Abstract

Ecole Polytechnique Fdrale de Lausanne, EPFL, CH-1015 Lausanne, SwitzerlandReceived 15 September 2003, accepted 18 September 2003Published online 2 February 2004PACS 73.21.Fg, 78.47.+p, 78.55.Cr, 78.67.DeWe present an experimental study of the properties of a dense electron–hole plasma in GaAs/AlGaAsquantum wells. A high spatial resolution Photoluminescence setup including spectral and temporal ana-lysis has been developed to test the possibility of collective emission from an electron-hole plasma.

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