Abstract
The 4-kW all-fiber distributed side-pumped oscillator are firstly demonstrated with the distributed side-coupled cladding-pumped (DSCCP) fiber, to the best of our knowledge. Using four cascaded gain sections, the 3.96-kW output power with 73.0% slope efficiency is obtained, and the stimulated Raman scattering (SRS) suppression is about 48 dB. The transverse mode instability (TMI) is observed, and output properties are studied in experiments.
© 2018 The Author(s)
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