Mr. Tomasz Fok Profile

Tomasz Fok

Doctoral Candidate at Wojskowa Akademia Techniczna

SPIE Involvement:

Author

Publications (25)

SPIE Journal Paper | 8 February 2024 Open Access

Open Access

Reflectance properties of the Acktar Magic Black™ coating for the radiation near the Lyman-α line of hydrogen: measurements and phenomenological model of the BRDF

Marek Strumik, Martyna Wardzińska, Maciej Bzowski, Przemysław Wachulak, Roman Wawrzaszek, Tomasz Fok, Andrzej Bartnik, Karol Mostowy, Henryk Fiedorowicz, Łukasz Węgrzyński, Mateusz Majszyk

JATIS, Vol. 10, Issue 01, 018004, (February 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.018004

KEYWORDS: Bidirectional reflectance transmission function, Reflectivity, Coating, Ultraviolet radiation, Simulations, Scattering, Extreme ultraviolet, Data modeling, Tunable filters, CCD cameras

Read Abstract +

Proceedings Article | 8 June 2023 Presentation

Presentation

Temporal and spectral investigation of EUV and SXR induced plasmas (Conference Presentation)

Andrzej Bartnik, Wojciech Skrzeczanowski, Mateusz Majszyk, Przemyslaw Wachulak, Henryk Fiedorowicz, Tomasz Fok, Lukasz Wegrzynski

Proceedings Volume PC12576, PC1257605 (2023) https://doi.org/10.1117/12.2664743

KEYWORDS: Plasmas, Extreme ultraviolet, Gases, Molecules, Ionization, Chemical species, Xenon, X-rays, X-ray sources, Ultraviolet radiation

Read Abstract +

Proceedings Article | 13 December 2022 Paper

Paper

Ray-tracing simulations of a UV/VUV beamline for the PolFEL free electron laser

Martyna Wardzińska, Henryk Fiedorowicz, Andrzej Bartnik, Tomasz Fok, Przemysław Wachulak, Łukasz Węgrzyński, Karolina Szamota-Leandersson, Jacek Krzywiński, Paweł Krawczyk, Mateusz Majszyk, Peter Baumgärtel, Frank Siewert, Andrey Sokolov

Proceedings Volume 12502, 1250206 (2022) https://doi.org/10.1117/12.2663447

KEYWORDS: Mirrors, Free electron lasers, Ultraviolet radiation, Optical simulations, Vacuum ultraviolet, X-rays, Monochromators, Diffraction gratings

Read Abstract +

Proceedings Article | 14 May 2019 Presentation

Presentation

Interaction of intense nanosecond pulses of extreme ultraviolet (EUV) with gases and solids (Conference Presentation)

Andrzej Bartnik, Wojciech Skrzeczanowski, Joanna Czwartos, Jerzy Kostecki, Henryk Fiedorowicz, Przemyslaw Wachulak, Tomasz Fok

Proceedings Volume 11035, 110350E (2019) https://doi.org/10.1117/12.2520742

KEYWORDS: Extreme ultraviolet, Gases, Solids, Plasma, Chemical species, Molecules, Ionization, Polymers, Pulsed laser operation, Laser systems engineering

Read Abstract +

In this work investigations concerning interaction of intense, nanosecond EUV pulses with matter were performed. Various laser-produced plasma radiation sources were employed for creation of the driving EUV pulses. The sources were based on two different laser systems with pulse energies ranging from 0.8 J to 10J and pulse duration 4 ÷ 10 ns. They were equipped with the EUV collectors for focusing of the radiation. This way radiation fluence up to 0.5 J/cm2 in the interaction region was obtained. In our experiments solid material samples or gases injected into the vacuum chamber synchronously with the EUV pulses were irradiated. Irradiation of the gases resulted in ionization and excitation of atoms and molecules forming low temperature plasmas with a relatively high electron density. Emission spectra obtained from these plasmas, contained spectral lines corresponding to radiative transitions in atoms, molecules, atomic or molecular ions. For analysis of the EUV spectra numerical simulations were performed, using a collisional-radiative PrismSPECT code. For computer simulations of the molecular spectra measured in the UV/VIS range a LIFBASE and Specair codes were employed. This way ionization states together with various thermodynamic parameters were deduced. Irradiation of solid samples resulted in melting of a thin near-surface layer or, in some cases its ablation or even conversion to a low temperature plasma. It depended on physico-chemical properties of the material and its thickness. In case of organic polymers, usually ablation connected with fragmentation of the polymer molecules, took place. In case of thick samples of inorganic solids, a thin near surface layer was heated up to a high temperature exceeding melting or even boiling point. In most cases different kinds of micro- or nanostructures were created, modifying the surface morphology. Except the EUV interaction with solid materials, simultaneous EUV and the EUV induced plasma treatment was investigated. Plasmas were created in gases injected close to the exposed surface. Part of the EUV radiation was absorbed in the injected gas forming the low temperature plasma near the surface, while the other part of radiation, that was not absorbed, interacted with the surface material. This way additional atoms could be incorporated into the molecular structure of the exposed material, or reactive etching took place. Especially interesting results were obtained using molecular gases for creation the reactive plasmas.

