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pro vyhledávání: '"Ulrich Hefter"'
Autor:
Ulrich Hefter
Publikováno v:
Stuttgarter Lasertage '05: Standortbestimmung der Lasertechnologie in der industriellen Materialbearbeitung
Publikováno v:
SPIE Proceedings.
We have demonstrated a linearly polarized cw all-in-fiber oscillator providing 1 kW of output power and a polarization extinction ratio (PER) of up to 21.7 dB. The design of the laser oscillator is simple and consists of an Ytterbium-doped polarizati
Autor:
Stefano Taccheo, François Salin, Laurant Lablonde, Tim Durrant, Daniel Milanese, Hrvoje Gebavi, Udo Klotzback, Lasse Leick, Benoit Cadier, Riccardo Piccoli, David Mechin, Thierry Robin, Ulrich Hefter, Thomas Brand, Achille Monteville, Andy Malinovski
Publikováno v:
Scopus-Elsevier
This paper reports on the work done on photodarkening by our consortium. Particular emphasis is given to mitigate and measure photondarkening in high-quality Al-silicate fibers with high doping concentration.
Autor:
Frank Becker, Paul Wolf, Lutz Winkelmann, Bernd Köhler, Steffen Belke, Benjamin Neumann, Ulrich Hefter, Jens Biesenbach, Stefan Ruppik
Publikováno v:
Fiber Lasers X: Technology, Systems, and Applications.
High power Yb doped fiber laser sources are beside CO2- and disk lasers one of the working horses of industrial laser applications. Due to their inherently given robustness, scalability and high efficiency, fiber laser sources are best suited to fulf
Publikováno v:
SPIE Proceedings.
The Performance of High Power Disk Lasers and Fiber Lasers along with their rapid development to the high power cw regime have been of great interest throughout the last decade. Both technologies are still in the focus of several conferences, worksho