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Tm-based fiber-laser system with more than 200 MW peak power

: Stutzki, Fabian; Gaida, Christian; Gebhardt, Martin; Jansen, Florian; Jauregui, Cesar; Limpert, Jens; Tünnermann, Andreas


Optics Letters 40 (2015), No.1, pp.9-12
ISSN: 0146-9592
Journal Article
Fraunhofer IOF ()
fiber lasers; average power; laser sources; mode field diameter; performance level; pulse energies; pulse regimes; spectral region

Tm-based fiber-laser systems are an attractive concept for the development of high-performance laser sources in the spectral region around 2 µm wavelength. Here we present a system delivering a pulse-peak power higher than 200 MW in combination with 24 W average power and 120 ?J pulse energy. Key components enabling this performance level are a Tm-doped large-pitch fiber with a mode-field diameter of 65 µm, highly efficient dielectric gratings, and a Tm-based fiber oscillator operating in the stretched-pulse regime.