Mr. Jonas Banys Profile

Jonas Banys

at Vilnius Univ

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Publications (5)

Proceedings Article | 5 October 2023 Presentation + Paper

High repetition rate supercontinuum generation in undoped KGW and YVO4 crystals

Vaida Marčiulionytė, Jonas Banys, Julius Vengelis, Robertas Grigutis, Gintaras Tamošauskas, Audrius Dubietis

Proceedings Volume 12681, 1268103 (2023) https://doi.org/10.1117/12.2676793

KEYWORDS: Crystals, Supercontinuum generation, Femtosecond phenomena

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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).

SPIE Journal Paper | 11 March 2020

Investigation of piezoelectric ringing effects in deuterated potassium dihydrogen phosphate crystals

Giedrius Sinkevicius, Julius Vengelis, Jonas Banys, Laimonas Masiulis, Rimantas Grigonis, Algirdas Baskys, Valdas Sirutkaitis, Justinas Domarkas

OE, Vol. 59, Issue 03, 036107, (March 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.3.036107

KEYWORDS: Crystals, Potassium, Piezoelectric effects, Laser crystals, Photodiodes, Optical engineering, Acoustics, Pulsed laser operation, Oscilloscopes, Refractive index

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