|Publication No: 1714||Search all ORC publications|
High-numerical-aperture, contact-bonded, planar waveguides for diode-bar-pumped lasers
D.P.Shepherd, C.L.Bonner, C.T.A.Brown, W.A.Clarkson, A.C.Tropper and D.C.Hanna
Optoelectronics Research Centre, University of Southampton
Maxios Laser Corporation, 6551 Sierra Lane, Dublin, California 94568, U.S.A.
We report on the design and fabrication of Nd:YAG planar waveguides suitable for in-plane, diode-bar pumping. Contact-bonded Nd:YAG on Sapphire waveguides are shown to have the high numerical aperture (0.46), low propagation loss (<0.2dB/cm), and good thermal properties necessary to make efficient diode-bar-pumped lasers and amplifiers. Coupling efficiencies of 73% and 60% have been demonstrated between a 20W diode-bar and an 8μm and a 4μm thick planar waveguide respectively, leading to 3.7W of waveguide-laser output.
Optics Communications (1999) Vol.160(1-3) pp.47-50
Copyright University of Southampton 2006