Dr. Domas Paipulas Profile

Dr. Domas Paipulas

Associate Professor at Vilnius Univ

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Author

Publications (24)

Proceedings Article | 13 March 2024 Presentation + Paper

3D laser printed form birefringent phase retarders for visible wavelengths

Darius Gailevicius, Domas Paipulas, Saulius Juodkazis, Vygantas Mizeikis

Proceedings Volume 12898, 1289807 (2024) https://doi.org/10.1117/12.3002012

KEYWORDS: 3D printing, Birefringence, Photoresist materials, Wave plates, Polarization, Photonic crystals, Optical gratings

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Proceedings Article | 15 March 2023 Presentation + Paper

Tailoring optical birefringence of polymers using 3D femtosecond laser structuring

Vygantas Mizeikis, Darius Gailevičius, Domas Paipulas, Kestutis Staliunas

Proceedings Volume 12433, 1243305 (2023) https://doi.org/10.1117/12.2649678

KEYWORDS: 3D printing, Birefringence, Polymers, Photoresist materials, Photonic crystals, Femtosecond phenomena, Polarization, Fabrication

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Proceedings Article | 25 May 2022 Paper

Integration of Mach-Zehnder interferometer on optical fiber using UV femtosecond laser pulses

Kamilė Kasačiūnaitė, Simas Butkus, Domas Paipulas

Proceedings Volume 12142, 121421B (2022) https://doi.org/10.1117/12.2621949

KEYWORDS: Optical fibers, Femtosecond phenomena, Ultraviolet radiation, Surface roughness, Mach-Zehnder interferometers, Laser ablation, Interferometers

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Proceedings Article | 25 May 2022 Paper

Surface roughness optimization during femtosecond UV laser ablation

Dominyka Stonyte, Vytautas Jukna, Simas Butkus, Domas Paipulas

Proceedings Volume 12142, 1214216 (2022) https://doi.org/10.1117/12.2621036

KEYWORDS: Laser ablation, Ultraviolet radiation, Surface roughness, Femtosecond phenomena, Sapphire, Glasses, Pulsed laser operation, Absorption, Microfabrication, 3D microstructuring, Femtosecond laser micromachining

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Proceedings Article | 25 May 2022 Poster + Paper

Numerical simulations and experimental analysis of scanning techniques for low-roughness surfaces using UV femtosecond pulses

Evaldas Kažukauskas, Simas Butkus, Vytautas Jukna, Domas Paipulas, Valdas Sirutkaitis

Proceedings Volume 12142, 1214219 (2022) https://doi.org/10.1117/12.2621763

KEYWORDS: Surface roughness, Femtosecond phenomena, Ultraviolet radiation, Laser ablation, Numerical simulations, Data modeling, Micromachining

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Proceedings Article | 24 May 2022 Presentation

Formation and investigation of highly-regular laser induced periodic surface structures on metals using IR and UV femtosecond lasers

Tauras Bukelis, Ona Balachninaite, Simas Butkus, Domas Paipulas

Proceedings Volume PC12131, PC121310T (2022) https://doi.org/10.1117/12.2621346

KEYWORDS: Metals, Ultraviolet radiation, Femtosecond phenomena, Scanning electron microscopy, Polarization, Visualization, Titanium, Surface finishing, Pulsed laser operation, Polishing

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Material surfaces irradiated with laser radiation under specific conditions can lead to laser-induced periodic surface structure (LIPSS) formation. The formation of these surface structures is a robust one-step method that allows for high throughput and cheap surface nano-structuring with spatial periods that can be greatly lower than the irradiating laser wavelength. Typically, a structural size ranges from several micrometers down to less than 100 nm and the structures strongly correlate with the polarization direction of the light used for their formation. The regularity of LIPSS formation depends on various laser and material parameters. Some metals can exhibit highly regular LIPSS (HR-LIPSS) when the correct conditions are met. One of the main drawbacks of precise LIPSS texturization is the difficulty in controlling the ripple quality. Thus, understanding the processes which lead to HR-LIPSS formation is one step in making laser-based material texturization more prevalent. The aim of this research was to create highly regular surface structures and investigate how the ripple formation depends on various laser and material properties. The experiment was carried out using femtosecond laser systems. Different laser harmonics modules were used for the LIPSS formation to cover both the IR and UV wavelengths. Structures were formed on various steel, copper, aluminum, and titanium samples employing different laser wavelengths, pulse energies, pulse overlaps, and polarizations. The resulting surface structures were then examined both visually and with the help of a scanning electron microscope (SEM). LIPSS images taken by SEM were then digitally processed to calculate the distribution of LIPSS orientation angle (DLOA) which characterizes the regularity of the surface structures. We show that by using ultraviolet femtosecond laser sources, choosing the right pulse energy, pulse overlap values, and sufficiently sharp focusing lens, HR-LIPSS can be formed on metals for which highly regular ripples don’t form using infrared laser radiation.

