Complex characterization of short-pulse propagation through InAs/InP quantum-dash optical amplifiers: From the quasi-linear to the two-photon-dominated regime

Amir Capua, Abigael Saal, Ouri Karni, Gadi Eisenstein, Johann Peter Reithmaier, Kresten Yvind

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We describe direct measurements at a high temporal resolution of the changes experienced by the phase and amplitude of an ultra-short pulse upon propagation through an inhomogenously broadened semiconductor nanostructured optical gain medium. Using a cross frequency-resolved optical gating technique, we analyze 150 fs-wide pulses propagating along an InP based quantum dash optical amplifier in both the quasi-linear and saturated regimes. For very large electrical and optical excitations, a second, trailing peak is generated and enhanced by a unique two-photon-induced amplification process.

Original languageAmerican English
Pages (from-to)A347-A353
JournalOptics Express
Volume20
Issue number1
DOIs
StatePublished - 2 Jan 2012
Externally publishedYes

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