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Proceedings Paper

Coherence properties of semiconductor nanostructures
Author(s): Roland Levy; Bernd Hoenerlage; Pierre Gilliot
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Paper Abstract

We study the coherence times of CuBr nanocrystals (quantum dots) in a borosilicate matrix under resonant excitation. Measurements are performed in two different experiments: Degenerate four-wave mixing with pulses of approximately 100 fs duration and spectral hole burning using a nanosecond excitation. Our results show a dependence of the dephasing times on the excitation intensity, and, when extrapolated to low intensity, a longer coherence time under fs than ns excitation. This result is tentatively explained as being due to spectral diffusion in the case of ns excitation.

Paper Details

Date Published: 23 April 1998
PDF: 7 pages
Proc. SPIE 3277, Ultrafast Phenomena in Semiconductors II, (23 April 1998); doi: 10.1117/12.306173
Show Author Affiliations
Roland Levy, Institut de Physique et Chimie des Materiaux de Strasbourg/CNRS (France)
Bernd Hoenerlage, Institut de Physique et Chimie des Materiaux de Strasbourg/CNRS (France)
Pierre Gilliot, Institut de Physique et Chimie des Materiaux de Strasbourg/CNRS (France)


Published in SPIE Proceedings Vol. 3277:
Ultrafast Phenomena in Semiconductors II
Kong-Thon F. Tsen; Harold R. Fetterman, Editor(s)

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