Proceedings Article | 10 March 2020 Presentation

Reversible deformations in laser-written polymeric microstructures: New platform for sensing and micro-actuation applications (Conference Presentation)

Domas Paipulas, Sima Rekštytė, Titas Tičkūnas, Mangirdas Malinauskas, Vygantas Mizeikis

Proceedings Volume 11292, 112920U (2020) https://doi.org/10.1117/12.2544260

KEYWORDS: Polymers, Laser applications, Liquids, Chemical fiber sensors, Microfluidics, Multiphoton lithography, 3D microstructuring, Nanolithography, Nanotechnology, Bioalcohols

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Proceedings Article | 4 March 2019 Paper

Rapid delamination of GaN coatings with femtosecond laser lift-off technique

Domas Paipulas, Simas Butkus, Valdas Sirutkaitis

Proceedings Volume 10906, 109060H (2019) https://doi.org/10.1117/12.2507196

KEYWORDS: Gallium nitride, Femtosecond phenomena, Laser processing, Sapphire, Gallium, Surface roughness, Laser liftoff

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Proceedings Article | 22 May 2018 Presentation + Paper

Hybrid laser 3D microprocessing in glass/polymer micromechanical sensor: towards chemical sensing applications

Titas Tičkūnas, Mangirdas Malinauskas, Roaldas Gadonas, Yves Bellouard, Domas Paipulas

Proceedings Volume 10675, 106750C (2018) https://doi.org/10.1117/12.2307533

KEYWORDS: Polymers, Glasses, Silica, Sensors, Additive manufacturing, Femtosecond phenomena, Laser applications, Fabrication, Biological and chemical sensing, Laser processing

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Proceedings Article | 19 February 2018 Paper

Solvent induced reversible deformations of polymeric 3D microstructures for actuation and sensing applications

Sima Rekštytė, Domas Paipulas, Mangirdas Malinauskas, Vygantas Mizeikis

Proceedings Volume 10520, 105200E (2018) https://doi.org/10.1117/12.2288792

KEYWORDS: Polymers, 3D microstructuring, Liquids, Sensors, 3D surface sensing, Diffraction, Smart materials, Femtosecond phenomena, Actuators

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Proceedings Article | 20 February 2017 Presentation + Paper

Laser subtractive-additive-welding microfabrication for Lab-On-Chip (LOC) applications

Linas Jonušauskas, Sima Rekštytė, Ričardas Buivydas, Simas Butkus, Domas Paipulas, Roaldas Gadonas, Saulius Juodkazis, Mangirdas Malinauskas

Proceedings Volume 10115, 101150V (2017) https://doi.org/10.1117/12.2249828

KEYWORDS: Lithography, Rapid manufacturing, Ultrafast lasers, Polymers, Polarization, Micro optics, Nanophotonics, Ionization, Tissue engineering, Multiphoton processes, Glasses, Lab on a chip, Microfluidics, Particles, 3D printing, Additive manufacturing, Femtosecond phenomena, Microfabrication, Manufacturing, Optical filters

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Proceedings Article | 13 March 2015 Paper

Volumetric integration of photorefractive micromodifications in lithium niobate with femtosecond laser pulses

D. Paipulas, V. Mizeikis, V. Purlys, A. Čerkauskaitė, S. Juodkazis

Proceedings Volume 9374, 93740B (2015) https://doi.org/10.1117/12.2078484

KEYWORDS: Refractive index, Femtosecond phenomena, Lithium niobate, Crystals, Niobium, Pulsed laser operation, Photonic devices, Geometrical optics, Photonics, Current controlled current source

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Proceedings Article | 1 May 2014 Paper

Multiscale 3D manufacturing: combining thermal extrusion printing with additive and subtractive direct laser writing

Mangirdas Malinauskas, Laurynas Lukoševičius, Dovilė Mackevičiūtė, Evaldas Balčiūnas, Sima Rekštytė, Domas Paipulas

