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Monolithic diffraction-limited 976-nm laser based on saddle-shaped photo darkening-free Yb-doped fiber
Author(s): Svetlana S. Aleshkina; Denis S. Lipatov; Andrei E. Levchenko; Oleg I. Medvedkov; Konstantin K. Bobkov; Mikhail M. Bubnov; Alexei N. Guryanov; Mikhail E. Likhachev
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Paper Abstract

Monolithic 976 nm laser design based on a newly developed saddle-shaped Yb-doped fiber has been proposed. The fiber has central single-mode part with core diameter of about 12 μm and ultra-thin square-shaped clad with side of about 42x42 μm. At the both ends of the saddle-shaped fiber the core and the clad sizes were adiabatically increased up to 20/(70x70) μm and the fiber could be spliced with standard (80..125 μm clad) passive fibers using commercially available equipment. Single-mode laser at 976 nm based on the developed fiber has been fabricated and photodarkening-free operation with output power of 10.6 W, which is the record high for all-fiber laser schemes, has been demonstrated.

Paper Details

Date Published: 26 February 2018
PDF: 8 pages
Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105121R (26 February 2018); doi: 10.1117/12.2289918
Show Author Affiliations
Svetlana S. Aleshkina, Fiber Optics Research Ctr. (Russian Federation)
Denis S. Lipatov, Institute of Chemistry of High-Purity Substances (Russian Federation)
Andrei E. Levchenko, Fiber Optics Research Ctr. (Russian Federation)
Oleg I. Medvedkov, Fiber Optics Research Ctr. (Russian Federation)
Konstantin K. Bobkov, Fiber Optics Research Ctr. (Russian Federation)
Mikhail M. Bubnov, Fiber Optics Research Ctr. (Russian Federation)
Alexei N. Guryanov, Institute of Chemistry of High-Purity Substances (Russian Federation)
Mikhail E. Likhachev, Fiber Optics Research Ctr. (Russian Federation)


Published in SPIE Proceedings Vol. 10512:
Fiber Lasers XV: Technology and Systems
Ingmar Hartl; Adrian L. Carter, Editor(s)

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