Condensation kinetics of microcavity polaritons with scattering by phonons and polaritons

T. D. Doan, Huy Thien Cao, D. B. Tran Thoai, and H. Haug
Phys. Rev. B 72, 085301 – Published 1 August 2005

Abstract

We present numerical studies of the exciton polariton condensation kinetics in microcavities for the combined action of polariton-polariton and polariton-acoustic phonon scattering both for quasi-stationary and picosecond pulse excitation, respectively. For excitations of nearly resonant polaritons mainly the polariton-polariton scattering mechanism results in a condensation on the minimum of the lower polariton branch at relatively low areal polariton densities of the order of 1091010cm2. The simultaneously acting polariton-phonon scattering increases the number of condensed particles considerably by providing a heat dissipation from the polariton gas to the lattice. For nonresonant excitations at large k values the considered scattering mechanisms cannot support a polariton condensation. Above (below) laser threshold there exists a (no) polariton condensate and the polariton distribution of the noncondensed particles can be fitted by a Bose-Einstein (Maxwell-Boltzmann) distribution. Our results for 3ps pulse excitation are in very good agreement with recent experimental observations of Yamamoto et al.

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  • Received 23 March 2005

DOI:https://doi.org/10.1103/PhysRevB.72.085301

©2005 American Physical Society

Authors & Affiliations

T. D. Doan, Huy Thien Cao, and D. B. Tran Thoai

  • Ho Chi Minh City Institute of Physics, Vietnam Center for Natural Science and Technology, 1 Mac Dinh Chi, Ho Chi Minh City, Vietnam

H. Haug

  • Institut für Theoretische Physik, J.W. Goethe-Universität Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt a.M., Germany

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Issue

Vol. 72, Iss. 8 — 15 August 2005

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