Ultrafast response of tunnel injected quantum dot based semiconductor optical amplifiers in the 1300 nm range

Pulka, J. and Piwonski, T. and Huyet, G. and Houlihan, J. and Semenova, E. and Lematre, A. and Merghem, K. and Martinez, A. and Ramdane, A. (2012) Ultrafast response of tunnel injected quantum dot based semiconductor optical amplifiers in the 1300 nm range. Applied Physics Letters, 100 (7). ISSN 0003-6951

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Abstract

The ultrafast gain and refractive index dynamics of tunnel injected quantum dot based semiconductor optical amplifiers in the 1300 nm range are investigated using a heterodyne pump probe technique. In the gain regime, ground state wavelengths exhibit full gain recovery in less than 10 ps up to 3 times transparency, attributed to enhanced carrier refilling via the injector layer. The effect of the injector can also been seen in unusual phase dynamics at excited state wavelengths at this injection level.

Item Type:	Article
Additional Information:	Funding Information: The authors would like to thank Bryan Kelleher for proof reading the manuscript. This study has been supported by Science Foundation Ireland under the Grant No. 07/SRC/I1173 and 07/IN.1/I929, the Higher Education Authority Program for Research in Third Level Institutions (2007-2011) via the INSPIRE program, the EU ITN project PHOPHET, and both the Irish Research Council for Science, Engineering and Technology and the French organisation Egide through the Ulysses project.
Uncontrolled Keywords:	/dk/atira/pure/subjectarea/asjc/3100/3101
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Depositing User:	Admin SSL
Date Deposited:	19 Oct 2022 23:03
Last Modified:	17 Jul 2023 03:45
URI:	http://repository-testing.wit.ie/id/eprint/3809

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