title: Pulsed laser deposited diode-pumped 7.4 W Yb:Lu₂O₃ planar waveguide laser.
abstract: Fabrication, characterization, and laser performance of an Yb:Lu₂O₃ planar waveguide laser are reported. Pulsed laser deposition was employed to grow an 8 µm-thick Yb-doped lutetia waveguide on a YAG substrate. X-ray diffraction was used to determine the crystallinity, and spectroscopic characterization showed the absorption and emission cross-sections were indistinguishable from those reported for bulk material. When end-pumped by a diode-laser bar an output power of 7.4 W was achieved, limited by the available pump power, at a wavelength of 1033 nm and a slope efficiency of 38% with respect to the absorbed pump power.
authors.forename: Tina L
authors.initials: TL
authors.lastname: Parsonage
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Beecher
authors.forename: Amol
authors.initials: A
authors.lastname: Choudhary
authors.forename: James A
authors.initials: JA
authors.lastname: Grant-Jacob
authors.forename: Ping
authors.initials: P
authors.lastname: Hua
authors.forename: Jacob I
authors.initials: JI
authors.lastname: Mackenzie
authors.forename: David P
authors.initials: DP
authors.lastname: Shepherd
authors.forename: Robert W
authors.initials: RW
authors.lastname: Eason