title: Crystalline Pr:SrAl12O19 waveguide laser in the visible spectral region.
abstract: We fabricated waveguides in Pr:SrAl(12)O(19) crystals by direct femtosecond laser writing. The propagation losses were calculated to be as low as 0.16 dB/cm at a wavelength of 633 nm. Laser oscillation in a diode-pumped waveguide at a wavelength of 643.5 nm was realized. The output power of the waveguide laser was 28.1 mW at a slope efficiency of 8%.
authors.affiliation: Institut für Laser-Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. tcalmano@physnet.uni‐hamburg.de
authors.forename: Thomas
authors.initials: T
authors.lastname: Calmano
authors.forename: Joerg
authors.initials: J
authors.lastname: Siebenmorgen
authors.forename: Fabian
authors.initials: F
authors.lastname: Reichert
authors.forename: Matthias
authors.initials: M
authors.lastname: Fechner
authors.forename: Anna-Greta
authors.initials: AG
authors.lastname: Paschke
authors.forename: Nils-Owe
authors.initials: NO
authors.lastname: Hansen
authors.forename: Klaus
authors.initials: K
authors.lastname: Petermann
authors.forename: Günter
authors.initials: G
authors.lastname: Huber