Open AccessSuppression of self‐pulsing in Yb fibre lasers coupled with external Fabry‐Pérot cavity
Author(s) -
Lee J.S.,
Kim J.W.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2014.0530
Subject(s) - fabry–pérot interferometer , laser , materials science , optics , fiber laser , longitudinal mode , subwavelength diameter optical fibre , continuous wave , optoelectronics , distributed feedback laser , wavelength , physics
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.