Habil. dr. Virgilijus Vaičaitis

Habil. dr. Virgilijus Vaičaitis

Phone: +370 683 76 827

E-mail: virgilijus.vaicaitis@ff.vu.lt

Laser Research Center (LRC)

Laser physics and nonlinear optics

Chief researcher

Ultrashort laser pulses, nonlinear optical phenomena, terahertz radiation generation and detection, laser-created air plasma.

• https://www.webofscience.com/wos/author/record/AAB-7754-2022
• https://www.researchgate.net/profile/Virgilijus-Vaicaitis
• https://orcid.org/0000-0002-9084-8552

1. Babushkin, I., Galán, Á.J., de Andrade, J.R.C., Husakou A., Morales F., Kretschmar M., Nagy T., Vaičaitis V., et al. All-optical attoclock for imaging tunnelling wavepackets. Nat. Phys. 18, 417–422 (2022).
2. D. Buožius, G. Balčas, V. Tamulienė, I. Babushkin, U. Morgner, V. Vaičaitis, Terahertz and far infrared radiation generation in air plasma created by bichromatic subpicosecond laser pulses, Appl. Phys. Lett. 124, 071113 (2024).
3. V. Vaičaitis, O. Balachninaitė, A. Matijošius, I. Babushkin, and U. Morgner, Direct time-resolved plasma characterization with broadband terahertz light pulses, Phys. Rev. E 107, 015201 (2023).
4. C. Tailliez, A. Stathopulos, S. Skupin, D. Buožius, I. Babushkin, V. Vaičaitis and L. Berge, Terahertz pulse generation by two-color laser fields with circular polarization, New J. Phys. V. 22, Article number: 103038 (2020).
5. M. Ivanov, I. Thiele, L. Bergé, S. Skupin, D. Buožius, and V. Vaičaitis, Intensity modulated terahertz vortex wave generation in air plasma by two-color femtosecond laser pulses, Optics. Lett. V. 44 (15), 3889-3892 (2019).
6. C. S. Ponseca, Jr., A. Arlauskas, H. Yu, F. Wang, I. Nevinskas, E. Dūda, V. Vaičaitis, et al, Pulsed terahertz emission from solution-processed lead iodide perovskite films, ACS Photonics, 6(5), 1175−1181 (2019).
7. V. Vaičaitis, V. Jarutis, D. Pentaris. Conical Third-Harmonic Generation in Normally Dispersive Media, Phys. Rev. Lett., 103 (10) Art. No. 103901 (2009).

• 2019-2022 Researcher groups project funded by the Lithuanian Research Council S-MIP-19-46 “Development of new characterization methods of the plasma induced by femtosecond laser pulses”. Role: Head of the project.
• 2015-2019 Project "Integrated European Laser Laboratories IV (LASERLAB‐Europe IV, 7th Framework EU Programme). Role: head of Vilnius university part of Joint Research Activities (JRA) " Innovative Laser Technologies“ (ILAT).
• 2012-2015 Project "Integrated European Laser Laboratories III (LASERLAB‐Europe III, 7th Framework EU Programme). Role: head of Vilnius university part of Joint Research Activities (JRA) "Innovative radiation sources at the extremes“ (INREX).
• 2012-2015 Project „LaMeTech Science“, funded by the European Social Fund Agency. Role: representative of the Department of Quantum Electronics of Vilnius university.
• 2007-2009 Project “TERASPEK”, funded by the Lithuanian State Science And Study Foundation. Role: head of Vilnius university part.
• 2005-2006 Project “Four-photon parametric generation of frequency tunable light pulses in resonantly excited media”, funded by the Lithuanian State Science and Studies Foundation. Role: head of the project.
• 2004‐2007 NATO‐sponsored project between Vilnius, Rochester and Maryland universities (PST.CLG.980.299, “Four‐wave parametric light generation of tunable light pulses in resonantly excited gases”. Role: head of Vilnius university part.

