title: 2.4 mJ, 33 W Q-switched Tm-doped fiber laser with near diffraction-limited beam quality.
abstract: We report on a high pulse energy and high average power Q-switched Tm-doped fiber oscillator. The oscillator produces 2.4 mJ pulses with 33 W average power (at a repetition rate of 13.9 kHz) and nearly diffraction-limited beam quality. This record performance is enabled by a Tm-doped large-pitch fiber, which allows for large core diameters in combination with effective single-mode operation.
authors: Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Jena, Germany. fabian.stutzki@uni‑jena.de
authors: Fabian
authors: F
authors: Stutzki
authors: Florian
authors: F
authors: Jansen
authors: Cesar
authors: C
authors: Jauregui
authors: Jens
authors: J
authors: Limpert
authors: Andreas
authors: A
authors: Tünnermann