The University of Southampton
University of Southampton Institutional Repository

Transverse-modal-instability gain in high power fiber amplifiers: Effect of the perturbation relative phase

Transverse-modal-instability gain in high power fiber amplifiers: Effect of the perturbation relative phase
Transverse-modal-instability gain in high power fiber amplifiers: Effect of the perturbation relative phase

Local transverse modal instability (TMI) gain has been derived by carrying out a stability analysis of the fundamental mode amplification in high power fiber amplifiers, in the presence of spatial (transverse) and temporal perturbations, taking into account the gain saturation and resulting thermal loading. We have shown that the relative phase between the fundamental fiber mode and the transverse perturbation significantly affects the local TMI gain. By controlling the relative phase, the TMI gain can be reduced significantly, with the gain variation being 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.

2378-0967
Zervas, Michalis N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Zervas, Michalis N.
1840a474-dd50-4a55-ab74-6f086aa3f701

Zervas, Michalis N. (2019) Transverse-modal-instability gain in high power fiber amplifiers: Effect of the perturbation relative phase. APL Photonics, 4 (2), [022802]. (doi:10.1063/1.5050523).

Record type: Article

Abstract

Local transverse modal instability (TMI) gain has been derived by carrying out a stability analysis of the fundamental mode amplification in high power fiber amplifiers, in the presence of spatial (transverse) and temporal perturbations, taking into account the gain saturation and resulting thermal loading. We have shown that the relative phase between the fundamental fiber mode and the transverse perturbation significantly affects the local TMI gain. By controlling the relative phase, the TMI gain can be reduced significantly, with the gain variation being 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.

Text
1.5050523 - Version of Record
Available under License Creative Commons Attribution.
Download (2MB)

More information

Accepted/In Press date: 25 September 2018
e-pub ahead of print date: 11 December 2018
Published date: 2019

Identifiers

Local EPrints ID: 427137
URI: http://eprints.soton.ac.uk/id/eprint/427137
ISSN: 2378-0967
PURE UUID: 50f49757-2ab0-4ef9-ac8e-6888989cdf49
ORCID for Michalis N. Zervas: ORCID iD orcid.org/0000-0002-0651-4059

Catalogue record

Date deposited: 03 Jan 2019 17:30
Last modified: 28 Apr 2022 01:35

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×