Narrow linewidth, 100 W cw Yb3+-doped silica fiber laser with a point-by-point Bragg grating inscribed directly into the active core.
We report on the power scaling to 103 W of a 1.1 microm continuous-wave Yb(3+)-doped silica fiber laser incorporating a point-by-point (PbP) fiber-Bragg grating inscribed directly into the active core using 800 nm femtosecond laser pulses. The spectrum of the laser exhibited a narrow linewidth that broadened to 260 pm at 103 W. The output was frequency doubled using an 11 mm long periodically poled MgO:LiNbO3 crystal to generate 2.1 W of green with an internal conversion efficiency of 10% at high power and 0.81%/W at low power.
Jovanovic
Nemanja
N
Centre for Ultrahigh-bandwidth Devices for Optical Systems, Centre for Lasers and Applications, Department of Physics, Macquarie University, Australia. njovanov@ics.mq.edu.au
Aslund
Mattias
M
Fuerbach
Alexander
A
Jackson
Stuart D
SD
Marshall
Graham D
GD
Withford
Michael J
MJ