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arXiv · 0806.1691

Stimulated scattering and lasing of intersubband cavity polaritons

Simone De Liberato·Cristiano Ciuti
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Abstract

We present a microscopic theory describing the stimulated scattering of intersubband polariton excitations in a microcavity-embedded two-dimensional electron gas. In particular, we consider the polariton scattering induced by the spontaneous emission of optical phonons. Our theory demonstrates the possibility of final-state stimulation for the scattering of such composite excitations, accounting for the deviations from perfect bosonicity occurring at high excitation densities. By using realistic parameters for a GaAs semiconductor system, we predict how to achieve a quantum degenerate regime, leading to ultralow threshold lasing without population inversion.

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Simone De Liberato, Cristiano Ciuti. 2008-06-10. Stimulated scattering and lasing of intersubband cavity polaritons. https://doi.org/10.1103/physrevlett.102.136403

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