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

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

Research output: Contribution to journalArticle

10 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)3761-3763
Number of pages3
JournalApplied Physics Letters
Volume71
Issue number26
StatePublished - Dec 29 1997
Externally publishedYes

Fingerprint

stimulated emission
excitation
lasers
pulses
pumps
trends
laser outputs
chirp
discontinuity
semiconductor lasers
quantum wells
energy
photons
polarization
interactions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Hilpert, M., Klann, H., Hofmann, M., Ellmers, C., Oestreich, M., Schneider, H. C., ... Riechert, H. (1997). Influence of carrier relaxation on the dynamics of stimulated emission in microcavity lasers. Applied Physics Letters, 71(26), 3761-3763.

Influence of carrier relaxation on the dynamics of stimulated emission in microcavity lasers. / Hilpert, M.; Klann, H.; Hofmann, M.; Ellmers, C.; Oestreich, M.; Schneider, H. C.; Jahnke, F.; Koch, Stephan W; Rühle, W. W.; Wolf, H. D.; Bernklau, D.; Riechert, H.

In: Applied Physics Letters, Vol. 71, No. 26, 29.12.1997, p. 3761-3763.

Research output: Contribution to journalArticle

Hilpert, M, Klann, H, Hofmann, M, Ellmers, C, Oestreich, M, Schneider, HC, Jahnke, F, Koch, SW, Rühle, WW, Wolf, HD, Bernklau, D & Riechert, H 1997, 'Influence of carrier relaxation on the dynamics of stimulated emission in microcavity lasers', Applied Physics Letters, vol. 71, no. 26, pp. 3761-3763.
Hilpert M, Klann H, Hofmann M, Ellmers C, Oestreich M, Schneider HC et al. Influence of carrier relaxation on the dynamics of stimulated emission in microcavity lasers. Applied Physics Letters. 1997 Dec 29;71(26):3761-3763.
Hilpert, M. ; Klann, H. ; Hofmann, M. ; Ellmers, C. ; Oestreich, M. ; Schneider, H. C. ; Jahnke, F. ; Koch, Stephan W ; Rühle, W. W. ; Wolf, H. D. ; Bernklau, D. ; Riechert, H. / Influence of carrier relaxation on the dynamics of stimulated emission in microcavity lasers. In: Applied Physics Letters. 1997 ; Vol. 71, No. 26. pp. 3761-3763.
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