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  1. No Access

    Article

    Continuous-Wave Bismuth-Doped Fiber Lasers with Multimode Diode Pum**

    The results in creation of continuous-wave bismuth-doped fiber lasers operating in a wavelength range of 1.3–1.5 \(\mu\) ...

    A. S. Vakhrushev, S. V. Alyshev… in Optoelectronics, Instrumentation and Data … (2023)

  2. No Access

    Article

    Lasing properties of thermally treated \(\hbox {GeO}_{2}\)–\(\hbox {SiO}_{2}\) glass fibers doped with bismuth

    We present results on the lasing properties of the Bi-doped high-germania glass fibers thermally treated at different heating and cooling conditions. The absorption and luminescence spectra, the luminescence l...

    A. V. Kharakhordin, S. V. Alyshev, E. G. Firstova, A. S. Lobanov… in Applied Physics B (2020)

  3. No Access

    Article

    Fabrication of Active Fluoroaluminosilicate Fibers for High-Power Fiber Lasers

    An all-vapor phase modified chemical vapor deposition (MCVD) process has been proposed for the fabrication of active-fiber preforms with a fluorine-rich F–Yb2O3–GeO2–Al2O3–SiO2 glass core. The composition of the ...

    A. N. Abramov, M. M. Bubnov, A. N. Guryanov, D. S. Lipatov… in Inorganic Materials (2018)

  4. No Access

    Article

    Spectra and Kinetics of YAG:0.5%Er3+ Radiation Under Pulsed Laser Thermal Excitation

    The dependences of single-crystal YAG:0.5%Er3+ spectra in the range 200–1700 nm and the kinetics of the integrated emission on the excitation-energy density W of a single CO2-laser pulse of ~100 ns FWHM duration ...

    V. M. Marchenko, M. A. Melkumov, Yu. A. Shakir in Journal of Applied Spectroscopy (2017)

  5. No Access

    Article

    A fiber-optic frequency transducer of variable pressure in gaseous and liquid media

    Fiber-optic sensors of variable pressure are proposed and implemented on fiber lasers with microoptomechanical resonance structures generating in automodulation regimes. Possibilities of sound pressure monitor...

    F. A. Egorov, V. T. Potapov, M. A. Melkumov, V. V. Amelichev… in Technical Physics Letters (2016)

  6. No Access

    Article

    Fabrication and optical characterization of silica fibers with a chromium- and alumina-doped core

    Silica fibers having a chromium-doped alumina-rich core have been produced by the MCVD process, and their optical properties have been studied. The results demonstrate that increasing the alumina concentration...

    A. N. Abramov, M. V. Yashkov, A. N. Guryanov, M. A. Melkumov… in Inorganic Materials (2014)

  7. Article

    Open Access

    Effect of absorption recovery in bismuth-doped silica glass at 1450 nm on soliton grou** in fiber laser

    Saturable absorption in bismuth-doped glasses was found to have a noticeable influence on soliton interaction and group formation. This phenomenon, observed in 1450 nm mode-locked bismuth-doped fiber laser, sh...

    R. Gumenyuk, M. A. Melkumov, V. F. Khopin, E. M. Dianov… in Scientific Reports (2014)

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  8. No Access

    Article

    Auto-oscillations in neodymium fiber lasers with micro-optomechanical structures

    Auto-oscillations in neodymium-doped fiber lasers with intracavity micro-optomechanical elements have been studied. Experimental results can be explained in the framework of ideas on the internal resonance in ...

    F. A. Egorov, V. T. Potapov, M. A. Melkumov, A. V. Shubin in Technical Physics Letters (2014)

  9. No Access

    Article

    Reaction between ∼0.7- to 1-μm α-Al2O3 particles and SiO2 during high-temperature sintering

    Al2O3:Cr3+ and Al2O3:Ti3+ particles with an average size of ∼1 and 0.7 μm, respectively, have been prepared through mechanical grinding of bulk crystals. Using purpose-designed accessories made from chromium and ...

    A. N. Guryanov, M. V. Yashkov, A. N. Abramov, E. D. Shatailo… in Inorganic Materials (2012)

  10. No Access

    Article

    Effects of Yb3+ and Er3+ concentrations and do** procedure on excitation transfer efficiency in Er-Yb doped phosphosilicate fibers

    We have studied the effects of preform fabrication procedure and ytterbium and erbium concentrations on the efficiency of excitation transfer from Yb3+ to Er3+ and lasing on erbium transitions in the range 1.53–1...

    M. A. Melkumov, A. Yu. Laptev, M. V. Yashkov, N. N. Vechkanov… in Inorganic Materials (2010)