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Separation of coherent and incoherent nonlinearities in a heterodyne pump-probe experiment

Borri, Paola, Romstad, Francis, Langbein, Wolfgang Werner, Kelly, A., Mork, J. and Hvam, J. M. 2000. Separation of coherent and incoherent nonlinearities in a heterodyne pump-probe experiment. Optics Express 7 (3) , pp. 107-112. 10.1364/OE.7.000107

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Abstract

We demonstrate that the transient coherent nonlinearity (coherent artifact) affecting the pump-probe response of semiconductor optical amplifiers an be experimentally separated from the incoherent transient. The technique is based on measuring the mirror component of the coherent artifact which is a background-free four wave mixing signal at a different frequency with respect to the transmitted probe in a heterodyne detection scheme. Measurements on amplifiers of different length reveal strong deviations from the commonly expected symmetric shape of the coherent artifact in case of long waveguides.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Optical Society of America
ISSN: 1094-4087
Last Modified: 16 May 2019 23:09
URI: http://orca-mwe.cf.ac.uk/id/eprint/59846

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