Influence of carrier relaxation on the dynamics of stimulated emission in microcavity lasers

verfasst von

M. Hilpert, H. Klann, M. Hofmann, C. Ellmers, Michael Oestreich, H. C. Schneider, F. Jahnke, Stephan W. Koch, Wolfgang W. Rühle, H. D. Wolf, D. Bernklau, H. Riechert

Abstract

The influence of carrier relaxation on the emission dynamics of a semiconductor microcavity laser is investigated using femtosecond optical excitation. For moderate excitation intensities, the dynamics of the output laser pulse becomes significantly slower when the photon energy of the pump laser is tuned from the quantum well band-gap energy towards higher energies. Theoretical calculations reproduce this trend only if the interaction-induced dephasing of the polarization driven by the pump pulse, the formation, and relaxation of the nonequilibrium carrier distribution as well as the chirp of the excitation pulse are taken into account. Additionally, band-structure effects such as excitation of light holes influence the thermalization dynamics and lead to discontinuities in the general trend.

Externe Organisation(en)

Max-Planck-Institut für Festkörperforschung
Philipps-Universität Marburg
Siemens AG

Typ

Artikel

Journal

Applied Physics Letters

Band

71

Seiten

3761-3763

Anzahl der Seiten

3

ISSN

0003-6951

Publikationsdatum

29.12.1997

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Physik und Astronomie (sonstige)

Elektronische Version(en)

https://doi.org/10.1063/1.120498 (Zugang: Unbekannt)