Ultrafast spectroscopy group
Head of scientific group:
Assoc. Prof., Dr. Mikas Vengris
Description:
We research extremely fast processes taking place in molecules, crystals and nanoparticles after the absorption of light quantum. These processes include carrier dynamics in semiconductors, ultrafast events in organic dyes and primary processes in light-sensitive biological materials (e.g. photoactive proteins, their pigments and photosynthetic pigment-protein complexes). Additional area of research is corneal sculpting by femtosecond UV laser pulses.
There’s not so many of us, but we are ultrafast!
Staff:
Assoc. Prof., Dr. Mikas Vengris
Dr. Martynas Barkauskas
PhD. St. Eglė Gabrytė
M1 stud. Lukas Ivanauskas
Research activities:
Femtosecond multi-pulse transient absorption spectrometry
Two-photon/confocal fluorescence microscopy with picosecond time resolution
Projects of the group:
LASERLAB-EUROPE II
Devices:
Femtosecond multi-pulse transient absorption spectrometer
Femtosecond multi-pulse transient absorption spectrometer
File
Responsible person: Mikas Vengris
Two-photon/confocal fluorescence microscope with picosecond time resolution 
Two-photon/confocal fluorescence microscope with picosecond time resolution
Responsible person: Mikas Vengris
Publications:
Barkauskas M., Martynaitis V., Šačkus A., Rotomskis R., Sirutkaitis V., Vengris M., Ultrafast dynamics of photochromic compound based on oxazine ring opening // Lithuanian Journal Of Physics 2008, Vol. 48, No. 3, p. 231-242.
Valančiūnaitė J., Poderys V., Augulis R., Barkauskas M., Vengris M., Bagdonas S., Šoninių grupių įtaka porfirinų (TPPSn) nanoagregatų struktūrai // 37-oji Lietuvos Nacionalinė Fizikos konferencija 2007, birželio 11-13 d., Vilnius, S2-16, p.113.
Fotobiologija : vadovėlis aukštųjų mokyklų studentams / Saulius Bagdonas, Ričardas Rotomskis, Mikas Vengris. - Vilnius : VU leidykla, 2007. - 246 p. - ISBN 978-9955-3-061-5
Vengris M., Larsen S.D., Papagiannakis E., Kenkis M.T.J., van Grondelle R., Daugiaimpulsinė skirtuminės sugertiems spektroskopija: efektyvus biologinių sistemų tyrimo metodas // 37-oji Lietuvos Nacionalinė Fizikos konferencija 2007, birželio 11-13 d., Vilnius, 5-3, p.17
Sherliker B., Halsall M., Kasalynas I., Seliuta D., Valusis G., Vengris M., Barkauskas M., Sirutkaitis V., Harrison P., Jovanovic D.V., Indjin D., Ikonic Z., Parbrook P.J., Wang T., Buckle P.D. Room temperature operation of AlGaN/GaN Quantum well infrared photodetectors at a 3-4 m wavelenght range // Semicond. Sci.Technol. 2007, No. 22, p. 1240-1244.
Papagiannakis E., Vengris M., Valkūnas L., Cogdell R. J., Van Grondelle R., Larsen S.D., Excited-State Dynamics of Carotenoids in Light-Harvesting Complexes. 2. Dissecting Pulse Structures from Optimal Control Experiments // J.Phys.Chem. B 2006, No. 110, p. 5737-5746.
Papagiannakis E., Ivo H.M. Van Stokkum, Vengris M., Cogdell R. J., Van Grondelle R., Larsen S.D., Excited-State Dynamics of Carotenoids in Light-Harvesting Complexes.1.Exploring the Relationchip between the S1 and S* States // J.Phys.Chem. B 2006, No. 110, p. 5727-5736.