Refractive index dynamics of quantum dot based waveguide electroabsorbers

Piwonski, Tomasz and Pulka, Jaroslaw and Viktorov, Evgeny A. and Huyet, Guillaume and Houlihan, John (2010) Refractive index dynamics of quantum dot based waveguide electroabsorbers. Applied Physics Letters, 97 (5). ISSN 0003-6951

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Abstract

The refractive index dynamics of InAs/GaAs quantum dot based waveguide absorbers is studied using heterodyne pump-probe measurements. Absorption reduction due to the pump can be accompanied by either positive or negative refractive index changes depending on the wavelength used. This change in sign of the phase amplitude coupling can be understood by considering the atomlike nature of the quantum dot transitions involved.

Item Type:	Article
Additional Information:	Funding Information: The authors would like to gratefully acknowledge discussions with R. J. Manning. This study has been supported by Science Foundation Ireland under 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.
Uncontrolled Keywords:	/dk/atira/pure/subjectarea/asjc/3100/3101
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Depositing User:	Admin SSL
Date Deposited:	19 Oct 2022 23:05
Last Modified:	23 Jun 2023 19:40
URI:	http://repository-testing.wit.ie/id/eprint/3941

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