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Nested-ring doping for highly efficient 1907 nm short-wavelength cladding-pumped thulium fiber lasers

Nested-ring doping for highly efficient 1907 nm short-wavelength cladding-pumped thulium fiber lasers
Nested-ring doping for highly efficient 1907 nm short-wavelength cladding-pumped thulium fiber lasers
Cladding-pumped Tm-doped fiber lasers operating below 1950 nm have difficulty matching the high efficiency, power-scalable output that can be achieved at longer wavelengths. This challenge arises due to the strong three-level behavior at short wavelengths and strong competition from higher-gain long wavelength emission. In this paper, we demonstrate a nested-ring fiber design in which a highly-doped Tm ring is embedded within a larger undoped core. The fiber is specifically tailored for highly efficient and high power short wavelength operation (<1950 nm). The nested-ring Tm fiber laser has generated 62 W of single-mode 1907 nm output with up to 65%(70%) slope efficiency with respect to launched (absorbed) pump power.
0146-9592
5542-5545
Barber, Matthew James
5682d70c-71a4-4875-a714-55704b8ac20c
Shardlow, Peter
9ca17301-8ae7-4307-8bb9-371df461520c
Barua, Pranabesh
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, William
3b060f63-a303-4fa5-ad50-95f166df1ba2
Barber, Matthew James
5682d70c-71a4-4875-a714-55704b8ac20c
Shardlow, Peter
9ca17301-8ae7-4307-8bb9-371df461520c
Barua, Pranabesh
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, William
3b060f63-a303-4fa5-ad50-95f166df1ba2

Barber, Matthew James, Shardlow, Peter, Barua, Pranabesh, Sahu, Jayanta and Clarkson, William (2020) Nested-ring doping for highly efficient 1907 nm short-wavelength cladding-pumped thulium fiber lasers. Optics Letters, 45 (19), 5542-5545. (doi:10.1364/OL.401228).

Record type: Article

Abstract

Cladding-pumped Tm-doped fiber lasers operating below 1950 nm have difficulty matching the high efficiency, power-scalable output that can be achieved at longer wavelengths. This challenge arises due to the strong three-level behavior at short wavelengths and strong competition from higher-gain long wavelength emission. In this paper, we demonstrate a nested-ring fiber design in which a highly-doped Tm ring is embedded within a larger undoped core. The fiber is specifically tailored for highly efficient and high power short wavelength operation (<1950 nm). The nested-ring Tm fiber laser has generated 62 W of single-mode 1907 nm output with up to 65%(70%) slope efficiency with respect to launched (absorbed) pump power.

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Accepted/In Press date: 25 August 2020
Published date: 30 September 2020

Identifiers

Local EPrints ID: 443874
URI: http://eprints.soton.ac.uk/id/eprint/443874
ISSN: 0146-9592
PURE UUID: e150a3d0-c4b8-44e4-ade6-00cb720bb470
ORCID for Matthew James Barber: ORCID iD orcid.org/0000-0001-9768-6421
ORCID for Peter Shardlow: ORCID iD orcid.org/0000-0003-0459-0581
ORCID for Jayanta Sahu: ORCID iD orcid.org/0000-0003-3560-6152

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Date deposited: 15 Sep 2020 16:34
Last modified: 28 Apr 2022 06:33

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Contributors

Author: Peter Shardlow ORCID iD
Author: Pranabesh Barua
Author: Jayanta Sahu ORCID iD

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