title: Efficient visible laser operation of Pr,Mg:SrAl12O19 channel waveguides.
abstract: We report the fabrication and visible laser operation of Pr,Mg:SrAl12O19 waveguides. Waveguiding structures were created by focusing the radiation of a femtosecond Ti:sapphire laser into bulk material. Guiding losses were determined to be as low as 0.12 dB cm(-1) at 632.8 nm. By employing a frequency-doubled optically pumped semiconductor laser, waveguide laser operation was realized at wavelengths of 525.3, 644.0, and 724.9 nm with output powers as high as 36, 1065, and 504 mW, respectively. To the best of our knowledge this is the first demonstration of green laser operation in a Pr(3+)-doped crystalline waveguide laser.
authors.affiliation: Institute of Laser-Physics, University of Hamburg, Hamburg, Germany. Fabian.Reichert@physnet.uni‑hamburg.de
authors.forename: F
authors.initials: F
authors.lastname: Reichert
authors.forename: T
authors.initials: T
authors.lastname: Calmano
authors.forename: S
authors.initials: S
authors.lastname: Müller
authors.forename: D-T
authors.initials: DT
authors.lastname: Marzahl
authors.forename: P W
authors.initials: PW
authors.lastname: Metz
authors.forename: G
authors.initials: G
authors.lastname: Huber