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790nm diode pumped thulium sensitized holmium-doped fibre laser operating beyond 2100nm

790nm diode pumped thulium sensitized holmium-doped fibre laser operating beyond 2100nm
790nm diode pumped thulium sensitized holmium-doped fibre laser operating beyond 2100nm
High power Ho-doped fibre laser (HDFL) operating >2.1μm spectral region that exhibits excellent atmospheric transmission, can find significant advantages for applications in remote sensing, defence and as pump source for mid-IR generation. HDFLs can be cladding pumped at ~1.95μm by high brightness thulium-doped fibre lasers (TDFLs) for power scaling beyond 2.1μm [1]. In a double clad HDF, a fluorosilicate glass cladding is needed rather than the low-index polymer commonly used in double clad fibres. This is to avoid absorption of the pump wavelength at 1.95μm by the polymer coating materials that brings additional challenges in fibre fabrication. In addition, the use of TDFL as a pump source for HDFLs will limit the overall optical to optical conversion efficiency. An alternative approach is to use Tm3+ as a sensitizer for HDFs which can be directly diode pumped at 790nm. So far, the cladding pumped Tm:Ho co-doped silica fibre laser system had been demonstrated with slope efficiencies up to 42% [2].
IEEE
Ramírez-Martínez, N.J.
3c0182fc-1942-4cf5-973f-72e0cafa7fcd
Núñez-Velázquez, M.
3c102956-ac51-4d02-9fe6-6628557cfbff
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Ramírez-Martínez, N.J.
3c0182fc-1942-4cf5-973f-72e0cafa7fcd
Núñez-Velázquez, M.
3c102956-ac51-4d02-9fe6-6628557cfbff
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2

Ramírez-Martínez, N.J., Núñez-Velázquez, M. and Sahu, J.K. (2019) 790nm diode pumped thulium sensitized holmium-doped fibre laser operating beyond 2100nm. In 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE.. (doi:10.1109/CLEOE-EQEC.2019.8872599).

Record type: Conference or Workshop Item (Paper)

Abstract

High power Ho-doped fibre laser (HDFL) operating >2.1μm spectral region that exhibits excellent atmospheric transmission, can find significant advantages for applications in remote sensing, defence and as pump source for mid-IR generation. HDFLs can be cladding pumped at ~1.95μm by high brightness thulium-doped fibre lasers (TDFLs) for power scaling beyond 2.1μm [1]. In a double clad HDF, a fluorosilicate glass cladding is needed rather than the low-index polymer commonly used in double clad fibres. This is to avoid absorption of the pump wavelength at 1.95μm by the polymer coating materials that brings additional challenges in fibre fabrication. In addition, the use of TDFL as a pump source for HDFLs will limit the overall optical to optical conversion efficiency. An alternative approach is to use Tm3+ as a sensitizer for HDFs which can be directly diode pumped at 790nm. So far, the cladding pumped Tm:Ho co-doped silica fibre laser system had been demonstrated with slope efficiencies up to 42% [2].

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More information

e-pub ahead of print date: 17 October 2019
Published date: 2019
Venue - Dates: 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, ICM – International Congress Centre, Munich, Germany, 2019-06-22 - 2019-06-26

Identifiers

Local EPrints ID: 441260
URI: http://eprints.soton.ac.uk/id/eprint/441260
PURE UUID: 3dbdd5de-b8b6-495e-aea1-59bcc19c7c12
ORCID for N.J. Ramírez-Martínez: ORCID iD orcid.org/0000-0001-8711-792X
ORCID for M. Núñez-Velázquez: ORCID iD orcid.org/0000-0003-0774-3272
ORCID for J.K. Sahu: ORCID iD orcid.org/0000-0003-3560-6152

Catalogue record

Date deposited: 08 Jun 2020 16:30
Last modified: 28 Apr 2022 02:20

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Contributors

Author: N.J. Ramírez-Martínez ORCID iD
Author: J.K. Sahu ORCID iD

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