Temperature dependence of pulsed polariton lasing in a GaAs microcavity

The second-order correlation function g(2)(τ = 0), input-output curves and pulse duration of the emission from a microcavity exciton-polariton system subsequent to picosecond-pulsed excitation are measured for different temperatures. At low temperatures a two-threshold behaviour emerges, which has b...

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Published inNew journal of physics Vol. 14; no. 8; pp. 83014 - 83025
Main Authors Tempel, Jean-Sebastian, Veit, Franziska, Aßmann, Marc, Kreilkamp, Lars Erik, Höfling, Sven, Kamp, Martin, Forchel, Alfred, Bayer, Manfred
Format Journal Article
LanguageEnglish
Published IOP Publishing 14.08.2012
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Summary:The second-order correlation function g(2)(τ = 0), input-output curves and pulse duration of the emission from a microcavity exciton-polariton system subsequent to picosecond-pulsed excitation are measured for different temperatures. At low temperatures a two-threshold behaviour emerges, which has been attributed to the onset of polariton lasing and conventional lasing at the first and the second threshold, respectively. We observe that polariton lasing is stable up to temperatures comparable with the exciton binding energy. At higher temperatures a single threshold displays the direct transition from thermal emission to photon lasing.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/14/8/083014