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High-power diode-pumped ytterbium-doped fibre-laser

High-power diode-pumped ytterbium-doped fibre-laser
High-power diode-pumped ytterbium-doped fibre-laser
This thesis details the work I have done on double cladding ytterbium-doped fibre lasers. The two main subjects developed were the study of an efficient compact-launching system, and the operation of the double cladding compact fibre as a continuous-wave laser and a Q-switched laser. During this work, highly efficient side launching systems were developed. These allowed coupling of more than 70% of the pump light into the doped fibre and gave as good lasing efficiency as end-pumping system. The pump and the signal were also well separated in two different guides at the ends of the device. Efficient lasing at 976 nm (85% slope efficiency) was demonstrated too, by using small inner cladding area and double passed pump. Finally, pulse-energy as high as 7.7 mJ was achieved with a large core cladding pumped ytterbium doped Q-switched fibre laser.
University of Southampton
Renaud, Cyril C.
ccb88119-de19-4d26-a505-31d5eb166ce0
Renaud, Cyril C.
ccb88119-de19-4d26-a505-31d5eb166ce0
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Renaud, Cyril C. (2001) High-power diode-pumped ytterbium-doped fibre-laser. University of Southampton, Optoelectronic Research Centre, Doctoral Thesis, 134pp.

Record type: Thesis (Doctoral)

Abstract

This thesis details the work I have done on double cladding ytterbium-doped fibre lasers. The two main subjects developed were the study of an efficient compact-launching system, and the operation of the double cladding compact fibre as a continuous-wave laser and a Q-switched laser. During this work, highly efficient side launching systems were developed. These allowed coupling of more than 70% of the pump light into the doped fibre and gave as good lasing efficiency as end-pumping system. The pump and the signal were also well separated in two different guides at the ends of the device. Efficient lasing at 976 nm (85% slope efficiency) was demonstrated too, by using small inner cladding area and double passed pump. Finally, pulse-energy as high as 7.7 mJ was achieved with a large core cladding pumped ytterbium doped Q-switched fibre laser.

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More information

Published date: 2001
Organisations: University of Southampton

Identifiers

Local EPrints ID: 38210
URI: http://eprints.soton.ac.uk/id/eprint/38210
PURE UUID: 1c8c5b81-e962-4118-b92c-f97c8c82ebb7
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 21 Jun 2006
Last modified: 26 Jul 2022 01:36

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Contributors

Author: Cyril C. Renaud
Thesis advisor: Johan Nilsson ORCID iD

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