• Virgilijus Vaičaitis, “Mid-infrared radiation generation in air and its application for plasma characterization”, invited presentation in “The Extreme Light Infrastructure User Meeting, 26-27 June 2024, ELI Beamlines Facility in Dolní Břežany, Czech Republic.
  Virgilijus Vaičaitis, “Generation of broadband terahertz radiation in laser-created air
  plasma and its applications”, invited presentation in “2nd International Congress and Expo on Optics, Photonics and Lasers” (EUROPL2024), June 13-14, 2024, Nice, France. https://signatureconferences.com/europl2024/
• V. Vaičaitis, Ž. Svirskas, D. Buožius, M. Ivanov, U. Morgner, I. Babushkin, „Modification of terahertz radiation generation by laser-preformed air plasma“ XIX International Conference “Foundations & Advances in Nonlinear Science” and International Symposium “Advances in Nonlinear Photonics”, September, 24 – 27 September, Minsk, 2018.
• V. Vaičaitis, V. Pyragaitė, O. Khasanov, E. Gaižauskas, “Terahertz Radiation Generation by Femtosecond Laser Pulses in Air”, XVII International Conference “Foundations & Advances in Nonlinear Science” and International Symposium “Advances in Nonlinear Photonics”, September, 29 - October, 3, Minsk, 2014.
• V. Vaičaitis, K. Steponkevičius, E.Gaižauskas, Quintic optical nonlinearities in gaseous media. International Workshop "Nonlinear Photonics: Theory, Materials, Applications"., June 29 - July 2, 2015, Saint Petersburg, Russia. Program and abstracts, p. 42(27).
  Virgilijus Vaičaitis and Vygandas Jarutis, „Nonlinear optical processes in alkali metal vapours“, invited presentation in Conference „Advances in Atomic and Molecular Physics“, Latvia, Ratnieki, June 16 - 18, 2008.

• Kęstutis Steponkevičius, thesis “Third harmonic generation and six-wave mixing of femtosecond laser pulses in air”, successfully defended on 2016-09-23.

• Danas Buožius, tentative thesis “THz radiation generation in air”, currently in preparation.

Have been a supervisor of over 15 master degree and bachelor students’ final diploma works, reviewed about 20 master degree and bachelor students’ final diploma works.

• Reviever of journals "Optics letters", "Optics express", "Applied optics", "Optics communications", "Lithuanian journal of physics";
• Expert of Agency for Science, Innovation and Technology (Lithuania), of Lithuanian Business Support Agency (Lithuania) and of Department of Research and Development of the Ministry of Education, Youth and Sports of Czech republic;
• Member of several doctoral dissertation committees.

• Publication on a website 15min.lt: V. Vaičaitis and A. Matijošius. "850 mln. eurų itin galingiems lazeriams: kam reikalinga ekstremalios šviesos infrastruktūra Europoje?" (€850 million for ultra-high-power lasers: why do we need extreme light infrastructure in Europe?). 2023.
• Publication on a website delfi.lt: "Lietuvio mokslininko pasiekimas sulaukė tarptautinio įvertinimo: naujos technologijos palengvins ultrasparčiųjų reiškinių tyrimus“ (Achievements of lithuanian scientist received an international recognition: the new technologies will ease investigations of the ultrafast processes). 2022. 
• Publication on a website delfi.lt: Virgilijus Vaičaitis. Mokslininkas paaiškino, kaip vandens lašas susijęs su lazerių fizika (Scientist explained how a drop of water relates to laser physics). 2016. 
• Publication in Vilnius University journal Spectrum: "Nuo vandens lašo iki šiuolaikinės lazerių fizikos" (From a drop of water to modern laser physics), 1(24)/2016, pp. 28-31. 
• Publication on a website lzinios.lt: Virgilijus Vaičaitis. "Dėl mokslinių tyrimų Lietuvoje: gal verta eiti itin radikaliu keliu" (Regarding research in Lithuania: maybe it is worth following a very radical path). Lietuvos žinios 2014.