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Proceedings Paper

160W single-mode single-frequency Yb-doped fiber laser with fiber Bragg grating inscribed by UV femtosecond exposure and two beam interference
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Paper Abstract

Fiber Bragg gratings (FBGs) are attractive as reflector elements in fully integrated all-fiber laser systems. Furthermore, FBGs made with femtosecond laser technology allow to reduce splice connections in the fiber, since no special photosensitive fibers are required. Fiber Bragg grating inscription with deep ultraviolet femtosecond laser (267 nm) and two beam interferometry allows to target germanium-free and non-photosensitive fibers while maintaining versatility in the choice of the output wavelength of the fiber laser. This concept offers the potential of gratings with high spatial resolution, great flexibility and good homogeneity and complements the methods of point-by-point inscription at 800 nm or of phase-mask inscription with 400 nm femtosecond laser exposure. We report on the application of the interferometric fiber Bragg grating inscription technology to build a grating-stabilized fiber laser with high beam purity. Output powers up 160 W have been achieved.

Paper Details

Date Published: 31 August 2011
PDF: 7 pages
Proc. SPIE 8007, Photonics North 2011, 80070B (31 August 2011); doi: 10.1117/12.904730
Show Author Affiliations
Martin Becker, Institute of Photonic Technology (Germany)
Sven Brückner, Institute of Photonic Technology (Germany)
Eric Lindner, Institute of Photonic Technology (Germany)
Martin Leich, Institute of Photonic Technology (Germany)
Manfred Rothhardt, Institute of Photonic Technology (Germany)
Sonja Unger, Institute of Photonic Technology (Germany)
Hartmut Bartelt, Institute of Photonic Technology (Germany)

Published in SPIE Proceedings Vol. 8007:
Photonics North 2011
Raman Kashyap; Michel Têtu; Rafael N. Kleiman, Editor(s)

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