Linewidth of a polariton laser: Theoretical analysis of self-interaction effects

Details Linewidth of a polariton laser: Theoretical analysis of self-interaction effects Linewidth of a polariton laser: Theoretical analysis of self-interaction effects

2003-03-24

arxiv.org/abs/cond-mat/0303494v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, accepted for publication in Phys. Rev. B (Rapid Communications)

Scientific paper

10.1103/PhysRevB.67.161310

Polaritons in semiconductor microcavities can experience a Bose-Einstein condensation experimentally detectable in the spectrum of the emitted light. Scattering with noncondensed particles as well as self-interaction in the condensate provoke phase-diffusion limiting the coherence of the polariton condensate. We present a theoretical analysis of self-interaction effects on the lineshape of the emission from a polariton laser. Our calculations, for CdTe microcavities, show that there is an optimum pump at which the linewidth of the emitted light is reduced down to 1 $\mu$ eV.

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