access icon free Suppression of self-pulsing in Yb fibre lasers coupled with external Fabry-Pérot cavity

A simple technique to suppress self-pulsing behaviour in a fibre laser employing a two-mirror Fabry-Pérot external feedback cavity is reported. Feedback provided by the external Fabry-Pérot cavity enforces the fibre laser to oscillate in the selected longitudinal modes, resulting in robust laser operation without self-pulsing. This technique has been successfully applied to a double-clad Yb fibre laser, yielding a stable continuous-wave output of up to 9.8 W at 1050 nm. The advantages of this technique and the prospects of further improvement are discussed.

Inspec keywords: ytterbium; laser cavity resonators; laser feedback; optical fibre cladding; laser mirrors; fibre lasers; laser beams; laser modes; Fabry-Perot resonators

Other keywords: continuous-wave output stability; power 9.8 W; two-mirror Fabry-Perot external feedback cavity; double-clad Yb fibre laser; longitudinal modes; wavelength 1050 nm; self-pulsing suppression

Subjects: Fibre lasers and amplifiers; Laser accessories and instrumentation; Laser beam characteristics and interactions; Laser beam interactions and properties; Laser resonators and cavities; Fibre lasers and amplifiers; Optical lenses and mirrors; Laser resonators and cavities; Design of specific laser systems

References

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      • 8. Siegman, A.E.: ‘Lasers’ (University Science Books, Sausalito, CA, USA, 1986), Chap. 25.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2014.0530
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