title: Femtosecond-laser-written diode-pumped Pr:LiYF4 waveguide laser.
abstract: Waveguides were fabricated in a 5 mm long Pr(0.5 at%):LiYF4 (YLF) crystal with a femtosecond Ti:sapphire laser system. Waveguiding was achieved inside a core surrounded by eight single modified tracks building a rhombic structure. The waveguide was pumped at a wavelength of 444 nm with an InGaN laser diode. Orange and deep red laser oscillation were realized. Maximum output powers of 25 mW at 604 nm and 12 mW at 720 nm with respect to the incident pump power were achieved.
authors.affiliation: Universität Hamburg, Institut für Laser-Physik, Luruper Chaussee 149, Hamburg 22761, Germany. s.mueller@physnet.uni-hamburg.de
authors.forename: Sebastian
authors.initials: S
authors.lastname: Müller
authors.forename: Thomas
authors.initials: T
authors.lastname: Calmano
authors.forename: Philip
authors.initials: P
authors.lastname: Metz
authors.forename: Nils-Owe
authors.initials: NO
authors.lastname: Hansen
authors.forename: Christian
authors.initials: C
authors.lastname: Kränkel
authors.forename: Günter
authors.initials: G
authors.lastname: Huber