94 citations · 221 across the 6 of their papers we have counts for
7 papers
500 W rod-type 4x4 multi-core ultrafast fiber laser
A. Klenke, A. Steinkopff, C. Aleshire +10
We present a coherently-combined femtosecond fiber CPA system based on a rod-type, Ytterbium-doped, multicore fiber with 4x4 cores. A high average power of up to 500 W (after combi…
Experimental Investigations on the TMI Thresholds of Low-NA Yb-doped single mode fibers
Franz Beier, Friedrich Moeller, Bettina Sattler +9
In this contribution we investigate the transversal mode instability behavior of an ytterbium doped commercial 20/400 fiber and obtain 2.9 kW of output power after optimizing the i…
Monolithic Thulium Fiber Laser with 567 W output power at 1970 nm
Till Walbaum, Matthias Heinzig, Thomas Schreiber +2
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. This is achieved by…
Measuring Thermal Load in Fiber Amplifiers in the Presence of Transversal Mode Instabilities
Franz Beier, Marco Plötner, Bettina Sattler +7
We report on detailed in-situ distributed temperature measurements inside a high power fiber amplifier. The deducted thermal load and the TMI-threshold of a commercial LMA fiber wi…
Laser-induced anti-Stokes fluorescence cooling of ytterbium-doped silica glass by more than 6 Kelvin
Mostafa Peysokhan, Saeid Rostami, Esmaeil Mobini +12
Laser cooling of a solid is achieved when a coherent laser illuminates the material, and the heat is extracted by resulting anti-Stokes fluorescence. Over the past year, net solid-…
Fiber lasers: a power-scalable coherent light source for applications in space
Oliver de Vries, Marco Plötner, Thomas Schreiber +2
Fiber lasers entered numerous applications due to their high efficiency and superior stability. Particularly in space, those lasers have to fulfill additional requirements set by t…