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Proceedings Paper

Electron-interface-longitudinal-optical phonon scattering rates in quantum cascade lasers
Author(s): Yao-Ming Mu; Shin Shem Pei
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Paper Abstract

The intersubband electron transition rates assisted by interface-longitudinal-optical-phonon emission in a quantum cascade laser with a four quantum-well active region are evaluated using Femi’s golden rule. The electron energy and wavefunction of nonparabolic conduction band are calculated using an eight-band k•p method with the axial approximation. The energy dispersions of interface-longitudinal-optical-phonon modes and associated electrostatic potentials are studied within the framework of macroscopic dielectric continuum model. The numerical results show that AlAs-like interface phonon modes give larger contribution to intersubband transition rates between lower energy states than other interface phonon modes.

Paper Details

Date Published: 25 July 2003
PDF: 10 pages
Proc. SPIE 4986, Physics and Simulation of Optoelectronic Devices XI, (25 July 2003); doi: 10.1117/12.474397
Show Author Affiliations
Yao-Ming Mu, Univ. of Houston (United States)
Shin Shem Pei, Univ. of Houston (United States)

Published in SPIE Proceedings Vol. 4986:
Physics and Simulation of Optoelectronic Devices XI
Marek Osinski; Hiroshi Amano; Peter Blood, Editor(s)

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