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A picosecond fiber laser based on a tapered ytterbium fiber with the low birefringence

Kozlov Artemy ; Medvedev Andrey ; Motorin Evgenii ; Savelyev Evgeny ; Temkina Valentina ; Filippov Valery

St. Petersburg Polytechnical University Journal. Physics and Mathematics, 2024-03, Vol.17 (1) [Periódico revisado por pares]

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Título:
A picosecond fiber laser based on a tapered ytterbium fiber with the low birefringence
Autor: Kozlov Artemy ; Medvedev Andrey ; Motorin Evgenii ; Savelyev Evgeny ; Temkina Valentina ; Filippov Valery
Assuntos: intrinsic birefringence ; picosecond fiber laser ; ytterbium spun tapered fiber
É parte de: St. Petersburg Polytechnical University Journal. Physics and Mathematics, 2024-03, Vol.17 (1)
Descrição: This paper presents the results of the experimental study of a fiber laser connected according to the MOPA scheme, where a power amplifier was made of an ytterbium double-clad tapered spun fiber with low intrinsic birefringence. A peak output power of 160 kW with the average power of 160 W has been achieved at 1040 nm wavelength, 50 ps pulse duration and its repetition frequency of 20 MHz; the laser beam quality parameter and the mode-spot diameter being 1.15 and 35 μm, respectively. The values of azimuth, ellipticity and degree of polarization of the output radiation were found; their little sensitivity to the pump power was demonstrated. This research was the next important step in the development of high-power picosecond fiber lasers technology.
Editor: Peter the Great St.Petersburg Polytechnic University
Idioma: Inglês

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