We study the emission properties of confined polariton states in shallow zero-dimensional traps under non-resonant excitation. We evidence several relaxation regimes. For slightly negative photon-exciton detuning, we observe a nonlinear increase of the emission intensity, characteristic of carrier-carrier scattering assisted relaxation under strong-coupling regime. This demonstrates the efficient relaxation towards a confined state of the system. For slightly positive detuning, we observe the transition from strong to weak coupling regime and then to single-mode lasing.
@article{arxiv.0905.3186,
title = {Nonlinear relaxation of 0-dimension-trapped microcavity polaritons},
author = {Ounsi El Daif and Gael Nardin and Taofiq K. Paraiso and Augustin Baas and Maxime Richard and J. -P. Brantut and Francois Morier-Genoud and Benoit Deveaud-Pledran and Thierry Guillet},
journal= {arXiv preprint arXiv:0905.3186},
year = {2009}
}
Comments
Citations updated with respect to the journal version, and figures made clearer. 8 pages, 4 figures