Publications by authors named "Elena Firstova"

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Ultra-broadband optical amplifiers based on bismuth-doped heterogeneous-core fibers.
Sergey Alyshev, Alexander Kharakhordin, Andrey Umnikov, Denis Oleinik, Aleksandr Khegai, Elena Firstova

Opt Lett· August 2025

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Polarization-dependent gain in bismuth-doped phospho- and germanosilicate fiber amplifiers.
Alexander V Elopov, Konstantin E Riumkin, Fedor V Afanasiev, Sergey V Alyshev, Alexander V Kharakhordin, Elena G Firstova

Opt Lett· September 2024

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Supermode lasing and light amplification in multicore bismuth-doped fiber.
Sergey Alyshev, Alexander Vakhrushev, Andrey Umnikov, Vladimir Velmiskin, Denis Oleinik, Elena Firstova

Opt Express· August 2024

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Cladding-pumped laser and amplifier for E- and S-bands based on multimode bismuth-doped graded-index fibers: toward "watt-level" output power.
Alexander Vakhrushev, Andrey Umnikov, Alexander Dostovalov, Konstantin Riumkin, Sergey Alyshev, Elena Firstova

Opt Lett· April 2024

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Cladding pumped bismuth-doped fiber amplifiers operating in O-, E-, and S-telecom bands.
Alexander Vakhrushev, Aleksandr Khegai, Sergey Alyshev, Konstantin Riumkin, Alexander Kharakhordin, Elena Firstova

Opt Lett· March 2023

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Cladding-pumped bismuth-doped fiber laser.
Sergei Firstov, Andrey Umnikov, Aleksandr Kharakhordin, Alexander Vakhrushev, Elena Firstova

Opt Lett· February 2022

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Compact and efficient O-band bismuth-doped phosphosilicate fiber amplifier for fiber-optic communications.
Sergei V Firstov, Aleksandr M Khegai, Alexander V Kharakhordin, Sergey V Alyshev, Elena G Firstova

Sci Rep· July 2020

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Bend-insensitive bismuth-doped PO-SiO glass core fiber for a compact O-band amplifier.
Sergei Firstov, Aleksandr Khegai, Konstantin Riumkin, Yan Ososkov, Elena Firstova

Opt Lett· May 2020

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Photostability of laser-active centers in bismuth-doped GeO-SiO glass fibers under pumping at 1550 nm.
Sergey Alyshev, Alexander Kharakhordin, Elena Firstova, Aleksandr Khegai, Mikhail Melkumov

Opt Express· October 2019

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Formation of laser-active centers in bismuth-doped high-germania silica fibers by thermal treatment.
Sergei Firstov, Alexander Kharakhordin, Sergey Alyshev, Konstantin Riumkin, Elena Firstova

Opt Express· May 2018

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Anti-Stokes luminescence in bismuth-doped silica and germania-based fibers.
Sergei V Firstov, Vladimir F Khopin, Vladimir V Velmiskin, Elena G Firstova, Igor A Bufetov

Opt Express· July 2013

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Optical gain and laser generation in bismuth-doped silica fibers free of other dopants.
Igor A Bufetov, Mikhail A Melkumov, Sergey V Firstov, Alexey V Shubin, Sergey L Semenov, Elena G Firstova

Opt Lett· January 2011

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