Femtosecond superradiant emission in inorganic semiconductors

Details Femtosecond superradiant emission in inorganic semiconductors Femtosecond superradiant emission in inorganic semiconductors

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009rpph...72g6501v&link_type=abstract

Reports on Progress in Physics, Volume 72, Issue 7, pp. 076501 (2009).

Physics

8

Scientific paper

A review of an experimental study of superradiance in semiconductor inorganic structures is presented. It is demonstrated that unique properties of superradiant emission are determined by unusual properties of electrons and holes, namely, the formation of BCS-like state in a system of collectively paired electrons and holes. This can adequately explain all features of superradiance, including its femtosecond pulse duration, record peak power, optical spectrum, spatial and temporal coherency and macroscopically large fluctuations. The effect of non-equilibrium condensation of electrons and holes in the phase domain at room temperature is experimentally demonstrated. The critical temperature of condensation in a strongly degenerate system of electrons and holes is finally theoretically estimated.

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