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Kvantovaya Elektronika, 2017, Volume 47, Number 12, Pages 1109–1114 (Mi qe16735)  

This article is cited in 13 scientific papers (total in 13 papers)

Special Issue 'Optical Fibres and Their Applications'

Factors reducing the efficiency of ytterbium fibre lasers and amplifiers operating near 0.98 μm

S. S. Aleshkinaa, T. L. Bardinaab, D. S. Lipatovc, K. K. Bobkova, M. M. Bubnova, A. N. Gur'yanovc, M. E. Likhacheva

a Fiber Optics Research Center of the Russian Academy of Sciences, Moscow
b Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region
c Institute of Chemistry of High-Purity Substances RAS, Nizhnii Novgorod
References:
Abstract: We have studied the factors that reduce the efficiency of cladding-pumped ytterbium fibre lasers and amplifiers operating in the spectral range around a wavelength of 0.98 μm. It has been shown that the core of the active fibre being not single-mode leads to accelerated development of amplified spontaneous luminescence around λ = 1.03 μm, which reduces the highest possible amplifier efficiency. We have examined the effect of spontaneous luminescence propagating in the first reflective cladding. It has been shown theoretically that the pump-to-signal conversion efficiency is highest when the ratio of the core and cladding diameters in a multimode active fibre lies in the range 0.7–1. We have fabricated and characterised an optical fibre with a core-to-cladding diameter ratio of 0.76 (core and cladding diameters of 95 and 125 μm, respectively), which allowed a pump conversion efficiency of 66% to be reached, a record level for cladding-pumped ytterbium fibre laser systems emitting near 0.98 μm.
Keywords: ytterbium-doped optical fibre, large mode area fibre, ytterbium fibre laser.
Funding agency Grant number
Russian Science Foundation 16-12-10553
Received: 23.10.2017
English version:
Quantum Electronics, 2017, Volume 47, Issue 12, Pages 1109–1114
DOI: https://doi.org/10.1070/QEL16549
Bibliographic databases:
Document Type: Article
Language: Russian


Citation: S. S. Aleshkina, T. L. Bardina, D. S. Lipatov, K. K. Bobkov, M. M. Bubnov, A. N. Gur'yanov, M. E. Likhachev, “Factors reducing the efficiency of ytterbium fibre lasers and amplifiers operating near 0.98 μm”, Kvantovaya Elektronika, 47:12 (2017), 1109–1114 [Quantum Electron., 47:12 (2017), 1109–1114]
Linking options:
  • https://www.mathnet.ru/eng/qe16735
  • https://www.mathnet.ru/eng/qe/v47/i12/p1109
  • This publication is cited in the following 13 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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