Dr. Michal Kamradek Profile

Dr. Michal Kamradek

at Institute of Photonics and Electronics of the CAS vvi

SPIE Involvement:

Author

Publications (20)

Proceedings Article | 20 June 2024 Presentation

Presentation

Structured-core thulium-doped fibers for 2 μm fiber lasers

Pavel Peterka, Ryszard Buczynski, Dariusz Pysz, Ivan Kašík, Ondrej Podrazký, Michal Kamradek, Martin Grábner, Jan Aubrecht, Jan Pokorný, Bára Švejkarová, Pavel Honzátko

Proceedings Volume PC13003, PC130030D (2024) https://doi.org/10.1117/12.3022457

KEYWORDS: Fiber lasers, Structured optical fibers, YAG lasers, Thulium, Laser nanostructuring, Ytterbium, Structural design, Silica, Printing, Optical fibers

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Proceedings Article | 20 June 2024 Presentation

Presentation

Analytical model of holmium-doped fiber laser

J. Pokorný, J. Aubrecht, M. Kamrádek, M. Grábner, P. Peterka

Proceedings Volume PC13001, PC1300102 (2024) https://doi.org/10.1117/12.3017584

KEYWORDS: Analytic models, Fiber lasers, Continuous wave operation, Systems modeling, Laser resonators, Fiber amplifiers, Specialty optical fibers, Silica, Performance modeling, Modeling

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Proceedings Article | 20 June 2024 Presentation

Presentation

Nanoparticle doping method for highly thulium-doped optical fibers for efficient, eye-safe fiber lasers – A fluorescence lifetime study

Petr Varák, Michal Kamradek, Jan Aubrecht, Ondrej Podrazký, Ivo Barton, Ivan Kašík, Pavel Peterka, Pavel Honzátko

Proceedings Volume PC13001, PC1300101 (2024) https://doi.org/10.1117/12.3014695

KEYWORDS: Doping, Nanoparticles, Fluorescence, Fiber lasers, Optical fibers, Ions, Spectroscopy, Fluorescence spectroscopy, Chromium, Solubility

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Proceedings Article | 6 June 2024 Poster

Poster

Broadband thulium fiber amplifier for spectral region located beyond the L-band

Jan Aubrecht, Jan Pokorný, Michal Kamrádek, Bára Švejkarová, Matěj Komanec, Pavel Peterka

Proceedings Volume PC13001, PC130010H (2024) https://doi.org/10.1117/12.3016700

KEYWORDS: Thulium, L band, Fiber amplifiers, Optical fibers, Telecommunications, Ions, Emission wavelengths, Waveguides, Wave propagation, Silica

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Proceedings Article | 12 March 2024 Paper

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 Poster + Paper

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

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

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

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 | 18 April 2021 Presentation

Presentation

Energy transfer coefficients in thulium-doped silica fibers

Michal Kamradek, Pavel Peterka, Jakub Cajzl, Petr Vařák, Jan Aubrecht, Ondřej Podrazký, Pavel Honzátko, Ivan Kašík

Proceedings Volume 11773, 117730I (2021) https://doi.org/10.1117/12.2590205

KEYWORDS: Optical fibers, Fiber lasers, Energy transfer, Luminescence, Modeling, Chromium, Thulium, Telecommunications, Silica, Photons

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Proceedings Article | 18 April 2021 Poster + Presentation + Paper

Poster + Presentation + Paper

Nanocrystalline ZrO2-doped active optical fibers for fiber lasers operating at 2 μm

P. Vařák, J. Mrázek, W. Blanc, J. Aubrecht, M. Kamrádek, O. Podrazký, P. Honzátko

Proceedings Volume 11773, 1177317 (2021) https://doi.org/10.1117/12.2589127

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Proceedings Article | 1 April 2020 Presentation + Paper

Presentation + Paper

Holmium-doped optical fibers for efficient fiber lasers

M. Kamrádek, I. Kašík, J. Aubrecht, J. Mrázek, O. Podrazký, J. Cajzl, P. Varák, V. Kubeček, P. Peterka, P. Honzátko

Proceedings Volume 11355, 113550C (2020) https://doi.org/10.1117/12.2559176

KEYWORDS: Fiber lasers, Holmium, Nanoparticles, Optical fibers, Silica

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Proceedings Article | 1 April 2020 Presentation

Presentation

Reduction of water penetration into optical fiber preforms for improving preform shaping based on CO2 laser (Conference Presentation)

