Dr. Ona Balachninaite Profile

Dr. Ona Balachninaite

at Vilnius Univ

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Author

Publications (16)

Proceedings Article | 28 September 2023 Presentation + Paper

Non-destructive quality evaluation of periodically poled MgO:PPLN and Rb:PPKTP crystals based on parametric light generation

Jonas Banys, Jokūbas Pimpe, Ona Balachninaitė, Vygandas Jarutis, Julius Vengelis

Proceedings Volume 12665, 1266505 (2023) https://doi.org/10.1117/12.2676794

KEYWORDS: Optical parametric amplifiers, Energy conversion efficiency, Quality measurement, Crystals, Nondestructive evaluation, Nonlinear frequency conversion

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Proceedings Article | 8 June 2023 Presentation

Microlaser pumped subnanosecond optical parametric generator based on a fan-out type MgO:PPLN crystal

Jonas Banys, Simona Armalyte, Vygandas Jarutis, Ona Balachninaite, Julius Vengelis

Proceedings Volume PC12569, (2023) https://doi.org/10.1117/12.2665233

KEYWORDS: Crystals, Wavelength tuning, Optical design, Terahertz radiation, Spectroscopes, Q switching, Picosecond phenomena, Optical amplifiers, Nonlinear crystals, Nd:YAG lasers

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Proceedings Article | 30 May 2022 Presentation

Investigation of optical parametric generator pumped by subnanosecond passively Q-switched micro-laser pulses

Jonas Banys, Justina Savickytė, Ona Balachninaitė, Simona Armalytė, Viktorija Tamulienė, Vygandas Jarutis, Julius Vengelis

Proceedings Volume PC12143, PC121430V (2022) https://doi.org/10.1117/12.2620757

KEYWORDS: Crystals, Q switching, Picosecond phenomena, Tunable lasers, Temporal resolution, Fluorescence spectroscopy, Visible radiation, Spectroscopy, Numerical simulations, Near infrared

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Optical parametric light generation is a unique way to obtain continuously tunable laser radiation in a wide spectral region. Relatively inexpensive and compact subnanosecond (100 ps - 1 ns) optical parametric generators (OPG) with broad wavelength tunability are needed for a variety of applications that do not require the high temporal resolution supplied by expensive and sophisticated ultrashort (<10 ps) laser systems, but nanosecond (>1 ns) time resolution is not sufficient. Such applications are spectroscopy, laser-induced fluorescence, detection of chemical materials, nonlinear microscopy, biochemical research and differential absorption lidar to name a few. Development and the reduced cost of the passively Q-switched micro-laser manufacturing technologies permits them to be used as a high energy pump source for subnanosecond OPGs. Such micro-laser pumped subnanosecond OPGs would allow the implementation of low-cost, compact, continuously tunable laser radiation sources suitable for the aforementioned applications, especially in near-infrared (NIR) and visible (VIS) spectral ranges where the demand is high. To date, no subnanosecond OPGs based on short (up to 2 cm in length) periodically poled (PP) crystals have been demonstrated that could also be continuously tunable over a wide spectral range. Long PP crystals are more expensive, therefore implementation and investigation of such OPGs would be commercially attractive. Here we investigate parametric light generator based on short (up to 2 cm in length) periodically poled lithium niobate (PPLN) crystal pumped by 473 ps pulses from a 1 mJ energy micro-laser. Experimentally measured spatial, temporal and energy characteristics of the generated light from different length PPLN crystals are shown and supplemented by numerical simulations of parametric generation in a nonlinear dispersive medium. This work has received funding from European Regional Development Fund (project No. 01.2.2-LMT-K-718-03-0004) under grant agreement with the Research Council of Lithuania (LMTLT).

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 | 31 December 2009 Paper

Laser conditioning of high reflectivity mirrors used in OPOs by 266 and 355 nm nanosecond pulses

Andrius Melninkaitis, Arturas Vaninas, Julius Mirauskas, Kestutis Kuršelis, Ona Balachninaite, Valdas Sirutkaitis

Proceedings Volume 7504, 750408 (2009) https://doi.org/10.1117/12.836496

KEYWORDS: Mirrors, Optical parametric oscillators, Reflectivity, Laser induced damage, Laser damage threshold, Silica, Coating, Nonlinear crystals, Thin films, Electrons

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Proceedings Article | 2 December 2008 Paper

High repetition rate optical parametric oscillator based on a periodically poled lithium niobate crystal pumped by nanosecond Q-switched Nd:YVO[sub]4[/sub] laser

Lauryna Petravičiūtė, Ona Balachninaitė, Valdas Sirutkaitis

Proceedings Volume 7142, 71420G (2008) https://doi.org/10.1117/12.815644

KEYWORDS: Optical parametric oscillators, Output couplers, Reflectivity, Resonators, Mirrors, Crystals, Transparency, Lithium niobate, Laser crystals, Pulsed laser operation

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Proceedings Article | 25 January 2007 Paper

Optical characterization of the LiInS2 and LiInSe2 crystals

Ona Balachninaite, Lauryna Petraviciute, Mindaugas Maciulevicius, Valdas Sirutkaitis, Ludmila Isaenko, Sergei Lobanov, Alexander Yelisseyev, Jean-Jacques Zondy

Proceedings Volume 6596, 65961J (2007) https://doi.org/10.1117/12.726551

KEYWORDS: Crystals, Laser scattering, Scattering, Optical parametric oscillators, Nonlinear crystals, Absorption, Scatter measurement, Polarization, Laser crystals, Lithium

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Proceedings Article | 15 January 2007 Paper

Characterization of the mid-infrared nonlinear crystals LiInSe2 and LiInS2 in the IR range

Ona Balachninaite, Lauryna Petraviciute, Mindaugas Maciulevicius, Valdas Sirutkaitis, Ludmila Isaenko, Sergei Lobanov, Alexander Yelisseyev, Jean-Jacques Zondy

Proceedings Volume 6403, 64031Y (2007) https://doi.org/10.1117/12.696254

KEYWORDS: Crystals, Optical parametric oscillators, Nonlinear crystals, Laser scattering, Scattering, Absorption, Scatter measurement, Polarization, Lithium, Laser crystals

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Proceedings Article | 23 February 2006 Paper

Absorptance and scattering losses measurements in IR range by high average power tunable radiation of optical parametric oscillator based on a periodically poled lithium niobate

O. Balachninaite, R. Eckardt, M. Maciulevicius, M. Sinkevicius, V. Sirutkaitis

Proceedings Volume 6101, 61011K (2006) https://doi.org/10.1117/12.647429

KEYWORDS: Optical parametric oscillators, Crystals, Scattering, Laser scattering, Scatter measurement, Absorption, Mirrors, Lithium niobate, Nonlinear crystals, Laser crystals

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Proceedings Article | 23 February 2006 Paper

Automated test station for laser-induced damage threshold measurements according to ISO 11254-2 standard

A. Melninkaitis, D. Miksys, T. Balciunas, O. Balachninaite, T. Rakickas, R. Grigonis, V. Sirutkaitis

Proceedings Volume 6101, 61011J (2006) https://doi.org/10.1117/12.647427

KEYWORDS: Laser induced damage, Light scattering, Mirrors, Pulsed laser operation, Damage detection, Photodiodes, Standards development, Video, Laser scattering, Inspection

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Proceedings Article | 21 February 2005 Paper

A cherent spectrophotometer based on a periodically poled lithium niobate optical parametric oscillator for optical characterization

Ona Balachninaite, Robert Eckardt, Mindaugas Maciulevicius, Rimantas Grigonis, Valdas Sirutkaitis

Proceedings Volume 5647, (2005) https://doi.org/10.1117/12.584909

KEYWORDS: Optical parametric oscillators, Mirrors, Crystals, Reflection, Scattering, Spectrophotometry, Modulation, Reflectivity, Scatter measurement, Laser damage threshold

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Proceedings Article | 4 November 2003 Paper

Optical characterization in wide spectral range by a coherent spectrophotometer

Valdas Sirutkaitis, Robert Eckardt, Ona Balachninaite, Rimantas Grigonis, A. Melninkaitis, T. Rakickas

Proceedings Volume 5188, (2003) https://doi.org/10.1117/12.508642

KEYWORDS: Optical parametric oscillators, Spectrophotometry, Crystals, Reflectivity, Mirrors, Nonlinear crystals, Laser systems engineering, Laser induced damage, Laser scattering, Laser damage threshold

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Proceedings Article | 30 May 2003 Paper

Results of a round-robin experiment on reflectivity measurments at a wavelength of 1.06 micron

Detlef Nickel, Christoph Fleig, Andrea Erhard, Andreas Letsch, Adolf Giesen, Marco Jupe, Kai Starke, Detlev Ristau, Oswald Wilhelm, Rudolf Huber, Rainer Haspel, Uwe Schuhmann, Chris Scharfenorth, Hans Joachim Eichler, Stefan Gliech, Angela Duparre, Michael Schulz-Grosser, Anna Krasilnikova, Alexandra Haise, Wolfgang Riede, Ona Balachninaite, Rimantas Grigonis, Valdas Sirutkaitis, Vladimir Kazakevich

Proceedings Volume 4932, (2003) https://doi.org/10.1117/12.472005

KEYWORDS: Reflectivity, Laser optics, Laser induced damage, Digital video discs, Laser therapeutics, Transmittance, Laser components, Spectrophotometry, Dielectric mirrors

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Proceedings Article | 30 May 2003 Paper

A coherent spectrophotometer for optical coating characterization

Ona Balachninaite, Robert Eckardt, Rimantas Grigonis, M. Peckus, Valdas Sirutkaitis

Proceedings Volume 4932, (2003) https://doi.org/10.1117/12.472378

KEYWORDS: Optical parametric oscillators, Reflectivity, Crystals, Mirrors, Optical amplifiers, Laser damage threshold, Spectrophotometry, Reflection, Polarization, Nd:YAG lasers

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Proceedings Article | 24 July 2002 Paper

Absorptance measurement of nonlinear crystals by calorimetric method at 1064 and 532 nm

Ona Balachninaite, M. Barkauskas, Robert Eckardt, Rimantas Grigonis, M. Maciulevicius, A. Melninkaitis, Valdas Sirutkaitis

Proceedings Volume 4751, (2002) https://doi.org/10.1117/12.475923

KEYWORDS: Crystals, Nonlinear crystals, Absorption, Temperature metrology, Laser crystals, Polarization, Ferroelectric materials, Pulsed laser operation, Q switched lasers, Semiconductor lasers

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Proceedings Article | 24 July 2002 Paper

Periodically poled lithium-niobate optical parametric oscillator pumped by a diode-pumped Q-switched Nd:YAG laser

Valdas Sirutkaitis, Ona Balachninaite, A. Atamalian, Rimantas Grigonis, Robert Eckardt

Proceedings Volume 4751, (2002) https://doi.org/10.1117/12.475969

KEYWORDS: Optical parametric oscillators, Output couplers, Reflectivity, Crystals, Mirrors, Q switched lasers, Nd:YAG lasers, Reflection, Pulsed laser operation, Lithium niobate

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Showing 5 of 16 publications

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