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Recombination processes in midinfrared InGaAsSb diode lasers emitting at 2.37 µm

O'Brien, K., Sweeney, S. J., Adams, A. R., Murdin, B. N, Salhi, A., Rouillard, Y. and Joullié, A. (2006) Recombination processes in midinfrared InGaAsSb diode lasers emitting at 2.37 µm Applied Physics Letters, 051104 (2006).


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The temperature dependence of the threshold current of InGaAsSb/AlGaAsSb compressively strained lasers is investigated by analyzing the spontaneous emission from working laser devices through a window formed in the substrate metallization and by applying high pressures. It is found that nonradiative recombination accounts for 80% of the threshold current at room temperature and is responsible for the high temperature sensitivity. The authors suggest that Auger recombination involving hot holes is suppressed in these devices because the spin-orbit splitting energy is larger than the band gap, but other Auger processes persist and are responsible for the low T0 values.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Photonics
Faculty of Engineering and Physical Sciences > Physics
Authors :
O'Brien, K.
Sweeney, S.
Adams, A.
Murdin, B.
Salhi, A.
Rouillard, Y.
Joullié, A.
Date : 1 August 2006
DOI : 10.1063/1.2243973
Additional Information : K. O'Brien et al., Applied Physics Letters, 89, 051104(2006). Copyright (2006) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Depositing User : Mr Adam Field
Date Deposited : 27 May 2010 14:44
Last Modified : 06 Jul 2019 05:07

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