Ali Jasim, Ondrej Podrazký, Pavel Peterka, Michal Kamrádek, Filip Todorov, Pavel Honzátko

Proceedings Volume 11355, 113550B (2020) https://doi.org/10.1117/12.2555882

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Proceedings Article | 16 April 2019 Presentation + Paper

Presentation + Paper

Spectroscopic characterization of holmium-doped optical fibers for fiber lasers

M. Kamrádek, J. Aubrecht, P. Peterka, O. Podrazký, P. Honzátko, J. Cajzl, J. Mrázek, V. Kubeček, I. Kašík

Proceedings Volume 11029, 1102908 (2019) https://doi.org/10.1117/12.2520880

KEYWORDS: Doping, Fiber lasers, Holmium, Nanoparticles, Optical fibers, Silica, Luminescence, Absorption, Aluminum, Fiber characterization

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Proceedings Article | 17 May 2018 Paper

Paper

Silica- and germanate-based rare earth doped glasses for fiber lasers

M. Kamrádek, I. Kašík, P. Peterka, J. Aubrecht, O. Podrazký, P. Honzátko, J. Mrázek, V. Kubeček

Proceedings Volume 10683, 106832L (2018) https://doi.org/10.1117/12.2306263

KEYWORDS: Glasses, Refractive index, Fiber lasers, Silica, Mid-IR, Absorption, Chemical vapor deposition, Infrared radiation, Transparency, Doping

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Proceedings Article | 1 December 2017 Paper

Paper

Evaluation of energy transfer coefficients in Tm-doped fibers for fiber lasers

Jakub Cajzl, Pavel Peterka, Pavel Honzátko, Ondřej Podrazký, Michal Kamrádek, Jan Aubrecht, Jana Proboštová, Ivan Kašík

Proceedings Volume 10603, 106030G (2017) https://doi.org/10.1117/12.2296342

KEYWORDS: Optical fibers, Thulium, Luminescence, Glasses, Silica, Energy transfer, Ions, Nanoparticles, Fiber lasers

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Proceedings Article | 1 December 2017 Paper

Paper

Thulium-doped optical fibers for fiber lasers

M. Kamrádek, J. Aubrecht, P. Peterka, O. Podrazký, P. Honzátko, J. Cajzl, J. Mrázek, V. Kubeček, I. Kašík

Proceedings Volume 10603, 106030V (2017) https://doi.org/10.1117/12.2292026

KEYWORDS: Doping, Fiber lasers, Nanoparticles, Thulium, Optical fibers, Luminescence, Silica, Absorption, Ions, Refractive index

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Proceedings Article | 1 December 2017 Paper

Paper

Monolithic thulium-doped fiber laser

J. Aubrecht, P. Peterka, P. Honzátko, F. Todorov, O. Podrazký, M. Kamrádek, J. Proboštová, I. Kašík

Proceedings Volume 10603, 106030L (2017) https://doi.org/10.1117/12.2292912

KEYWORDS: Fiber lasers, Optical fibers, Fiber Bragg gratings

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Proceedings Article | 16 May 2017 Presentation + Paper

Presentation + Paper

Spectral properties of thulium doped optical fibers for fiber lasers around 2 micrometers

M. Kamrádek, J. Aubrecht, P. Peterka, O. Podrazký, P. Honzátko, J. Cajzl, J. Mrázek, V. Kubeček, I. Kašik

Proceedings Volume 10232, 1023205 (2017) https://doi.org/10.1117/12.2265697

KEYWORDS: Ions, Silica, Absorption, Doping, Aluminum, Semiconductor lasers, Fiber lasers, Optical fibers, Thulium, Holmium, Luminescence, Photonics, Laser development, Wireless communications

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Proceedings Article | 22 February 2017 Presentation + Paper

Presentation + Paper

Spontaneous laser-line sweeping in Ho-doped fiber laser

Jan Aubrecht, Pavel Peterka, Pavel Koška, Pavel Honzátko, Michal Jelínek, Michal Kamrádek, Milan Frank, Václav Kubeček, Ivan Kašík

Proceedings Volume 10083, 100831V (2017) https://doi.org/10.1117/12.2249486

KEYWORDS: Fiber lasers, Tunable lasers, Holmium, Laser resonators, Fiber amplifiers, Ytterbium, Erbium, Thulium, Spectroscopy, Fiber Bragg gratings, FT-IR spectroscopy, Absorption, Interferometers, Picosecond phenomena

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Showing 5 of 20 publications

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