Electron-interface-longitudinal-optical phonon scattering rates in quantum cascade lasers

Yao-Ming Mu; Shin Shem Pei

doi:10.1117/12.474397

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25 July 2003 Electron-interface-longitudinal-optical phonon scattering rates in quantum cascade lasers

Yao-Ming Mu, Shin Shem Pei

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Proceedings Volume 4986, Physics and Simulation of Optoelectronic Devices XI; (2003) https://doi.org/10.1117/12.474397
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

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.

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Yao-Ming Mu and Shin Shem Pei "Electron-interface-longitudinal-optical phonon scattering rates in quantum cascade lasers", Proc. SPIE 4986, Physics and Simulation of Optoelectronic Devices XI, (25 July 2003); https://doi.org/10.1117/12.474397

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