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Proceedings Paper

Dynamics of stimulated emission in InAs quantum dot laser structures measured in pump-probe experiments
Author(s): Alexander I. Tartakovskii; Kristian M. Groom; Ali M. Adawi; Aristide Lemaître; David J. Mowbray; Maurice S. Skolnick; Mark Hopkinson
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Paper Abstract

Non-linear carrier-photon dynamics are studied for optically pumped InAs quantum dot (QD) laser structures, using excitation into the GaAs barrier by two degenerate pump and probe laser pulses. The non-linear emission from QDs excited by the pump pulse is further amplified by the probe excitation. By varying the delay between the two pulses a very fast decay of the QD excited state emission is measured. Notably slower dynamics for the QD ground state are observed, governed by state filling phenomena, which result in gain saturation.

Paper Details

Date Published: 16 June 2004
PDF: 7 pages
Proc. SPIE 5352, Ultrafast Phenomena in Semiconductors and Nanostructure Materials VIII, (16 June 2004); doi: 10.1117/12.527694
Show Author Affiliations
Alexander I. Tartakovskii, Univ. of Sheffield (United Kingdom)
Kristian M. Groom, Univ. of Sheffield (United Kingdom)
Ali M. Adawi, Univ. of Sheffield (United Kingdom)
Aristide Lemaître, Univ. of Sheffield (United Kingdom)
David J. Mowbray, Univ. of Sheffield (United Kingdom)
Maurice S. Skolnick, Univ. of Sheffield (United Kingdom)
Mark Hopkinson, Univ. of Sheffield (United Kingdom)

Published in SPIE Proceedings Vol. 5352:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials VIII
Kong-Thon Tsen; Jin-Joo Song; Hongxing Jiang, Editor(s)

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