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Wavelength dependence of efficiency limiting mechanisms in Type-I Mid-infrared GaInAsSb/GaSb lasers

Eales, Timothy, Marko, Igor, Ikyo, BA, Adams, Alfred, Arafin, S, Sprengel, S, Amann, M-C and Sweeney, Stephen (2017) Wavelength dependence of efficiency limiting mechanisms in Type-I Mid-infrared GaInAsSb/GaSb lasers IEEE Journal of Selected Topics in Quantum Electronics, 23 (6).

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Abstract

The efficiency limiting mechanisms in type-I GaInAsSb-based quantum well (QW) lasers, emitting at 2.3 μm, 2.6 μm and 2.9 μm, are investigated. Temperature characterization techniques and measurements under hydrostatic pressure identify an Auger process as the dominant non-radiative recombination mechanism in these devices. The results are supplemented with hydrostatic pressure measurements from three additional type-I GaInAsSb lasers, extending the wavelength range under investigation from 1.85-2.90 μm. Under hydrostatic pressure, contributions from the CHCC and CHSH Auger mechanisms to the threshold current density can be investigated separately. A simple model is used to fit the non-radiative component of the threshold current density, identifying the dominance of the different Auger losses across the wavelength range of operation. The CHCC mechanism is shown to be the dominant non-radiative process at longer wavelengths (> 2 μm). At shorter wavelengths (< 2 μm) the CHSH mechanism begins to dominate the threshold current, as the bandgap approaches resonance with the spin-orbit split-off band.

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute
Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Eales, Timothyt.eales@surrey.ac.ukUNSPECIFIED
Marko, IgorI.Marko@surrey.ac.ukUNSPECIFIED
Ikyo, BAUNSPECIFIEDUNSPECIFIED
Adams, AlfredAlf.Adams@surrey.ac.ukUNSPECIFIED
Arafin, SUNSPECIFIEDUNSPECIFIED
Sprengel, SUNSPECIFIEDUNSPECIFIED
Amann, M-CUNSPECIFIEDUNSPECIFIED
Sweeney, StephenS.Sweeney@surrey.ac.ukUNSPECIFIED
Date : 31 March 2017
Funders : EPSRC
Identification Number : https://doi.org/10.1109/JSTQE.2017.2687823
Copyright Disclaimer : Copyright 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Uncontrolled Keywords : Auger recombination, Interband Mid-IR lasers, MIR devices, Quantum well lasers.
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 24 Mar 2017 15:50
Last Modified : 04 Jul 2017 17:03
URI: http://epubs.surrey.ac.uk/id/eprint/813853

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