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Exciton-polariton dynamics in a GaAs bulk microcavity

✍ Scribed by S. Ceccherini; M. Gurioli; F. Bogani; M. Colocci; A. Tredicucci; F. Bassani; F. Beltram; L. Sorba

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 61 KB
Volume: 23
Category: Article
ISSN: 0749-6036
DOI: 10.1006/spmi.1996.0277

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✦ Synopsis

We present a full analysis of exciton dynamics in a GaAs λ/2 bulk microcavity following excitation by ultrafast laser pulses. Coherent dynamics was probed by means of an interferometric technique; beating and dephasing times were studied for various excitation intensities. At high incident power, population effects begin to show up reducing exciton oscillator strength and suppressing Rabi splitting. This feature produces marked non-linearities in the input-output characteristic of the optical functions, which were studied in view of reaching bistable operation. Theoretical calculations performed within the transfer-matrix framework show good agreement with experimental results.

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