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).

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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: Times Cited: 0 Pulka, J. Piwonski, T. Huyet, G. Houlihan, J. Semenova, E. Lematre, A. Merghem, K. Martinez, A. Ramdane, A.
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 16:18
Last Modified: 22 Aug 2016 10:26
URI: http://repository.wit.ie/id/eprint/2007

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