Proceedings Article | 26 April 2019 Presentation + Paper

Presentation + Paper

EUV-induced plasmas created using intense ionizing radiation pulses from laser-produced plasma sources

A. Bartnik, P. Wachulak, H. Fiedorowicz, T. Fok, Ł. Wegrzynski

Proceedings Volume 11032, 110320I (2019) https://doi.org/10.1117/12.2520355

KEYWORDS: Extreme ultraviolet, Plasmas, Gases, Ions, Electrons, Mirrors, Signal detection, Argon, Xenon, Krypton

Read Abstract +

Proceedings Article | 26 April 2019 Presentation + Paper

Presentation + Paper

Cluster and aerosol targets, produced using a gas puff approach, for laser-matter interaction experiments

Ł. Węgrzyński, A. Bartnik, P. Wachulak, T. Fok, K. Janulewicz, H. Fiedorowicz

Proceedings Volume 11032, 110320L (2019) https://doi.org/10.1117/12.2527307

KEYWORDS: Aerosols, Laser scattering, Light scattering, Laser-matter interactions, Plasma

Read Abstract +

Proceedings Article | 26 April 2019 Paper

Paper

Pulsed radiography and tomography of transient and low-density objects using laser plasma sources of extreme ultraviolet (EUV)

Tomasz Fok, Przemysław Wachulak, Łukasz Węgrzyński, Andrzej Bartnik, Roman Jarocki, Henryk Fiedorowicz

Proceedings Volume 11032, 110320M (2019) https://doi.org/10.1117/12.2527306

KEYWORDS: Extreme ultraviolet, Argon, Tomography, Modulation, Radiography, Helium, Plasma, Gases, 3D modeling, Pulsed laser operation

Read Abstract +

Proceedings Article | 24 April 2019 Paper

Paper

Plasma density shaping for attosecond electron bunch generation

Andrzej Kornaszewski, Roman Spesyvtsev, Mohammed Shahzad, Enrico Brunetti, Przemysław Wachulak, Tomasz Fok, Łukasz Węgrzyński, Giorgio Battaglia, Bernard Ersfeld, James Feehan, Lucas Inigo Gamiz, Karolina Kokurewicz, Wentao Li, Antoine Maitrallain, Adam Noble, Lewis Reid, Matthew Tooley, Gregory Vieux, Samuel Wiggins, Sam Yoffe, Henryk Fiedorowicz, Dino Jaroszynski

Proceedings Volume 11036, 110360R (2019) https://doi.org/10.1117/12.2522780

KEYWORDS: Plasma, Extreme ultraviolet, Pulsed laser operation, 3D modeling, Computer simulations, Modulation

Read Abstract +

Proceedings Article | 24 April 2019 Presentation + Paper

Presentation + Paper

Near-edge x-ray absorption fine structure spectroscopy with laser plasma sources of soft x-ray radiation

P. Wachulak, M. Duda, T. Fok, A. Bartnik, Ł. Węgrzyński, H. Fiedorowicz

Proceedings Volume 11035, 110350M (2019) https://doi.org/10.1117/12.2522246

KEYWORDS: Absorption, Spectroscopy, X-rays, Plasma, Laser spectroscopy, Plasma spectroscopy, Polymers

Read Abstract +

Proceedings Article | 3 January 2019 Paper

Paper

A single-shot near edge x-ray absorption fine structure spectroscopy using double stream gas puff target source

Martin Duda, Przemysław Wachulak, Tomasz Fok, Łukasz Węgrzyński, Alexandr Jančárek, Henryk Fiedorowicz

Proceedings Volume 11042, 110420T (2019) https://doi.org/10.1117/12.2522429

KEYWORDS: Absorption, Spectroscopy, X-rays, Nitrogen, Absorption spectroscopy, Silicon, Plasma, Carbon, Numerical simulations

Read Abstract +

Proceedings Article | 18 December 2018 Paper

Paper

Optical systems for laser-produced plasma EUV and soft x-ray sources

A. Bartnik, H. Fiedorowicz, P. Wachulak, T. Fok, Ł. Węgrzyński

Proceedings Volume 10976, 109760K (2018) https://doi.org/10.1117/12.2518202

KEYWORDS: Extreme ultraviolet, Plasma, Mirrors, Xenon, Gases, Sensors, Krypton, Neon, X-ray sources, Pulsed laser operation

