Highly efficient first order Raman fibre lasers using very short Ge-doped silica fibres

Yucheng Zhao*, Stuart D. Jackson

*Corresponding author for this work

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We demonstrate first order Raman fibre lasers that use short lengths of low loss moderately (18 mol%) Ge-doped fibre. The Raman fibre lasers were pumped with a 14 W Yb3+-doped double clad fibre laser operating at a wavelength of 1106 nm. In a simple resonator configuration, the cavity of the Raman fibre lasers did not employ Bragg gratings and used a broadband dielectric mirror and ∼4% Fresnel reflection for feedback. The shortest fibre length of 10 m produced a first order Raman output of 5 W at slope efficiency of 82% and with the use of a 25 m length of fibre; a maximum first Stokes output power of 8 W was demonstrated at a slope efficiency of 76%. The use of short highly nonlinear Ge-doped fibres for Raman fibre lasers will be useful for a wide range of applications.

Original languageEnglish
Pages (from-to)172-176
Number of pages5
JournalOptics Communications
Volume253
Issue number1-3
DOIs
Publication statusPublished - 1 Sep 2005
Externally publishedYes

Keywords

  • Raman fibre lasers

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