Habil. dr. Juozas Vidmantis Vaitkus

Habil. dr. prof. Juozas Vidmantis Vaitkus

Phone: +370 686 14 893

E-mail: 

Institute of Photonics and Nanotechnology (IPN)

Semiconductor Physics and Material Science

Professor Emeritus

Photonics, radiation detectors, semiconductors

ORCID ID 0000-0002-8411-0500 https://orcid.org/0000-0002-8411-0500

https://www.researchgate.net/profile/Juozas-Vaitkus

Sellin, PJ, Vaitkus, J New materials for radiation hard semiconductor detectors. Nuclear Instruments and Methods in Physics Research Section A: A 557 (2): 479-489 2006.

G.Aad et al (ATLAS collaboration) (CMS Collaboration). Combined Measurement of the Higgs Boson Mass in pp Collisions at s = 7 and 8 TeV with the ATLAS and CMS Experiments. PRL 114, 191803 (2015) . R.Baltramiejūnas, V.Gavriušin, K.Jarašiūnas, J.Vaitkus, D.Veleckas. “Measureable two-photon absorption coefficient dependence on experiment conditions and properties of semiconductor in laser cavity “, IEEE J.Quant. Electronics, 1974, v. QE-10, No 9, p.699-700.

L.Subačius, K.Jarašiūnas, J.Vaitkus. “Light-induced high frequency current oscillations in millimeter waverange”, Soviet physics collection, 1985, v. 15, No 4

J.Vaitkus, K.Jarašiūnas. “Properties of light-induced phase gratings in semiconductors at one- or two-photon excitation”, Liet. fiz. rinkinys, 1975, v. 15, No 2, p.265-269.

J.Vaitkus. “The nonequilibrium Hall effect and related transport phenomena in semiconductors under inhomogeneous excitation by a laser pulse”, phys.stat.sol.(a), 1976, v. 34, p.769-775.

Laimonas Deveikis, Juozas Vidmantis Vaitkus, Tomas Čeponis, Mindaugas Gaspariūnas, Vitalij Kovalevskij, Vytautas Rumbauskas, and Eugenijus Gaubas. Profiling of proton beams by fluence scanners. Lith. J. Phys. 61, 75–83 (2021)

R. Aleksiejūnas, M. Sūdžius T. Malinauskas, J. Vaitkus, K. Jarašiūnas, S. Sakai. Determination of free carrier bipolar diffusion coefficient and surface recombination velocity of undoped GaN Applied physics letters, 2003, vol. 83, no. 6, p. 1157-1159

Gaubas E, Kazlauskas K, Tomasiunas R, Vaitkus J, Zukauskas A Radiation-defect-dependent photoconductivity transients and photoluminescence in semi-insulating GaN, APPLIED PHYSICS LETTERS 84 (25): 5258-5260 (2004)

J.V Vaitkus, M. Moll, V. Kažukauskas, and V. Vertelis, “Increase of the photoconductivity quantum yield in silicon irradiated by neutrons to extremely high fluences”, Journal of Physics D: Applied Physics, Vol. 55, p. 395104 (1-8), 2022 (2022 07 07, DOI: https://doi.org/10.1088/1361-6463/ac7f65

EU-FP7 AIDA project contribution 2011-2015 Vilnius University Team leader

EU HORIZON AIDA 2020 project 2015 - 2020 Vilnius University Team leader

ESF project  Radiation nanoclusters in Si and GaN 2013-2015 project leader. 

Also was a project leader of many projects funded by Lithuanian Studies and Science Fund, Lithuanian Science Council and Lithuanian Academy of Science that was related to CERN RD50 collaboration.

Invited or plenary lectures during recent years:
European Material Research Conference E-MRS IUMRS ICEM (2000), IWORID Conference in Sardinia (2001), 12th International Symposium on Ultrafast Phenomena in Semiconductors (12-UFPS) in Vilnius (2004), International Conference "Advanced Optical Materials and Devices" (AOMD-5) in Vilnius (2006), 17th & 21 Congress ISLSM, 22th-29th IALMS Internat. Laser Medicine (Laser Florence 2007), 9th International Conference on Global Research and Education. (Riga, 2010), International conference Radiation interaction with material and its use in technologies (Kaunas, 2010, 12, 14), 13th & 14th Asian Pacific Association of laser Medicine and Surgery (2010, 2012), ICLA 2011 Cairo, IWORID 2013, Paris, World Laserology Congress (2013), World Spectroscopy Congress, Stockholm, 2019, The World Laser Medicine Congress (WLMC 2019), Taipei and at different International. Seminars, National Conferences.

Supervisor of 31 doctoral student

As now I am professor emeritus I stopped this activity since 2020

As now I am professor emeritus I stopped this activity since 2020

Participation in the national/international governing bodies, commissions, committees, boards etc.

As now I am professor emeritus I stopped this activity since 2020

Expert in National Standard Committee in the field of Nanotechnology.

National Awards for Scientific Achieve in Physics:

1981 - together with A.Sakalas for investigation of defects contribution to semiconductors optical and photoelectrical properties (1965 -1980)

1996 - together with K.Jarašiūnas, G.Juška, L.Subačius for investigation of Carriers dynamics in semiconductors excited by light (1985–1995 m.)

2005 - together with Eugenijus Gaubas, Vaidotas Kažukauskas, Juras Požela, Karolis Požela, Aldis Šilėnas for investigation of  Semiconductor devices for radiation hard application (1997–2004 m.)

2021 together with Tomas Čeponis and Eugenijus Gaubas for investigation of semiconductors irradiated to extreme fluences and their application for radiation dosimetry and for the design of other radiation technologies (2006–2020)“

Order of the Lithuanian Grand Duke Gediminas Officer's Cross 2002
Order of the Lithuanian Grand Duke Gediminas Commander's Cross 2021

1988 - USSR State Award for Novel Engineering together with engineers from Kiev and Moscow

1988 - Award for Scientific Achieve in Microelectronics of Lithuanian Council of Ministers together with representatives of company "Venta"

2002 - Lithuanian Academy of Sciences Award: P.Brazdziunas prize (experimental physics)

As now I am professor emeritus I stopped this activity since 2020.