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Exciton–Photon Dynamics in Weakly and Strongly Excited Semiconductor Microcavities
Author(s) -
Bongiovanni G.,
Mura A.,
Quochi F.,
Staehli J. L.,
Stanley R. P.,
Oesterle U.,
Houdré R.
Publication year - 1998
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/(sici)1521-3951(199803)206:1<375::aid-pssb375>3.0.co;2-h
Subject(s) - exciton , picosecond , physics , excitation , excited state , photon , atomic physics , semiconductor , condensed matter physics , biexciton , four wave mixing , saturation (graph theory) , nonlinear optics , laser , optics , optoelectronics , quantum mechanics , mathematics , combinatorics
We report on the optical response of a semiconductor microcavity featuring a strong exciton–photon coupling. The weak excitation regime is investigated experimentally by means of time‐resolved transmission and four‐wave mixing experiments. The influence of electronic disorder on the coherent exciton–photon dynamics is discussed in terms of the solutions of the Maxwell‐Bloch equations. The high excitation regime is investigated by using transient sub‐picosecond pump–probe experiments. Optical amplification of the probe beam (up to a factor of five), as well as a fundamental change of the optical spectra, have been found close to and above the exciton saturation density. The observed oscillations are corresponding to the Rabi frequency of the excitons in the pump field.