Induced absorption dynamics in quantum dot based waveguide electroabsorbers

Piwonski, T. and Pulka, J. and Viktorov, E. A. and Huyet, G. and Manning, R. J. and Houlihan, J. and Mandel, P. and Erneux, T. (2010) Induced absorption dynamics in quantum dot based waveguide electroabsorbers. Applied Physics Letters, 97 (12). p. 3.

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Abstract

Two-color pump-probe measurements are used to study the carrier dynamics of InAs/GaAs quantum dots in a waveguide structure under reverse bias conditions. For the case of initially populating the ground state (GS), we find relaxation dynamics that include both absorptive and bleaching components in the excited state (ES) wavelength range. We reproduce the main features of this induced absorption dynamics using a simple model with an additional term for induced absorption at the ES due to carriers injected at the GS. The induced absorption dynamics includes multiple recovery timescales which can be attributed to phonon-assisted processes of GS/ES interaction. (C) 2010 American Institute of Physics. [doi:10.1063/1.3491805]

Item Type: Article
Additional Information: ISI Document Delivery No.: 653VC Times Cited: 2 Cited Reference Count: 13 Piwonski, T. Pulka, J. Viktorov, E. A. Huyet, G. Manning, R. J. Houlihan, J. Mandel, P. Erneux, T. Science Foundation Ireland (SFI) [SFI 07/IN.1/I929]; Irish Government [Cycle 4]; Institute of Technology Ireland; Tyndall National Access Program; Fonds National de la Recherche Scientifique (Belgium) This study has been supported by Science Foundation Ireland (SFI) under the Contract No. SFI 07/IN.1/I929, the INSPIRE Programme, funded by the Irish Government's Programme for Research in Third Level Institutions, Cycle 4, National Development Plan 2007-2013, and the Institute of Technology Ireland's Strand I Programme and the Tyndall National Access Program. The authors in Bruxelles acknowledge support of the Fonds National de la Recherche Scientifique (Belgium). AMER INST PHYSICS MELVILLE
Uncontrolled Keywords: LASER
Departments or Groups: Optics Research Group
Divisions: School of Science > Department of Computing, Maths and Physics
Depositing User: John Houlihan
Date Deposited: 19 Nov 2012 16:22
Last Modified: 22 Aug 2016 10:26
URI: http://repository.wit.ie/id/eprint/2001

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