title: Ion-exchanged Tm3+:glass channel waveguide laser.
abstract: Continuous wave laser action around 1.9 μm has been demonstrated in a Tm(3+)-doped germanate glass channel waveguide laser fabricated by ion-exchange. Laser action was observed with an absorbed power threshold of only 44 mW and a slope efficiency of up to 6.8% was achieved. Propagation loss at the lasing wavelength was measured to be 0.3 dB/cm. We believe this to be the first ion-exchanged Tm(3+)-doped glass waveguide laser.
authors.affiliation: Optoelectronics Research Centre, University of Southampton, Highfield, Southampton, UK. ac12g10@orc.soton.ac.uk
authors.forename: Amol
authors.initials: A
authors.lastname: Choudhary
authors.forename: Pradeesh
authors.initials: P
authors.lastname: Kannan
authors.forename: Jacob I
authors.initials: JI
authors.lastname: Mackenzie
authors.forename: Xian
authors.initials: X
authors.lastname: Feng
authors.forename: David P
authors.initials: DP
authors.lastname: Shepherd