Longitudinal optical phonon assisted polariton laser

Maragkou, M.; Grundy, A. J. D.; Ostatnický, T.; Lagoudakis, P. G.
September 2010
Applied Physics Letters;9/13/2010, Vol. 97 Issue 11, p111110
Academic Journal
We demonstrate the role of longitudinal optical (LO)-phonon assisted polariton relaxation in reducing the stimulation threshold in strongly coupled microcavities. When the energy of the relaxation bottleneck is one LO-phonon above the ground polariton state, we observe a tenfold improvement of the polariton relaxation rate in the linear regime, and a twofold reduction in the threshold to the nonlinear polariton lasing regime.


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