Kestutis Staliunas

Kestutis Staliunas

Universitat Politècnica de Catalunya

Engineering Sciences

Graduated Theoretical Physics, Vilnius University, Lithuania, 1985. PhD in Physics, Vilnius University, 1989. Habilitation in Physics, Vilnius University, 2001. A.v. