Intrinsic non-linearities in exciton-cavity-coupled systems
We investigate the mechanisms leading to the optical non-linearities observed on a strongly excited semiconductor microcavity containing quantum wells. This study of a coupled exciton-cavity system is possible owing to the availability of a sample of exceptionally high quality, permitting to exclude effects of disorder and inhomogeneous broadening. Sub-picosecond pump and probe experiments are performed, in the regime of an incoherent exciton gas of high density. For such a gas the dephasing due to collisions is not efficient enough to cause the break-down of the strong coupling and hence the collapse of the Rabi splitting. Phase-space filling and exchange effects are the dominant mechanisms. (C) 1999 Elsevier Science B.V. All rights reserved.
Swiss Fed Inst Technol, PH Ecublens, Dept Phys, CH-1015 Lausanne, Switzerland. Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, CA, Italy. Univ Cagliari, Ist Nazl Fis Mat, I-09042 Monserrato, CA, Italy. Saba, M, Swiss Fed Inst Technol, PH Ecublens, Dept Phys, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 267TP
Times Cited: 2
Cited Reference Count: 4
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Record created on 2007-08-31, modified on 2016-08-08