title: Monocrystalline Yb(3+):(Gd,Lu)(2)O(3) channel waveguide laser at 976.8 nm.
abstract: We report on a Yb(3+)-doped sesquioxide waveguide laser based on a lattice-matched Yb(3+)(3%):(Gd,Lu)(2)O(3) film that has been epitaxially grown on Y(2)O(3) using pulsed laser deposition. Rib-channel waveguides have been structured by reactive ion etching. Laser emission at 976.8 nm was observed under pumping with a Ti(3+):Al(2)O(3) laser at 905 nm. A laser threshold of 17 mW and a slope efficiency of 6.7% have been achieved with respect to input power. For an incident pump power of 200 mW, a maximum output power of 12 mW could be realized.
authors.affiliation: Institut für Laser-Physik, Universität Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany. HKuehn@physnet.uni-hamburg.de
authors.forename: Henning
authors.initials: H
authors.lastname: Kühn
authors.forename: Sebastian
authors.initials: S
authors.lastname: Heinrich
authors.forename: Andreas
authors.initials: A
authors.lastname: Kahn
authors.forename: Klaus
authors.initials: K
authors.lastname: Petermann
authors.forename: Jonathan D B
authors.initials: JD
authors.lastname: Bradley
authors.forename: Kerstin
authors.initials: K
authors.lastname: Wörhoff
authors.forename: Markus
authors.initials: M
authors.lastname: Pollnau
authors.forename: Günter
authors.initials: G
authors.lastname: Huber