Tm:GGAG crystal for 2 μm tunable diode-pumped laser

0469432 - FZÚ 2017 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Šulc, J. - Boháček, Pavel - Němec, M. - Fibrich, M. - Jelínková, H. - Trunda, Bohumil - Havlák, Lubomír - Jurek, Karel - Nikl, Martin
Tm:GGAG crystal for 2 μm tunable diode-pumped laser.
Laser sources and applications III. Bellingham: SPIE, 2016 - (Mackenzie, J.; Jelinkova, H.; Taira, T.; Ahmed, M.), s. 1-8, č. článku 98930H. Proceedings of SPIE, 9893. ISBN 978-1-5106-0138-3. ISSN 0277-786X.
[Conference on Laser Sources and Applications III. Brussels (BE), 04.04.2016-05.04.2016]
Institucionální podpora: RVO:68378271
Klíčová slova: Tm:GGAG laser crystal * mixed garnets * infrared solid-state laser * tunable laser * diode-pumped laser
Kód oboru RIV: BH - Optika, masery a lasery

The spectroscopy properties and wavelength tunability of diode pumped laser based on Tm:GGAG single crystal were investigated for the
first time. A fiber (core diameter 400 μm, NA= 0.22) coupled laser diode (emission wavelength 786 nm) was used for longitudinal Tm:GGAG pumping. The laser diode was operating in the pulsed regime (10 ms pulse length, 10 Hz repetition rate, maximum power amplitude 18 W). The 145 mm long semi-hemispherical laser resonator consisted of a flat pumping mirror (HR @ 1.8 - 2.10 μm, HT @ 0.78 μm) and curved (r = 150mm) output coupler with a reflectivity of 97% @ 1.8 - 2.10 μm. The maximum laser output power amplitude 1.14W was obtained at wavelength 2003nm for absorbed pump power amplitude 4.12W. The laser slope efficiency was 37% in respect to absorbed pumping power. The laser was continuously tunable over 180 nm in a spectral region from 1856 nm to 2036 nm.
Trvalý link: http://hdl.handle.net/11104/0267219