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Photon lasing in a GaAs microcavity: similarities with a polariton condensate

Authors
  • Bajoni, Daniele
  • Senellart, Pascale
  • Lemaître, Aristide
  • Bloch, Jacqueline
Type
Published Article
Publication Date
Nov 19, 2007
Submission Date
Sep 27, 2007
Identifiers
DOI: 10.1103/PhysRevB.76.201305
Source
arXiv
License
Unknown
External links

Abstract

We study experimentally the lasing regime of a GaAs based microcavity sample under strong optical pumping. The very same sample exhibits the strong coupling regime at low excitation power with a Rabi splitting as large as 15 meV. We show that some features which may be considered as experimental evidence of polariton Bose Einstein condensation are also observed in the weak coupling regime when the cavity is behaving as a regular photon laser. In particular, the emission pattern in the lasing regime displays a sharp peak near the energy minimum followed by a Boltzmann distribution at higher energies.

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