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47 W continuous-wave 1726 nm thulium fiber laser core-pumped by an erbium fiber laser

47 W continuous-wave 1726 nm thulium fiber laser core-pumped by an erbium fiber laser
47 W continuous-wave 1726 nm thulium fiber laser core-pumped by an erbium fiber laser

High power, short-wavelength operation of a thulium-doped silica fiber laser at 1726 nm has been demonstrated in a core-pumped monolithic (all-fiber) resonator configuration, in-band pumped by a high power erbium-only fiber laser operating at 1580 nm. The thulium fiber laser yielded 46.7 W in a single-spatial-mode output beam for 65 W absorbed pump power. The corresponding slope efficiency with respect to absorbed pump power of 79.8% compares favorably with the theoretical maximum (Stokes) efficiency of 91.5%. The prospects for further scaling of single-mode power in this wavelength regime to >100 W are considered, as well as the potential applications for high power lasers operating in this difficult-to-reach wavelength band.

Thulium, erbium, fibre, Fibre laser, continuous, core-pumping, fiber, fiber Bragg gratings, LASER
0146-9592
5230-5233
Burns, Mark
7f7ca346-f31a-46cf-a848-acb4bcae18b9
Shardlow, Peter
9ca17301-8ae7-4307-8bb9-371df461520c
Jefferson-Brain, Thomas, Lewis
8bce2a02-37a4-4277-a8cb-0c40bde57837
Barua, Pranabesh
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, William
3b060f63-a303-4fa5-ad50-95f166df1ba2
Burns, Mark
7f7ca346-f31a-46cf-a848-acb4bcae18b9
Shardlow, Peter
9ca17301-8ae7-4307-8bb9-371df461520c
Jefferson-Brain, Thomas, Lewis
8bce2a02-37a4-4277-a8cb-0c40bde57837
Barua, Pranabesh
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, William
3b060f63-a303-4fa5-ad50-95f166df1ba2

Burns, Mark, Shardlow, Peter, Jefferson-Brain, Thomas, Lewis, Barua, Pranabesh, Sahu, Jayanta and Clarkson, William (2019) 47 W continuous-wave 1726 nm thulium fiber laser core-pumped by an erbium fiber laser. Optics Letters, 44 (21), 5230-5233. (doi:10.1364/OL.44.005230).

Record type: Letter

Abstract

High power, short-wavelength operation of a thulium-doped silica fiber laser at 1726 nm has been demonstrated in a core-pumped monolithic (all-fiber) resonator configuration, in-band pumped by a high power erbium-only fiber laser operating at 1580 nm. The thulium fiber laser yielded 46.7 W in a single-spatial-mode output beam for 65 W absorbed pump power. The corresponding slope efficiency with respect to absorbed pump power of 79.8% compares favorably with the theoretical maximum (Stokes) efficiency of 91.5%. The prospects for further scaling of single-mode power in this wavelength regime to >100 W are considered, as well as the potential applications for high power lasers operating in this difficult-to-reach wavelength band.

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More information

In preparation date: 28 May 2019
Accepted/In Press date: 10 September 2019
Published date: 1 November 2019
Keywords: Thulium, erbium, fibre, Fibre laser, continuous, core-pumping, fiber, fiber Bragg gratings, LASER

Identifiers

Local EPrints ID: 431386
URI: https://eprints.soton.ac.uk/id/eprint/431386
ISSN: 0146-9592
PURE UUID: 128ea5d3-139f-4c50-8350-021183b86779
ORCID for Mark Burns: ORCID iD orcid.org/0000-0003-2039-6025
ORCID for Peter Shardlow: ORCID iD orcid.org/0000-0003-0459-0581
ORCID for Thomas, Lewis Jefferson-Brain: ORCID iD orcid.org/0000-0002-8838-5640

Catalogue record

Date deposited: 31 May 2019 16:30
Last modified: 13 Nov 2019 01:32

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