Email this article ALL-FIBER SIDE-PUMPED TAPERED AMPLIFIER OF THE ps-PULSES
- Authors: Mikhailov E.K.1, Levchenko A.E.1, Velmiskin V.V.1, Zaushitsyna T.S.1, Lipatov D.S.2, Shirmankin A.V.3, Kamynin V.A.3, Likhachev M.E.1
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Affiliations:
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center of the Russian Academy of Sciences, Moscow, Russia
- G.G. Devyatykh Institute of Chemistry of High Purity Substances of the Russian Academy of Sciences, Nizhny Novgorod, Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
- Issue: Vol 523, No 1 (2025)
- Pages: 81-86
- Section: ТЕХНИЧЕСКИЕ НАУКИ
- URL: https://journals.rcsi.science/2686-7400/article/view/309486
- DOI: https://doi.org/10.7868/S3034508125040122
- EDN: https://elibrary.ru/qlznwe
- ID: 309486
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Abstract
This paper presents the results of an optimization process conducted on an all-fiber ps-pulse amplifier with sub-MW peak power, operating at a wavelength of 1064 nm, with a final amplifying stage based on a ytterbium-doped tapered fiber. The double-cladded active fiber was counter-pumped through the side surface. Two tapered fibers, with maximum core and cladding diameters of 39/375 and 58/625 µm, were utilized (in both cases, the thin part of the tapered fibers was single-mode with a geometry of ~8/80 µm). The optimal profile of the pump-feeding fiber was determined, the high-power unstable fixation polymer was eliminated, and a tapered fiber with an additional narrowing at the output end was used to compensate the increased numerical aperture of the injected pump. As a result, 42 W of average power was obtained with 9 ps pulse amplification, and the maximum achieved peak power was 0.62 MW.
About the authors
E. K. Mikhailov
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center of the Russian Academy of Sciences, Moscow, Russia
Email: egor.mikhailov@fo.gpi.ru
A. E. Levchenko
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center of the Russian Academy of Sciences, Moscow, Russia
Email: egor.mikhailov@fo.gpi.ru
V. V. Velmiskin
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center of the Russian Academy of Sciences, Moscow, Russia
Email: egor.mikhailov@fo.gpi.ru
T. S. Zaushitsyna
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center of the Russian Academy of Sciences, Moscow, Russia
Email: egor.mikhailov@fo.gpi.ru
D. S. Lipatov
G.G. Devyatykh Institute of Chemistry of High Purity Substances of the Russian Academy of Sciences, Nizhny Novgorod, Russia
Email: egor.mikhailov@fo.gpi.ru
A. V. Shirmankin
Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
Email: egor.mikhailov@fo.gpi.ru
V. A. Kamynin
Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
Email: egor.mikhailov@fo.gpi.ru
M. E. Likhachev
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center of the Russian Academy of Sciences, Moscow, Russia
Author for correspondence.
Email: egor.mikhailov@fo.gpi.ru
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