title: Watts-level frequency doubling of a narrow line linearly polarized Raman fiber laser to 589nm.
abstract: A single-mode, linearly polarized, 1118 nm ytterbium fiber laser was applied to pumping of a short fiber length, polarization-maintaining Raman cavity, resulting in a 0.4 nm linewidth, 23 W CW source at 1179 nm. Efficient, single-pass frequency doubling of the Raman source in MgO doped PPLN to 589 nm was demonstrated with CW power levels in excess of 3 W. No beam quality degradation was observed due to photorefraction at pump power densities up to 2 MW/cm(2). The proposed approach can be readily extended to Watt-level generation of any desired wavelength in the 560 to 770 nm range.
authors.forename: D
authors.initials: D
authors.lastname: Georgiev
authors.forename: V P
authors.initials: VP
authors.lastname: Gapontsev
authors.forename: A G
authors.initials: AG
authors.lastname: Dronov
authors.forename: M Y
authors.initials: MY
authors.lastname: Vyatkin
authors.forename: A B
authors.initials: AB
authors.lastname: Rulkov
authors.forename: S V
authors.initials: SV
authors.lastname: Popov
authors.forename: J R
authors.initials: JR
authors.lastname: Taylor