Dr. Ivo Barton Profile

Dr. Ivo Barton

at Institute of Photonics and Electronics of the CAS, v.v.i.

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 12 March 2024 Paper

Dual-wavelength fiber lasers based on active fibers with structured cores

Pavel Peterka, Ivo Bartoň, Petr Vařák, Marcin Franzcyk, Jan Aubrecht, Rafal Kasztelanic, Michal Kamrádek, Dariusz Pysz, Ondřej Podrazký, Ivan Kašík, Ryszard Buczynski

Proceedings Volume 12865, 1286512 (2024) https://doi.org/10.1117/12.3000800

KEYWORDS: Fiber lasers, Structured optical fibers, Ytterbium, Erbium, Heat treatments, Single mode fibers, Photonics, Photonic nanostructures

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Proceedings Article | 30 May 2023 Paper

Nanocrystalline ceramic coatings for the capillary fiber lasers

Ondrej Podrazky, Jan Mrázek, Petr Vařák, Jana Proboštová, Ivo Bartoň, Ivan Kašík

Proceedings Volume 12573, 125730X (2023) https://doi.org/10.1117/12.2665632

KEYWORDS: Capillaries, Luminescence, Nanocrystals, Holmium, Silica, Thin films, Optical properties, Glasses, Fiber lasers, Thin film coatings

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Proceedings Article | 30 May 2023 Poster + Paper

Optimization of erbium and ytterbium concentration in nanostructured core fiber for dual-wavelength fiber lasers

I. Barton, M. Franczyk, P. Peterka, J. Aubrecht, P. Vařák, M. Kamrádek, O. Podrazký, R. Kasztelanic, R. Buczynski, I. Kašík

Proceedings Volume 12573, 1257311 (2023) https://doi.org/10.1117/12.2666703

KEYWORDS: Ytterbium, Erbium, Fiber lasers, Laser nanostructuring, Silica, Refractive index, Nanostructuring, Ions, Cladding

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Proceedings Article | 30 May 2023 Poster + Paper

Luminescence lifetime of Er-doped silica optical fibers: the role of composition and fabrication processing

Petr Vařák, Ivan Kašík, Pavel Peterka, Jan Aubrecht, Jan Mrázek, Michal Kamradek, Ondrej Podrazky, Ivo Barton, Marcin Franczyk, Ryszard Buczynski, Pavel Honzatko

Proceedings Volume 12573, 1257310 (2023) https://doi.org/10.1117/12.2666162

KEYWORDS: Erbium, Ions, Fluorescence, Optical fibers, Fabrication, Silica, Luminescence, Aluminum, Refractive index, Glasses

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Proceedings Article | 19 May 2022 Presentation + Paper

The effect of fiber fabrication process on the photoluminescence properties of RE-doped optical fiber preforms and fibers

Petr Vařák, Ivan Kašík, Pavel Peterka, Jan Aubrecht, Jan Mrázek, Michal Kamrádek, Ondřej Podrazky, Ivo Bartoň, Ryszard Buczynski, Marcin Franczyk, Pavel Honzátko

Proceedings Volume 12140, 1214005 (2022) https://doi.org/10.1117/12.2620487

KEYWORDS: Luminescence, Optical fibers, Ions, Holmium, Aluminum, Heat treatments, Nanoparticles, Silica, Refractive index, Diffusion

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Proceedings Article | 4 March 2022 Presentation + Paper

The effect of thermal and mechanical processing on the fluorescence lifetime of Yb-doped silica preforms and fibers for use in nanostructured-core fiber lasers

Petr Vařák, Ivan Kašík, Pavel Peterka, Jan Mrázek, Michal Kamrádek, Jan Aubrecht, Ondřej Podrazký, Ivo Bartoň, Marcin Franczyk, Ryszard Buczynski, Pavel Honzátko

Proceedings Volume 11981, 1198103 (2022) https://doi.org/10.1117/12.2608684

KEYWORDS: Optical fibers, Luminescence, Ytterbium, Ions, Aluminum, Silica, Nanoparticles, Heat treatments, Refractive index, Thermal effects

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Proceedings Article | 16 April 2019 Paper

Capillary optical fiber with a Bragg mirror of arsenic sulfide and polymers applied onto the inner capillary wall

Vlastimil Matějec, Jitka Pedlikova, Ivo Barton, Milan Frank, Michal Jelinek, Vaclav Kubeček

Proceedings Volume 11029, 1102910 (2019) https://doi.org/10.1117/12.2521769

KEYWORDS: Optical fibers, Capillaries, Arsenic, Silica, Glasses, Multilayers, Polymers, Cladding, Photonics, Optical coatings

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Recently optical capillaries modified by Bragg reflection mirrors applied on the inner walls have been investigated for transmitting radiation of MIR lasers. Such capillaries include Bragg and omniguide fibers, holley fibers, or silica Kagome like fibers. Although OmniGuide fibers are commercially available and have been used for delivery of radiation of CO₂ fibers at 10.6 μm, novel types of hollow-core fibers are still investigated for MIR applications. In this paper a novel approach for the preparation of capillary optical fibers for MIR region is presented. This approach employs the application of thin layers of arsenic sulfide glass and acrylate polymer from their solutions onto the inner wall of silica capillary. Arsenic sulfide forms high-index and polymers the low-index parts of reflection mirrors. By controlling optical thicknesses of such layers, Bragg mirrors can be obtained. In experiments, input solutions of arsenic sulfide in n-propylamine and UV-curable acrylate in acetone were prepared. Such solutions were applied by dip-coating method on glass slides in order to obtain samples of single layers and multilayer coatings for the determination of thicknesses and refractive indices. Acrylate layers were UV cured and arsenic sulfide layer were thermally treated at 80°C. By passing columns of the input solutions through a silica capillary with a hole diameter of 80 μm and a length of 50 cm multilayer coatings on the inner capillary wall were prepared. The column velocity for each solution was controlled as a main factor influencing the layer thickness. Applied layers were UV cured or thermally treated under a nitrogen flow through the capillary. Coatings of three pairs of the high- and low-index layers were fabricated. Single layers and multilayers applied on planar substrates were characterized by transmission spectroscopy and by optical microscopy. Attenuation coefficients of internally coated capillary fibers of 10-20 dB/m were determined at a wavelength of 1940 nm.