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Effects of perturbation relative phase on transverse mode instability gain

Effects of perturbation relative phase on transverse mode instability gain
Effects of perturbation relative phase on transverse mode instability gain

We have shown that the relative phase between the fundamental fiber mode and the transverse perturbation affects significantly the local transverse modal instability (TMI) gain. The gain variation is more pronounced as the core diameter increases. This finding can be used in conjunction with other proposed approaches to develop efficient strategies for mitigating TMI in high power fiber amplifiers and lasers. It also provides some physical insight on the physical origin of the observed large differences in the TMI threshold dependence on core diameter for narrow and broad linewidth operation.

high power fiber amplifiers, high power fiber lasers, phase perturbations, transverse mode instability
SPIE
Zervas, Michalis N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Zervas, Michalis N.
1840a474-dd50-4a55-ab74-6f086aa3f701

Zervas, Michalis N. (2018) Effects of perturbation relative phase on transverse mode instability gain. In Fiber Lasers XV: Technology and Systems. vol. 10512, SPIE.. (doi:10.1117/12.2294917).

Record type: Conference or Workshop Item (Paper)

Abstract

We have shown that the relative phase between the fundamental fiber mode and the transverse perturbation affects significantly the local transverse modal instability (TMI) gain. The gain variation is more pronounced as the core diameter increases. This finding can be used in conjunction with other proposed approaches to develop efficient strategies for mitigating TMI in high power fiber amplifiers and lasers. It also provides some physical insight on the physical origin of the observed large differences in the TMI threshold dependence on core diameter for narrow and broad linewidth operation.

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Effects of perturbation relative phase on transverse mode instability - Accepted Manuscript
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More information

Accepted/In Press date: 20 November 2017
e-pub ahead of print date: 26 February 2018
Additional Information: acceptance date and AM added.
Venue - Dates: Fiber Lasers XV: Technology and Systems 2018, , San Francisco, United States, 2018-01-29 - 2018-02-01
Keywords: high power fiber amplifiers, high power fiber lasers, phase perturbations, transverse mode instability

Identifiers

Local EPrints ID: 420785
URI: http://eprints.soton.ac.uk/id/eprint/420785
PURE UUID: 992adced-61e9-4f8b-8655-ec3252376817
ORCID for Michalis N. Zervas: ORCID iD orcid.org/0000-0002-0651-4059

Catalogue record

Date deposited: 16 May 2018 16:30
Last modified: 09 Jan 2022 02:41

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