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Proceedings Paper

Carrier cooling effects on the saturation characteristics of quantum well absorbers
Author(s): Mark P. Mullane; Alexander V. Uskov; John Gerard McInerney
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Paper Abstract

The effects of carrier cooling on the saturation characteristics of quantum well absorbers are theoretically investigated. A comprehensive many-body model is employed, and both excitonic effects and bandgap renormalization are shown to play a significant role. The detailed interplay between band-filling and many-body effects at low carrier temperatures is shown to lead to saturation characteristics that are highly spectrally dependent, and that cannot in general be identified by a linear saturation characteristic. In addition, a spectral regime of enhanced fast saturation is identified at or slightly below the exciton peak energy, which may provide a mechanism for previously observed mode-locking behavior.

Paper Details

Date Published: 14 July 2000
PDF: 7 pages
Proc. SPIE 3944, Physics and Simulation of Optoelectronic Devices VIII, (14 July 2000); doi: 10.1117/12.391405
Show Author Affiliations
Mark P. Mullane, Univ. College Cork/National Univ. of Ireland (Ireland)
Alexander V. Uskov, P.N. Lebedev Physical Institute and National Univ. College Cork/Univ. of Ireland (Russia)
John Gerard McInerney, Univ. College Cork/National Univ. of Ireland and Optical Sciences Ctr./Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 3944:
Physics and Simulation of Optoelectronic Devices VIII
Rolf H. Binder; Peter Blood; Marek Osinski, Editor(s)

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