title: Passively Q-switched Nd:YAG ring lasers with high average output power in single-frequency operation.
abstract: Applying Cr(4+):YAG saturable absorbers, we demonstrate efficient passively Q -switched operation of diode-pumped Nd:YAG lasers with a maximum average output power of more than 800 mW. Pulse durations below 3 ns, energies of 70 microJ, and peak powers of 30 kW are observed with kilohertz repetition rates. Single-frequency operation is accomplished for all output powers by a nonplanar ring geometry.
authors.affiliation: Laser Zentrum Hannover e.V., Hollerithallee 8, D-30419 Hannover, Germany.
authors.forename: I
authors.initials: I
authors.lastname: Freitag
authors.forename: A
authors.initials: A
authors.lastname: Tünnermann
authors.forename: H
authors.initials: H
authors.lastname: Welling