Dominant role of many-body effects on the carrier distribution function of quantum dot lasers

The effects of free-carrier-induced shift and broadening on the carrier distribution function are studied considering different extreme cases for carrier statistics (Fermi-Dirac and random carrier distributions) as well as quantum dot (QD) ensemble inhomogeneity and state separation using a Monte Ca...

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Bibliographic Details
Published inApplied physics express Vol. 9; no. 3; pp. 32705 - 32708
Main Authors Peyvast, Negin, Zhou, Kejia, Hogg, Richard A., Childs, David T. D.
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.03.2016
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Summary:The effects of free-carrier-induced shift and broadening on the carrier distribution function are studied considering different extreme cases for carrier statistics (Fermi-Dirac and random carrier distributions) as well as quantum dot (QD) ensemble inhomogeneity and state separation using a Monte Carlo model. Using this model, we show that the dominant factor determining the carrier distribution function is the free carrier effects and not the choice of carrier statistics. By using empirical values of the free-carrier-induced shift and broadening, good agreement is obtained with experimental data of QD materials obtained under electrical injection for both extreme cases of carrier statistics.
ISSN:1882-0778
1882-0786
DOI:10.7567/APEX.9.032705