1. Diode-pumped 2-μm pulse laser with noncomposite Tm,Ho:YLF rod conduction-cooled down to -80°C
- Author
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Kazufusa Noda, Makoto Aoki, Takayoshi Ishikawa, Kohei Mizutani, Shoken Ishii, Kazuhiro Asai, Atsushi Sato, Toshikazu Itabe, and Hirotake Fukuoka
- Subjects
Materials science ,Laser diode ,business.industry ,Materials Science (miscellaneous) ,Thermal contact ,Heat sink ,Thermal conduction ,Laser ,Industrial and Manufacturing Engineering ,Pulsed laser deposition ,law.invention ,Resonator ,Optics ,law ,Optoelectronics ,Business and International Management ,business ,Diode - Abstract
Q-switched operation of a diode-side-pumped, conduction-cooled Tm,Ho:YLF laser oscillator with 100-mJ output at a pulse repetition rate of 20 Hz and an eye-safe wavelength of 2-μm was achieved. The noncomposite Tm,Ho:YLF laser rod was conduction-cooled down to -80°C through thermal contact of In films from Cu heat sinks, and the laser diode arrays were conduction-cooled to approximately 20°C using Cu heat sinks in a vacuum container. A ring resonator of 3.86 m length with an acousto-optic Q-switch was used. The pulse width was 125 ns, and optical-to-optical efficiency was approximately 7% for an output of 100 mJ. The laser is used at 2.05 μm for applications of Doppler wind lidar measurements, COsub2/subdifferential absorption lidar measurements, and aerosol profiling. more...
- Published
- 2015