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Self-consistent analysis of carrier-transport and carrier-capture dynamics in quantum cascade intersubband semiconductor lasers

Kalna, K., Cheung, C.Y.L., Pierce, I., and Shore, K.A. (2000) Self-consistent analysis of carrier-transport and carrier-capture dynamics in quantum cascade intersubband semiconductor lasers. IEEE Transactions on Microwave Theory, 48 (4). pp. 639-644. ISSN 0018-9480 (doi:10.1109/22.841954)

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Publisher's URL: http://dx.doi.org/10.1109/22.841954

Abstract

A methodology for the self-consistent analysis of carrier transport and carrier capture aspects of the dynamics of quantum cascade intersubband semiconductor lasers is described in this paper. The approach is used to analyze two prototype quantum cascade lasers. The self-consistent analysis incorporates the calculation of the electron densities and temperatures in each subband, together with the intersubband relaxation time. In the calculation of the relaxation time, we take into account the electron interaction with polar optical and acoustic phonons, as well as electron degeneracy. In addition, we also calculate the capture time, considering backward processes that play a role in the electron transition from an injection into an active region. The calculations indicate intersubband relaxation times of order 1 ps and capture times of order 100 fs

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s):Kalna, Dr Karol
Authors: Kalna, K., Cheung, C.Y.L., Pierce, I., and Shore, K.A.
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Research Group:Device Modelling Group
Journal Name:IEEE Transactions on Microwave Theory
Publisher:Institute of Electrical and Electronics Engineers
ISSN:0018-9480
Copyright Holders:Copyright © 2000 Institute of Electrical and Electronics Engineers
First Published:First published in IEEE Transactions on Microwave Theory 48(4):639-644
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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