Read Abstract +

Proceedings Article | 4 December 2018 Paper

Paper

Investigation of low temperature plasmas induced using laser-produced plasma EUV sources

A. Bartnik, W. Skrzeczanowski, J. Czwartos, J. Kostecki, P. Wachulak, T. Fok, H. Fiedorowicz

Proceedings Volume 10974, 1097411 (2018) https://doi.org/10.1117/12.2516144

KEYWORDS: Plasmas, Extreme ultraviolet, Fluorine, Ions, Gases, Nitrogen, Silicon, Oxygen

Read Abstract +

Proceedings Article | 4 December 2018 Paper

Paper

NEXAFS spectroscopy and spectromicroscopy with laser-produced plasma sources of soft x-ray radiation

P. Wachulak, M. Duda, A. Bartnik, A. Sarzyński, Ł. Węgrzyński, T. Fok, H. Fiedorowicz

Proceedings Volume 10974, 1097412 (2018) https://doi.org/10.1117/12.2518237

KEYWORDS: Plasma, Spectroscopy, X-rays, Absorption, Pulsed laser operation, Krypton, Laser energy, Synchrotrons, Carbon

Read Abstract +

Proceedings Article | 4 December 2018 Paper

Paper

Experimental devices for produce gas cluster and aerosol targets for laser matter experiments

Ł. Wegrzynski, A. Bartnik, T. Fok, P. Wachulak, K. Janulewicz, H. Fiedorowicz

Proceedings Volume 10974, 1097413 (2018) https://doi.org/10.1117/12.2518412

KEYWORDS: Aerosols, Electromagnetism, Ultrasonics, Liquids, Transducers, Laser scattering, Scattering, Gases, Mie scattering

Read Abstract +

Proceedings Article | 31 May 2017 Paper

Paper

Reflective optics for effective collection of x-ray and EUV radiation: use for creation of photoionized plasmas and detection of weak signals

A. Bartnik, W. Skrzeczanowski, P. Wachulak, I. Saber, H. Fiedorowicz, T. Fok, Ł. Węgrzyński

Proceedings Volume 10235, 102350D (2017) https://doi.org/10.1117/12.2269438

KEYWORDS: Spectrographs, Mirrors, EUV optics, Neon, Extreme ultraviolet, Plasmas, X-rays, Gases, Ions, Reflectivity, X-ray optics, Signal detection, Nd:YAG lasers

Read Abstract +

Proceedings Article | 17 May 2017 Presentation + Paper

Presentation + Paper

Soft x-ray imaging with incoherent sources

P. Wachulak, A. Torrisi, M. Ayele, A. Bartnik, J. Czwartos, Ł. Węgrzyński, T. Fok, T. Parkman, Š. Vondrová, J. Turnová, M. Odstrcil, H. Fiedorowicz

Proceedings Volume 10243, 102430O (2017) https://doi.org/10.1117/12.2265093

KEYWORDS: Extreme ultraviolet, Microscopy, Microscopes, X-ray imaging, X-rays, Nanotechnology, Image resolution, X-ray microscopy, Plasma, Photoresist materials, Optical filters, Silicon, Extreme ultraviolet lithography

Read Abstract +

Proceedings Article | 8 December 2016 Paper

Paper

Soft X-ray microscope with nanometer spatial resolution and its applications

P. Wachulak, A. Torrisi, A. Bartnik, L. Wegrzynski, T. Fok, Z. Patron, H. Fiedorowicz

Proceedings Volume 10159, 101590W (2016) https://doi.org/10.1117/12.2259877

KEYWORDS: X-rays, Microscopes, Spatial resolution, Nitrogen, Zone plates, Silicon, Visible radiation, Optical filters, Microscopy, Plasma

Read Abstract +

Proceedings Article | 8 December 2016 Paper

Paper

Low temperature plasmas created by photoionization of gases with intense radiation pulses from laser-produced plasma sources

A. Bartnik, T. Pisarczyk, P. Wachulak, T. Chodukowski, T. Fok, Ł. Węgrzyński, Z. Kalinowska, H. Fiedorowicz

Proceedings Volume 10159, 1015909 (2016) https://doi.org/10.1117/12.2258588

KEYWORDS: Plasmas, Neon, Extreme ultraviolet, Ions, Absorption, Laser systems engineering, Picosecond phenomena, Ionization, Chemical species, Photons

Read Abstract +

Proceedings Article | 12 May 2015 Paper

Paper

Photoionized plasmas in laboratory: a connection to astrophysics and planetary sciences

A. Bartnik, T. Pisarczyk, P. Wachulak, T. Chodukowski, T. Fok, Ł. Wegrzynski, Z. Kalinowska, H. Fiedorowicz, R. Jarocki, M. Szczurek, E. Krousky, M. Pfeifer, J. Skala, J. Ullschmied, J. Dostal, R. Dudzak, J. Hrebícek, T. Medrik, J. Cikhardt, B. Cikhardtova, D. Klir, K. Rezac, L. Pina

