Efficient operation at 1040 nm of a diode-pumped Yb:YAl3(BO3)(4) laser is r
eported. A range of cavity configurations has been investigated, as well as
output wavelength range. The maximum output power was 654 mW and slope eff
iciency 71% when pumped with a 1.6 W fibre-coupled diode at 976 nm. Further
improvement can be expected with an optimised cavity design. Self-frequenc
y-doubled operation was also demonstrated. (C) 2000 Elsevier Science B.V. A
ll rights reserved.