A nearly instantaneous gain response in quantum dash based optical amplifiers

A. Capua; G. Eisenstein; J. P. Reithmaier

doi:10.1063/1.3494528

A nearly instantaneous gain response in quantum dash based optical amplifiers

A. Capua^*, G. Eisenstein, J. P. Reithmaier

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

We describe a unique phenomenon occurring in InAs/InP quantum dash amplifiers: a nearly instantaneous gain response taking place across the entire inhomogeneously broadened gain spectrum. The phenomenon is induced by a 100-150 fs pulse and is observable using multiwavelength pump probe measurements. Large bias levels and an intense pump pulse are imperative for enacting the ultrafast mechanism which is due to a combination of the gain inhomogeneity, nonlinear two photon absorption and the quantum wirelike density of state function.

Original language	English
Article number	131108
Journal	Applied Physics Letters
Volume	97
Issue number	13
DOIs	https://doi.org/10.1063/1.3494528
State	Published - 27 Sep 2010
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the project “GOSPEL” of the European Commission.

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A nearly instantaneous gain response in quantum dash based optical amplifiers

Abstract

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