title: Tunable, Q-switched Tm,Ho:LLF laser with a conductively cooled triangular prism rod.
abstract: We have developed a conductively cooled, Q-switched 2 μm laser with a triangular-prism Tm,Ho:LLF rod. Using a fused-silica acousto-optic Q-switch, the laser produced an output energy of 30 mJ in a single Q-switched pulse at a pulse repetition frequency of 5 Hz. Although the laser rod had polished lateral surfaces, no parasitic oscillation occurred, even at the maximum pumping level. In addition, broadly tunable laser performance was achieved with a birefringent filter plate under relatively large output coupling. The laser could be continuously tuned from 2051 to 2069 nm. Measured tuning characteristics were in reasonable agreement with calculated results.
authors.affiliation: Tohoku Institute of Technology, 35-1 Yagiyama-Kasumi-cho, Taihaku-ku, Sendai, 982-8577, Japan. atsushi@tohtech.ac.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Sato
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Miyake
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Asai
authors.forename: Shoken
authors.initials: S
authors.lastname: Ishii
authors.forename: Kohei
authors.initials: K
authors.lastname: Mizutani