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High power two-micron fibre lasers

High power two-micron fibre lasers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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  • William A. Clarkson
  • A. Abdolvand
  • D. Y. Shen
  • R. A. Hayward
  • L. J. Cooper
  • R. B. Williams
  • J. Nilsson

Research units


Original languageEnglish
Title of host publicationXIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
EditorsKrzysztof M. Abramski, Edward F. Plinski, Wieslaw Wolinski
Place of publicationBellingham
PublisherSPIE-International Society for Optical Engineering
Publication date2003
Number of pages8
ISBN (Print)0819449806

Publication series

NameProceedings of SPIE


ConferenceXIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers


A double-clad thulium-doped silica fibre laser, pumped by two beam-shaped diode-bars operating at 787-790nm, has yielded 14W of single-mode output at similar to2mum, with a slope efficiency with respect to launched power of 46%. Using a tunable laser configuration, comprising an external cavity with a diffraction grating, a maximum output power of 10.5W at 1921nm has been obtained, and wavelength tuning at multi-watt power levels over 215nm from 1855 to 2070nm has been demonstrated. The prospects for further improvement in performance will be discussed. In addition, a simple approach for further scaling of power levels from fibre lasers in the two-micron regime, based on intracavity wavelength combining of multiple fibre lasers is described. In a preliminary demonstration, four cladding-pumped thulium-doped silica fibre lasers are wavelength-combined yielding an output power >14W. The prospects for further increase in output power via this approach will be discussed.

Research outputs


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