Nonlinear carrier dynamics in a quantum dash optical amplifier

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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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.
Original languageEnglish
JournalNew Journal of Physics
Publication date2012
Volume14
Issue1
Pages013042
ISSN1367-2630
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 3
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