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

Peyvast, N., Zhou, K., Hogg, R. A. and Childs, D. (2016) Dominant role of many-body effects on the carrier distribution function of quantum dot lasers. Applied Physics Express, 9(3), 032705. (doi: 10.7567/APEX.9.032705)

Abstract

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.

• Item Type: Articles
• Additional Information: The authors gratefully acknowledge the supply of QD laser material by QD Laser Inc. (Japan). We also acknowledge support from EPSRC under project EP/I018328/1.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Hogg, Professor Richard and Childs, Dr David
• Authors: Peyvast, N., Zhou, K., Hogg, R. A., and Childs, D.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Applied Physics Express
• Publisher: IOP Publishing
• ISSN: 1882-0778
• ISSN (Online): 1882-0786
• Copyright Holders: Copyright © 2016 The Japan Society of Applied Physics
• First Published: First published in Applied Physics Express 9(3):032705
• Publisher Policy: Reproduced under a Creative Commons License