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Temperature Dependence of the Polariton Linewidth in a GaAs Quantum Well Microcavity
Author(s) -
Borri P.,
Jensen J.R.,
Langbein W.,
Hvam J.M.
Publication year - 2000
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200009)221:1<143::aid-pssb143>3.0.co;2-5
Subject(s) - laser linewidth , polariton , condensed matter physics , scattering , quantum well , spectral line , materials science , physics , optics , laser , quantum mechanics
The temperature dependent linewidths of the polariton resonances in a GaAs/AlGaAs single quantum well microcavity are measured. Due to the dominant homogeneous broadening of the investigated resonances, a direct linewidth analysis of the reflectivity spectra allows us to investigate the role of scattering mechanisms in the lower polariton branch compared to the middle and upper polaritons. We find that the lower polariton linewidth is smaller than the middle and upper polariton linewidths at all investigated temperatures from 11 to 100 K, in agreement with expectations in literature.