Proceedings Volume 9510, 95100P (2015) https://doi.org/10.1117/12.2182032

KEYWORDS: Plasmas, Neon, Laser systems engineering, Ions, Argon, Gases, Pulsed laser operation, Extreme ultraviolet, Picosecond phenomena, X-rays

Read Abstract +

Proceedings Article | 12 May 2015 Paper

Paper

A compact “water-window” microscope with 60-nm spatial resolution based on a double stream gas-puff target and Fresnel zone plate optics

Przemyslaw Wachulak, Alfio Torrisi, Muhammad Nawaz, Daniel Adjei, Andrzej Bartnik, Jerzy Kostecki, Łukasz Wegrzynski, Šárka Vondrová, Jana Turňová, Tomasz Fok, Alexandr Jančarek, Henryk Fiedorowicz

Proceedings Volume 9510, 95100M (2015) https://doi.org/10.1117/12.2181431

KEYWORDS: Microscopes, Spatial resolution, Nitrogen, Plasma, Zone plates, Signal to noise ratio, Visible radiation, Optical filters, Microscopy, Titanium

Read Abstract +

Proceedings Article | 12 May 2015 Paper

Paper

Laser plasma sources of soft x-rays and extreme ultraviolet (EUV) for application in science and technology

Andrzej Bartnik, Przemysław Wachulak, Roman Jarocki, Jerzy Kostecki, Mirosław Szczurek, Daniel Adjei, Inam Ul Ahad, Mesfin Ayele, Tomasz Fok, Anna Szczurek, Alfio Torrisi, Łukasz Węgrzyński, Henryk Fiedorowicz

Proceedings Volume 9510, 95100Q (2015) https://doi.org/10.1117/12.2182167

KEYWORDS: Extreme ultraviolet, Plasma, X-rays, Polymers, X-ray microscopy, X-ray imaging, X-ray sources, Mirrors, Microscopes, Microscopy

Read Abstract +

Proceedings Article | 5 December 2014 Paper

Paper

Laser-plasma SXR/EUV sources: adjustment of radiation parameters for specific applications

A. Bartnik, H. Fiedorowicz, T. Fok, R. Jarocki, J. Kostecki, A. Szczurek, M. Szczurek, P. Wachulak, Ł. Węgrzyński

Proceedings Volume 9441, 94410R (2014) https://doi.org/10.1117/12.2084793

KEYWORDS: Plasma, Extreme ultraviolet, Xenon, Mirrors, Laser systems engineering, Pulsed laser operation, Krypton, X-rays, Gold, Argon

Read Abstract +

Proceedings Article | 27 September 2013 Paper

Paper

Development and applications of x-ray lasers at PALS Centre

M. Kozlova, J. Nejdl, A. Klisnick, A. Le Marec, L. Meng, F. Tissandier, T. Fok, L. Wegrzynski, A. Bartnik, P. Wachulak, R. Jarocki, H. Fiedorowicz

Proceedings Volume 8849, 884904 (2013) https://doi.org/10.1117/12.2024526

KEYWORDS: X-ray lasers, Zinc, Laser systems engineering, Iodine, Plasma, Temporal coherence, Sapphire lasers, Amplifiers, Spatial coherence, Mirrors

Read Abstract +

Proceedings Article | 3 May 2013 Paper

Paper

EUV optics in photoionization experiments

Andrzej Bartnik, Przemysław Wachulak, Henryk Fiedorowicz, Tomasz Fok, Roman Jarocki, Jerzy Kostecki, Anna Szczurek, Mirosław Szczurek, Ladislav Pina, Libor Sveda

Proceedings Volume 8777, 87771H (2013) https://doi.org/10.1117/12.2018422

KEYWORDS: Extreme ultraviolet, Plasmas, Neon, Gases, Ions, Argon, Pulsed laser operation, Chemical species, EUV optics, Grazing incidence

Read Abstract +

Proceedings Article | 3 May 2013 Paper

Paper

Water-window microscopy using compact, laser-plasma source based on Ar/He double stream gas-puff target

Przemyslaw Wachulak, Marcin Skorupka, Andrzej Bartnik, Jerzy Kostecki, Roman Jarocki, Mirosław Szczurek, Lukasz Wegrzynski, Tomasz Fok, Henryk Fiedorowicz

Proceedings Volume 8777, 877719 (2013) https://doi.org/10.1117/12.2021154

KEYWORDS: Signal to noise ratio, Microscopy, Spatial resolution, Plasma, Argon, Optical filters, X-ray microscopy, Microscopes, Extreme ultraviolet, Objectives

Read Abstract +

Showing 5 of 25 publications

SIGN IN TO:

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Advertisement

Advertisement