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Journal article · Preprint article

Nonlinear carrier dynamics in a quantum dash optical amplifier

By Hansen, Per Lunnemann1,2; Ek, Sara1,2; Yvind, Kresten2,3; Piron, Rozenn4; Mørk, Jesper1,2

From

Quantum and Laser Photonics, Department of Photonics Engineering, Technical University of Denmark1

Department of Photonics Engineering, Technical University of Denmark2

Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark3

FOTON4

Results of experimental pump-probe spectroscopy of a quantum dash optical amplifier biased at transparency are presented. Using strong pump pulses we observe a competition between free carrier absorption and two-photon induced stimulated emission that can have drastic effects on the transmission dynamics.

Thus, both enhancement as well as suppression of the transmission can be observed even when the amplifier is biased at transparency. A simple theoretical model taking into account two-photon absorption and free carrier absorption is presented that shows good agreement with the measurements.

Language: English
Publisher: IOP Publishing
Year: 2012
Pages: 013042
ISSN: 13672630
Types: Journal article and Preprint article
DOI: 10.1088/1367-2630/14/1/013042
ORCIDs: Yvind, Kresten and Mørk, Jesper
Keywords

cond-mat.mes-hall

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