Back to Search Start Over

Modeling of gain and phase dynamics in quantum dot amplifiers.

Authors :
Moreno, Pablo
Rossetti, Marco
Deveaud-Plédran, Benoît
Fiore, Andrea
Source :
Optical & Quantum Electronics. Feb2008, Vol. 40 Issue 2-4, p217-226. 10p. 1 Diagram, 6 Graphs.
Publication Year :
2008

Abstract

By means of an electron hole rate equation model we explain the phase dynamics of a quantum dot semiconductor optical amplifier and the appearance of different decay times observed in pump and probe experiments. The ultrafast hole relaxation leads to a first ultrafast recovery of the gain, followed by electron relaxation and, in the nanosecond timescale, radiative and non-radiative recombinations. The phase dynamics is slower and is affected by thermal redistribution of carriers within the dot. We explain the ultrafast response of quantum dot amplifiers as an effect of hole escape and recombination without the need to assume Auger processes. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03068919
Volume :
40
Issue :
2-4
Database :
Academic Search Index
Journal :
Optical & Quantum Electronics
Publication Type :
Academic Journal
Accession number :
33543199
Full Text :
https://doi.org/10.1007/s11082-008-9219-4