Monolithic Thulium Fiber Laser with 567 W output power at 1970 nm

no code implementations • 29 Jan 2021 • Till Walbaum, Matthias Heinzig, Thomas Schreiber, Ramona Eberhardt, Andreas Tünnermann

We report on a monolithic thulium fiber laser with 567 W output power at 1970 nm, which is the highest power reported so far directly from a thulium oscillator.

Optics

Measuring Thermal Load in Fiber Amplifiers in the Presence of Transversal Mode Instabilities

no code implementations • 29 Jan 2021 • Franz Beier, Marco Plötner, Bettina Sattler, Fabian Stutzki, Till Walbaum, Andreas Liem, Nicoletta Haarlammert, Thomas Schreiber, Ramona Eberhardt, Andreas Tünnermann

We report on detailed in-situ distributed temperature measurements inside a high power fiber amplifier.

Optics