0520361 - FZÚ 2020 RIV US eng C - Conference Paper (international conference)
Kratochvíl, J. - Boháček, Pavel - Šulc, J. - Němec, M. - Fibrich, M. - Jelínková, J. - Trunda, Bohumil - Havlák, Lubomír - Jurek, Karel - Nikl, Martin
Tm, Ho:GGAG crystal for 2.1 μm tunable diode-pumped laser.
High-Power, High-Energy, and High-Intensity Laser Technology IV. Bellingham: SPIE, 2019 - (Hein, J.; Butcher, T.), s. 54-64, č. článku 110330H. Proceedings of SPIE, 11033. ISBN 978-1-5106-2733-8. ISSN 0277-786X.
[Conference on High-Power, High-Energy, and High-Intensity Laser Technology IV. Prague (CZ), 03.04.2019-04.04.2019]
Institutional support: RVO:68378271
Keywords : Tm * Ho:GGAG laser crystal * mixed garnets * near-infrared laser * tunable laser
OECD category: Optics (including laser optics and quantum optics)

The spectroscopy properties and wavelength tunability of diode pumped laser based on Tm, Ho:GGAG single crystal were investigated. A fiber coupled laser diode was used for longitudinal pumping of Tm, Ho:GGAG. The laser diode was operating in the pulsed regime (5 ms pulse length, 10 Hz repetition rate, 785 nm emission wavelength, maximum power amplitude 16.8 W). The 150 mm long hemi-spherical laser resonator consisted of a flat pumping mirror (HR @ 1.852.11 μm, HT @ 0.78 μm) and concave (r = 150 mm) output coupler with a reflectivity of ≈97% @1.8 2.10 m. Wavelength tuning was accomplished by using 1.5 mm thick SiO2 birefringent plate. For the sample with 3.97 at.% Tm, 0.38 at.% Ho concentration, the measured maximal output power amplitude was 1.04 W at 2086 nm with a slope efficiency of 23.6%. For the sample with 7.65 at.% Tm, 0.68 at .% Ho concentrations, the measured maximal output power amplitude was 2.30 W at 2090 nm with a slope efficiency of 26.5%.

Permanent Link: http://hdl.handle.net/11104/0305043