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 language | English |
---|---|
Pages (from-to) | 172-176 |
Number of pages | 5 |
Journal | Optics Communications |
Volume | 253 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 1 Sept 2005 |
Externally published | Yes |
Keywords
- Raman fibre lasers