Proceedings Volume 9135, 91350T (2014) https://doi.org/10.1117/12.2051520

KEYWORDS: 3D printing, Additive manufacturing, Tissues, 3D microstructuring, Printing, 3D modeling, Multiphoton lithography, Fabrication, Tissue engineering, Composites

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Proceedings Article | 1 May 2014 Paper

Microfabrication of transparent materials using filamented femtosecond laser beams

S. Butkus, D. Paipulas, Eugenijus Gaižauskas, D. Kaškelytė, V. Sirutkaitis

Proceedings Volume 9135, 91351E (2014) https://doi.org/10.1117/12.2051160

KEYWORDS: Glasses, Femtosecond phenomena, Microfabrication, Laser cutting, Laser drilling, Laser ablation, Pulsed laser operation, Sapphire, Soda-lime glass, Scanners

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Proceedings Article | 7 March 2014 Paper

Combination of thermal extrusion printing and ultrafast laser fabrication for the manufacturing of 3D composite scaffolds

Evaldas Balčiūnas, Laurynas Lukoševičius, Dovilė Mackevičiūtė, Sima Rekštytė, Vygandas Rutkūnas, Domas Paipulas, Karolina Stankevičiūtė, Daiva Baltriukienė, Virginija Bukelskienė, Algis Piskarskas, Mangirdas Malinauskas

Proceedings Volume 8972, 89721N (2014) https://doi.org/10.1117/12.2040584

KEYWORDS: Composites, 3D printing, Fabrication, Tissue engineering, 3D modeling, Polymers, Printing, Manufacturing, Laser processing, Ultrafast lasers

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Proceedings Article | 7 March 2014 Paper

Rapid microfabrication of transparent materials using a filamented beam of the IR femtosecond laser

S. Butkus, D. Paipulas, Ž. Viburys, A. Alesenkov, E. Gaižauskas, D. Kaškelytė, M. Barkauskas, V. Sirutkaitis

Proceedings Volume 8972, 897216 (2014) https://doi.org/10.1117/12.2038231

KEYWORDS: Glasses, Femtosecond phenomena, Pulsed laser operation, Microfabrication, Laser cutting, Laser ablation, Laser drilling, Laser welding, Soda-lime glass, Scanners

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Proceedings Article | 6 September 2013 Paper

Characterization of the optical components fabricated by femtosecond pulses in transparent materials

Lina Mazule, Simona Liukaityte, Vytautas Sabonis, Titas Gertus, Mindaugas Mikutis, Domas Paipulas, Tomas Puodziunas, Valdas Sirutkaitis

Proceedings Volume 8839, 883909 (2013) https://doi.org/10.1117/12.2022823

KEYWORDS: Scattering, Laser scattering, Light scattering, Polarization, Solar cells, Femtosecond phenomena, Optical components, Glasses, Transmittance, Titanium dioxide

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Proceedings Article | 9 July 2013 Paper

Volumetric modifications in fused silica using Gaussian and Bessel femtosecond laser beams

Domas Paipulas, Mindaugas Mikutis, Valdas Sirutkaitis, Saulius Juodkazis

Proceedings Volume 8786, 87860D (2013) https://doi.org/10.1117/12.2020258

KEYWORDS: Silica, Femtosecond phenomena, Gaussian beams, Fiber Bragg gratings, Pulsed laser operation, Refractive index, Axicons, Multiphoton lithography, Photonic devices, Birefringence

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Proceedings Article | 5 March 2013 Paper

Reversible microstructuring of lithium niobate by direct laser write technique

Vygantas Mizeikis, Domas Paipulas, Vytautas Purlys, Ričardas Buividas, Saulius Juodkazis

Proceedings Volume 8613, 86130I (2013) https://doi.org/10.1117/12.2003607

KEYWORDS: Refractive index, Lithium niobate, Crystals, Modulation, Diffraction gratings, Diffraction, Laser crystals, Diffractive optical elements, Absorption, Femtosecond phenomena

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Proceedings Article | 8 February 2012 Paper

Thermal and optical properties of sol-gel and SU-8 resists

Toshiyuki Suzuki, Junko Morikawa, Toshimasa Hashimoto, Ričardas Buividas, Gediminas Gervinskas, Domas Paipulas, Mangirdas Malinauskas, Vygantas Mizeikis, Saulius Juodkazis

