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Title: Fibre amplifier based on an ytterbium-doped active tapered fibre for the generation of megawatt peak power ultrashort optical pulses

Abstract

We report a new ytterbium-doped active tapered fibre used in the output amplifier stage of a fibre laser system for the generation of megawatt peak power ultrashort pulses in the microjoule energy range. The tapered fibre is single-mode at its input end (core and cladding diameters of 10 and 80 μm) and multimode at its output end (diameters of 45 and 430 μm), but ultrashort pulses are amplified in a quasi-single-mode regime. Using a hybrid Er/Yb fibre system comprising an erbium master oscillator and amplifier at a wavelength near 1.5 μm, a nonlinear wavelength converter to the 1 μm range and a three-stage ytterbium-doped fibre amplifier, we obtained pulses of 1 μJ energy and 7 ps duration, which were then compressed by a grating-pair dispersion compressor with 60% efficiency to a 130 fs duration, approaching the transform-limited pulse duration. The present experimental data agree well with numerical simulation results for pulse amplification in the threestage amplifier. (extreme light fields and their applications)

Authors:
; ; ; ; ;  [1]; ; ; ; ; ; ;  [2]; ;  [3]
  1. Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod (Russian Federation)
  2. Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation)
  3. G.G.Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation)
Publication Date:
OSTI Identifier:
22551254
Resource Type:
Journal Article
Journal Name:
Quantum Electronics (Woodbury, N.Y.)
Additional Journal Information:
Journal Volume: 45; Journal Issue: 5; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7818
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLIFICATION; AMPLIFIERS; COMPUTERIZED SIMULATION; DOPED MATERIALS; EFFICIENCY; ENERGY RANGE; ERBIUM; EXPERIMENTAL DATA; FIBERS; GRATINGS; LASERS; NONLINEAR PROBLEMS; OPTICAL DISPERSION; OSCILLATORS; PEAK LOAD; PULSES; WAVELENGTHS; YTTERBIUM

Citation Formats

Koptev, M Yu, Anashkina, E A, Lipatov, D S, Andrianov, A V, Muravyev, S V, Kim, A V, Bobkov, K K, Likhachev, M E, Levchenko, A E, Aleshkina, S S, Semjonov, S L, Denisov, A N, Bubnov, M M, Laptev, A Yu, and Gur'yanov, A N. Fibre amplifier based on an ytterbium-doped active tapered fibre for the generation of megawatt peak power ultrashort optical pulses. United States: N. p., 2015. Web. doi:10.1070/QE2015V045N05ABEH015762.
Koptev, M Yu, Anashkina, E A, Lipatov, D S, Andrianov, A V, Muravyev, S V, Kim, A V, Bobkov, K K, Likhachev, M E, Levchenko, A E, Aleshkina, S S, Semjonov, S L, Denisov, A N, Bubnov, M M, Laptev, A Yu, & Gur'yanov, A N. Fibre amplifier based on an ytterbium-doped active tapered fibre for the generation of megawatt peak power ultrashort optical pulses. United States. doi:10.1070/QE2015V045N05ABEH015762.
Koptev, M Yu, Anashkina, E A, Lipatov, D S, Andrianov, A V, Muravyev, S V, Kim, A V, Bobkov, K K, Likhachev, M E, Levchenko, A E, Aleshkina, S S, Semjonov, S L, Denisov, A N, Bubnov, M M, Laptev, A Yu, and Gur'yanov, A N. Sun . "Fibre amplifier based on an ytterbium-doped active tapered fibre for the generation of megawatt peak power ultrashort optical pulses". United States. doi:10.1070/QE2015V045N05ABEH015762.
@article{osti_22551254,
title = {Fibre amplifier based on an ytterbium-doped active tapered fibre for the generation of megawatt peak power ultrashort optical pulses},
author = {Koptev, M Yu and Anashkina, E A and Lipatov, D S and Andrianov, A V and Muravyev, S V and Kim, A V and Bobkov, K K and Likhachev, M E and Levchenko, A E and Aleshkina, S S and Semjonov, S L and Denisov, A N and Bubnov, M M and Laptev, A Yu and Gur'yanov, A N},
abstractNote = {We report a new ytterbium-doped active tapered fibre used in the output amplifier stage of a fibre laser system for the generation of megawatt peak power ultrashort pulses in the microjoule energy range. The tapered fibre is single-mode at its input end (core and cladding diameters of 10 and 80 μm) and multimode at its output end (diameters of 45 and 430 μm), but ultrashort pulses are amplified in a quasi-single-mode regime. Using a hybrid Er/Yb fibre system comprising an erbium master oscillator and amplifier at a wavelength near 1.5 μm, a nonlinear wavelength converter to the 1 μm range and a three-stage ytterbium-doped fibre amplifier, we obtained pulses of 1 μJ energy and 7 ps duration, which were then compressed by a grating-pair dispersion compressor with 60% efficiency to a 130 fs duration, approaching the transform-limited pulse duration. The present experimental data agree well with numerical simulation results for pulse amplification in the threestage amplifier. (extreme light fields and their applications)},
doi = {10.1070/QE2015V045N05ABEH015762},
journal = {Quantum Electronics (Woodbury, N.Y.)},
issn = {1063-7818},
number = 5,
volume = 45,
place = {United States},
year = {2015},
month = {5}
}