title: Core area scaling of Nd:Al-doped silica depressed clad hollow optical fiber and Q-switched laser operation at 0.9 microm.
abstract: We demonstrate a Q-switched, cladding-pumped, Nd:Al-doped silica depressed clad hollow optical fiber (DCHOF) laser, which generated up to 133 microJ of pulse energy at a repetition rate of 5 kHz and 0.9 W of average output power at a high repetition rate (>20 kHz) in a diffraction-limited beam (M(2)=1.08) at 927 nm. The laser was tunable from 919 to 935 nm. This result shows the potential of the DCHOF structure for the suppression of unwanted long-wavelength radiation in large-area cores suitable for high-power Q-switched laser operation.
authors.affiliation: Optoelectronics Research Centre, University of Southampton, UK. jks@orc.soton.ac.uk
authors.forename: J
authors.initials: J
authors.lastname: Kim
authors.forename: P
authors.initials: P
authors.lastname: Dupriez
authors.forename: D B S
authors.initials: DB
authors.lastname: Soh
authors.forename: J
authors.initials: J
authors.lastname: Nilsson
authors.forename: J K
authors.initials: JK
authors.lastname: Sahu