Ultrafast spectroscopy of carriers and excitons in semiconductor microcavities

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Experiments probing both the linear and nonlinear response of strongly coupled GaAs/AlGaAs microcavities using femtosecond spectroscopy are described. Vacuum-Rabi oscillations are observed following resonant coherent impulsive excitation, with a decay time equal to twice the cavity lifetime as expected. Off-resonant excitation results in a long (approximate to 600 ps) decay, resulting from the slow scattering of excitons into k approximate to 0 states, and thermalized luminescence, In the nonlinear response, a dynamic reduction in the normal-mode splitting is observed. In nonresonant excitation, this is followed by gain-switched lasing.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
1996
Language
English
Article Type
Article; Proceedings Paper
Keywords

QUANTUM-WELL STRUCTURES

Citation

PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS, v.33, no.1-3, pp.155 - 160

ISSN
0146-3535
DOI
10.1016/0960-8974(96)83634-5
URI
http://hdl.handle.net/10203/74154
Appears in Collection
EE-Journal Papers(저널논문)
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