Direct evidence of reduced dynamic scattering in the lower polariton of a semiconductor microcavity

Borri, Paola ORCID: https://orcid.org/0000-0002-7873-3314, Jensen, J., Langbein, Wolfgang Werner ORCID: https://orcid.org/0000-0001-9786-1023 and Hvam, J. 2000. Direct evidence of reduced dynamic scattering in the lower polariton of a semiconductor microcavity. Physical Review B 61 (20) , R13377-R13380. 10.1103/PhysRevB.61.R13377

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Abstract

The temperature dependent linewidths of homogeneously broadened GaAs/AlxGa1-xAs microcavity polaritons are investigated. The linewidths of the lower, middle, and upper polariton resonances are measured directly from reflection spectra at normal incidence (k‖=0). The linewidth of the lower polariton is found to be smaller than the linewidths of the middle and upper polaritons at all investigated temperatures ranging from 11 to 100 K. The results clearly show the reduction of dynamic scattering processes in the lower polariton compared to the middle and upper polaritons, in agreement with theoretical predictions in literature. A nontrivial temperature dependence of the linewidth is found and its physical origin is discussed.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy Biosciences
Subjects:	Q Science > QC Physics
Publisher:	American Physical Society
ISSN:	0163-1829
Last Modified:	25 Oct 2022 09:47
URI:	https://orca.cardiff.ac.uk/id/eprint/60024

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