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Proceedings Paper

Record peak power single-frequency erbium-doped fiber amplifiers
Author(s): L. V. Kotov; Mikhail E. Likhachev; M. M. Bubnov; V. M. Paramonov; M. I. Belovolov; D. S. Lipatov; A. N. Guryanov
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Paper Abstract

In this work we present results on the amplification of narrow-linewidth nanosecond pulses in a recently developed ytterbium-free erbium-doped large mode area fiber cladding pumped at 980 nm. At first, a co-propagating all fiber amplifier scheme was used. Using 1 m of active fiber length in such configuration a peak power of 4 kW limited by instabilities caused by stimulated Brillouin scattering (SBS) was achieved. To the best of our knowledge this is the highest peak power ever reported for single-frequency single mode silica-based fiber sources near 1550 nm. Then all fiber counter-pumped configuration with 6 m of active fiber was used and peak power of 900 W was obtained. In this case peak power was limited by SBS generation in a passive fiber at the laser output. Slope electrical-to-optical conversion efficiency of 8 % demonstrated in such scheme is a record value for kW-level single mode single-frequency Er-doped nanosecond fiber lasers.

Paper Details

Date Published: 4 March 2015
PDF: 7 pages
Proc. SPIE 9344, Fiber Lasers XII: Technology, Systems, and Applications, 934408 (4 March 2015); doi: 10.1117/12.2079025
Show Author Affiliations
L. V. Kotov, Fiber Optics Research Ctr. (Russian Federation)
Moscow Institute of Physics and Technology (Russian Federation)
Mikhail E. Likhachev, Fiber Optics Research Ctr. (Russian Federation)
M. M. Bubnov, Fiber Optics Research Ctr. (Russian Federation)
V. M. Paramonov, Fiber Optics Research Ctr. (Russian Federation)
M. I. Belovolov, Fiber Optic Research Ctr. (Russian Federation)
D. S. Lipatov, Institute of Chemistry of High-Purity Substancea (Russian Federation)
Lobachevsky State Univ. of Nizhni Novgorod (Russian Federation)
A. N. Guryanov, Institute of Chemistry of High-Purity Substances (Russian Federation)

Published in SPIE Proceedings Vol. 9344:
Fiber Lasers XII: Technology, Systems, and Applications
L. Brandon Shaw, Editor(s)

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