Abstract

We demonstrate a $Q$-switched fiber laser system emitting sub-60 ns pulses with 26 mJ pulse energy and near-diffraction-limited beam quality ($M^2<1.3$). In combination with a repetition rate of 5 kHz, a corresponding average output power of 130 W is achieved. This record performance is enabled by a large-pitch fiber with a core diameter of 135 µm. This fiber allows for effective single-mode operation with mode field diameters larger than 90 µm even at average output powers exceeding 100 W.

©2012 Optical Society of America

2.4 mJ, 33 W Q-switched Tm-doped fiber laser with near diffraction-limited beam quality

Fabian Stutzki, Florian Jansen, Cesar Jauregui, Jens Limpert, and Andreas Tünnermann
Opt. Lett. 38(2) 97-99 (2013)

6 mJ, high-average-power, all-fiberized Q-switched fiber master oscillator power amplifier with low repetition rate

Hanwei Zhang, Xiaolin Wang, Pu Zhou, Zhiqun Gong, and Xiaojun Xu
Appl. Opt. 51(29) 6933-6936 (2012)

High-power very large mode-area thulium-doped fiber laser

Florian Jansen, Fabian Stutzki, Cesar Jauregui, Jens Limpert, and Andreas Tünnermann
Opt. Lett. 37(21) 4546-4548 (2012)

Q-switched thulium-doped photonic crystal fiber laser

Pankaj Kadwani, Norbert Modsching, R. Andrew Sims, Lasse Leick, Jes Broeng, Lawrence Shah, and Martin Richardson
Opt. Lett. 37(10) 1664-1666 (2012)

Compact passively Q-switched diode-pumped Tm:LiLuF₄ laser with 1.26 mJ output energy

Haohai Yu, Valentin Petrov, Uwe Griebner, Daniela Parisi, Stefano Veronesi, and Mauro Tonelli
Opt. Lett. 37(13) 2544-2546 (2012)