Passive Q switching of Yb:CNGS lasers by Cr.sup.4+./sup.:YAG and V.sup.3+./sup.:YAG saturable absorbers

0500109 - FZÚ 2019 RIV US eng J - Článek v odborném periodiku
Zhang, X. - Loiko, P. - Serres, J.M. - Jambunathan, Venkatesan - Wang, S. - Guo, S. - Yasukevich, A. - Lucianetti, Antonio - Mocek, Tomáš - Griebner, U. - Petrov, V. - Xu, X. - Aguilo, M. - Díaz, F. - Mateos, X.
Passive Q switching of Yb:CNGS lasers by Cr⁴⁺:YAG and V³⁺:YAG saturable absorbers.
Applied Optics. Roč. 57, č. 28 (2018), s. 8236-8241. ISSN 1559-128X. E-ISSN 2155-3165
Grant CEP: GA MŠMT LO1602; GA ČR GA16-12960S; GA MŠMT EF15_006/0000674; GA MŠMT LM2015086
GRANT EU: European Commission(XE) 739573 - HiLASE CoE
Grant ostatní: OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institucionální podpora: RVO:68378271
Klíčová slova: Cr:YAG * V:YAG * Yb:CNGS * passive aswitching * diode pumping * volume-Bragg-grating
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 1.973, rok: 2018

Trigonal langasite-type ordered silicate crystal Yb:Ca3NbGa3Si2O14 (Yb:CNGS) is a promising material for efficient ∼1 μm lasers. We report on the first passively Q-switched Yb:CNGS laser using Cr4 :YAG and V3 :YAG saturable absorbers (SAs) with a 976 nm volume-Bragg-grating-stabilized diode as a pump source. The laser crystal was a c cut 3 at.% Yb:CNGS grown by the Czochralski method. It was placed in a compact microchip-type laser cavity. With a Cr4 :YAG SA, very stable 62.2 μJ/4.4 ns pulses were achieved at a repetition rate of 22.5 kHz. The average output power was 1.40Wat 1015.3 nm, corresponding to a Q switching conversion efficiency of 90%.With the V3 :YAG SA, the pulse characteristics were 13.3 μJ/11.1 ns at a higher repetition rate of 68.4 kHz. The performance of the Yb:CNGS∕Cr4 :YAG was numerically modeled showing a good agreement with the experiment
Trvalý link: http://hdl.handle.net/11104/0292251