Refractive index dynamics of InAs/GaAs quantum dots

Crowley, M. T. and Houlihan, J. and Piwonski, T. and O'Driscoll, I. and Williams, D. P. and O'Reilly, E. P. and Uskov, A. V. and Huyet, G. (2013) Refractive index dynamics of InAs/GaAs quantum dots. Applied Physics Letters, 103 (2). ISSN 0003-6951

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The refractive index dynamics of an InAs/InGaAs/GaAs dots-in-a-well semiconductor optical amplifier is calculated and compared with experimental results. The fast and slow recovery timescales together with the behaviour with increasing injection are reproduced and explained in terms of the density of carriers available in upper quantum dot and continuum states. Also, a Coulomb-mediated shift of the dot susceptibility is suggested as responsible for the fast recovery of the phase.

Item Type: Article
Additional Information: Funding Information: This work was supported in part by Science Foundation Ireland (Contract No. 06/IN.1/I90).
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3101
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Depositing User: Admin SSL
Date Deposited: 19 Oct 2022 23:10
Last Modified: 07 Jun 2023 18:46

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