
ICONO '98: Fundamental Aspects of Laser-Matter Interaction and New Nonlinear Optical Materials and Physics of Low-Dimensional Structures
Konstantin N. Drabovich; V. I. Emelyanova; Vladimir A. Makarov, Editor(s)

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