Proceedings Volume 8249, 82490K (2012) https://doi.org/10.1117/12.907028

KEYWORDS: Raman spectroscopy, Polymerization, Raman scattering, Sol-gels, Polymers, Bismuth, Annealing, Calorimetry, Absorption, Temperature metrology

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Proceedings Article | 24 December 2011 Paper

Tailoring of photonic structures by femtosecond laser lithography

Vygantas Mizeikis, Vytautas Purlys, Domas Paipulas, Lina Maigyte, Kestutis Staliunas

Proceedings Volume 8204, 820417 (2011) https://doi.org/10.1117/12.903232

KEYWORDS: Collimation, Refractive index, Diffraction, Collimators, Femtosecond phenomena, Fabrication, Photoresist materials, Lithography, Photonic crystals, Dielectrics

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Proceedings Article | 17 May 2010 Paper

Laser two-photon polymerization micro- and nanostructuring over a large area on various substrates

M. Malinauskas, V. Purlys, A. Žukauskas, G. Bickauskaite, T. Gertus, P. Danilevicius, D. Paipulas, M. Rutkauskas, H. Gilbergs, D. Baltriukiene, L. Bukelskis, R. Širmenis, V. Bukelskiene, R. Gadonas, V. Sirvydis, A. Piskarskas

Proceedings Volume 7715, 77151F (2010) https://doi.org/10.1117/12.854507

KEYWORDS: Polymers, 3D modeling, Stem cells, Tissues, Computer aided design, Photopolymers, Nanolithography, Two photon polymerization, Microfluidics, Femtosecond phenomena

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A tightly focused ultrafast pulsed laser beam is guided into the volume of the photosensitive material and induces nonlinear photomodification. By translating the sample, the position of the focus is changed relatively, thus point-by-point complex 3D structures can be written inside the bulk. In this report, we present a Laser Two-Photon Polymerization (LTPP) setup for three-dimensional micro/nanostructuring for applications in photonics, microoptics, micromechanics, microfluidics and biomedicine. This system enables fabrication of functional devices over a large area (up to several cm in lateral size) with reproducible sub-micrometer resolution (up to 200 nm). In our experiments a Yb:KGW active media laser oscillator (75 fs, 200 kW, 515 nm frequency doubled, 80 MHz) was used as an irradiation source. The sample was mounted on XYZ wide range linear motor driven positioning stages having 10 nm positioning resolution. These stages enable an overall travelling range of 100 mm into X and Y directions and 50 mm in Z direction and support a linear scanning speed of up to 300 mm/s. Control of all the equipment was automated via custom made computer software "3D-Poli" specially designed for LTPP applications. The model of the structure can be imported as CAD file, this enables rapid and flexible structuring out of various photopolymers like ORMOCERs, ORMOSILs, acrylates and PEGDAs which are commonly used in conventional UV mask, nanoimprint and μ-stereolithographies. In this paper, we demonstrate polymeric microstructures fabricated over a large area on glass, plastic and metal substrates. This opens a way to produce functional devices like photonic crystals, microlenses, micromechanic and microfluidic components and artificial scaffolds as templates for cell growth. Additionally, results of primary myogenic stem cells expanding on microfabricated polymeric scaffolds are provided. Cell proliferation tests show the material and structure to be biocompatible for the biomedical practice.

Proceedings Article | 13 May 2010 Paper

Femtosecond laser fabrication of hybrid micro-optical elements and their integration on the fiber tip

Mangirdas Malinauskas, Holger Gilbergs, Albertas Zukauskas, Kastytis Belazaras, Vytautas Purlys, Marius Rutkauskas, Gabija Bickauskaite, Andrej Momot, Domas Paipulas, Roaldas Gadonas, Saulius Juodkazis, Algis Piskarskas

Proceedings Volume 7716, 77160A (2010) https://doi.org/10.1117/12.854396

KEYWORDS: Polymers, Glasses, Optical components, Polymerization, Refractive index, Lenses, Femtosecond phenomena, Photorefractive polymers, Solids, Optical fibers

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Proceedings Article | 25 January 2007 Paper

Group-delay dispersion measurements of laser mirrors using white-light interferometry

Domas Paipulas, Rimantas Grigonis, Vaidotas Staliulionis, Valdas Sirutkaitis

Proceedings Volume 6596, 659614 (2007) https://doi.org/10.1117/12.726490

KEYWORDS: Mirrors, Dispersion, Interferometry, Optical filters, Laser interferometry, Gold, Analytical research, Optical interferometry, Interferometers, Light sources

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Showing 5 of 24 publications

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