title: Variable-wavelength second harmonic generation of CW Yb-fibre laser in partially coupled enhancement cavity.
abstract: This work for the first time proposes and studies a method of frequency doubling of CW non-single-frequency fibre lasers with a high-Q resonator partially coupled to the fibre laser cavity. The proposed new approach resulted in the following parameters: laser's maximal output power 880 mW at 536 nm when pumped with 6.2 W at 976 nm, wavelength tuneability range 521-545 nm with the output power at the extreme ends of this range 420 and 220 mW correspondingly. The proposed configuration allows efficient non-linear transformation of both CW and pulsed radiation in a partially coupled enhancement cavity.
authors.forename: Sergey
authors.initials: S
authors.lastname: Khripunov
authors.forename: Daba
authors.initials: D
authors.lastname: Radnatarov
authors.forename: Sergey
authors.initials: S
authors.lastname: Kobtsev
authors.forename: Aleksey
authors.initials: A
authors.lastname: Skorkin