Photonics
(Nov 2021)
Er-Doped Tapered Fiber Amplifier for High Peak Power Sub-ns Pulse Amplification
Maksim M. Khudyakov,
Andrei E. Levchenko,
Vladimir V. Velmiskin,
Konstantin K. Bobkov,
Svetlana S. Aleshkina,
Mikhail M. Bubnov,
Mikhail V. Yashkov,
Aleksei N. Gur’yanov,
Leonid V. Kotov,
Mikhail E. Likhachev
Affiliations
Maksim M. Khudyakov
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center, 38 Vavilov Street, 119333 Moscow, Russia
Andrei E. Levchenko
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center, 38 Vavilov Street, 119333 Moscow, Russia
Vladimir V. Velmiskin
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center, 38 Vavilov Street, 119333 Moscow, Russia
Konstantin K. Bobkov
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center, 38 Vavilov Street, 119333 Moscow, Russia
Svetlana S. Aleshkina
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center, 38 Vavilov Street, 119333 Moscow, Russia
Mikhail M. Bubnov
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center, 38 Vavilov Street, 119333 Moscow, Russia
Mikhail V. Yashkov
Institute of Chemistry of High Purity Substances of the Russian Academy of Sciences, 49 Tropinin Street, 603950 Nizhny Novgorod, Russia
Aleksei N. Gur’yanov
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center, 38 Vavilov Street, 119333 Moscow, Russia
Leonid V. Kotov
James C. Wyant College of Optical Sciences, University of Arizona, 1630 E. University Blvd, Tucson, AZ 85721-0094, USA
Mikhail E. Likhachev
Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center, 38 Vavilov Street, 119333 Moscow, Russia
DOI
https://doi.org/10.3390/photonics8120523
Journal volume & issue
Vol. 8,
no. 12
Abstract
Read online
A tapered Er-doped fiber amplifier for high peak power pulses amplification has been developed and tested. The core diameter changed from 15.8 µm (mode field diameter (MFD) 14.5 µm) to 93 µm (MFD 40 µm) along 3.7 m maintaining single-mode performance at 1555 nm (according to the S2-method, the part of the power of high-order modes does not exceed 1.5%). The amplification of 0.9 ns pulses with spectral width below 0.04 nm up to a peak power above 200 kW (limited by self-phase modulation) with a slope pump-to-signal conversion efficiency of 15.6% was demonstrated.
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