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Proceedings Paper

Design evolution, long term performance and application tests of extra large mode area (XLMA) fiber lasers
Author(s): Andreas Langner; Mario Such; Gerhard Schötz; Florian Just; Martin Leich; Stephan Grimm; Jan Dellith; Matthias Jäger; Kay Schuster; Hagen Zimer; Marcin Kozak; Björn Wedel; Georg Rehmann; Charley Bachert; Volker Krause
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Paper Abstract

XLMA fibers based on Yb-doped bulk silica possess an excellent refractive index and doping level homogeneity [1]. To achieve the highest optical-to-optical efficiency and long-term operation without degradation we simulated the effect of the brightness conversion factor of different core dopant compositions of such XLMA fibers. We also investigated the beam quality of a multi-kW single XLMA fiber laser system and its long-term stability. The current state-of-the-art XLMA single fiber laser has 5 kW maximum output power and a degradation rate of about 0.5 % / 500 h at 4 kW measured over a period of 1700 h. Several application tests demonstrate the excellent performance of the XLMA fiber laser.

Paper Details

Date Published: 22 February 2013
PDF: 13 pages
Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86010G (22 February 2013); doi: 10.1117/12.2000472
Show Author Affiliations
Andreas Langner, Heraeus Quarzglas GmbH & Co. KG (Germany)
Mario Such, Heraeus Quarzglas GmbH & Co. KG (Germany)
Gerhard Schötz, Heraeus Quarzglas GmbH & Co. KG (Germany)
Florian Just, Institut für Photonische Technologien e.V. (Germany)
Martin Leich, Institut für Photonische Technologien e.V. (Germany)
Stephan Grimm, Institut für Photonische Technologien e.V. (Germany)
Jan Dellith, Institut für Photonische Technologien e.V. (Germany)
Matthias Jäger, Institut für Photonische Technologien e.V. (Germany)
Kay Schuster, Institut für Photonische Technologien e.V. (Germany)
Hagen Zimer, HIGHYAG Lasertechnologie GmbH (Germany)
Marcin Kozak, HIGHYAG Lasertechnologie GmbH (Germany)
Björn Wedel, HIGHYAG Lasertechnologie GmbH (Germany)
Georg Rehmann, Laserline GmbH (Germany)
Charley Bachert, Laserline GmbH (Germany)
Volker Krause, Laserline GmbH (Germany)


Published in SPIE Proceedings Vol. 8601:
Fiber Lasers X: Technology, Systems, and Applications
Sami T. Hendow, Editor(s)

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