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Transverse mode instability analysis in fiber amplifiers

Transverse mode instability analysis in fiber amplifiers
Transverse mode instability analysis in fiber amplifiers
Mode instabilities in fiber amplifiers are analyzed by a new approach, considering the stability of the steady state FM amplification in the presence of transverse amplitude and/or phase perturbations, taking into account the effects of population inversion and thermal loading due to quantum-defect heating. Population inversion contribution to instability is shown to be dominant at low powers and high inversion. Under high powers and low inversion (high amplifier saturation) the thermal effects dominate the instability behavior. A simple and easy to interpret TMI power threshold formula is derived for the first time.
Zervas, Michael
1840a474-dd50-4a55-ab74-6f086aa3f701
Zervas, Michael
1840a474-dd50-4a55-ab74-6f086aa3f701

Zervas, Michael (2017) Transverse mode instability analysis in fiber amplifiers. Proceedings of SPIE, 10083, [100830M]. (doi:10.1117/12.2252435).

Record type: Article

Abstract

Mode instabilities in fiber amplifiers are analyzed by a new approach, considering the stability of the steady state FM amplification in the presence of transverse amplitude and/or phase perturbations, taking into account the effects of population inversion and thermal loading due to quantum-defect heating. Population inversion contribution to instability is shown to be dominant at low powers and high inversion. Under high powers and low inversion (high amplifier saturation) the thermal effects dominate the instability behavior. A simple and easy to interpret TMI power threshold formula is derived for the first time.

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SPIE 10083 100830M 2017 Zervas - Version of Record
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Accepted/In Press date: 28 January 2017
e-pub ahead of print date: 17 March 2017
Published date: 17 March 2017
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 410117
URI: http://eprints.soton.ac.uk/id/eprint/410117
PURE UUID: 9b1b327c-aa1d-4730-b404-00a00def237f
ORCID for Michael Zervas: ORCID iD orcid.org/0000-0002-0651-4059

Catalogue record

Date deposited: 03 Jun 2017 04:03
Last modified: 10 Jan 2022 02:34

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