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 and Techniques, 48(4), pp. 639-644. (doi: 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: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: 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 and Techniques
• ISSN: 0018-9480
• Copyright Holders: Copyright © 2000 Institute of Electrical and Electronics Engineers
• First Published: First published in IEEE Transactions on Microwave Theory and Techniques 48(4):639-644
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher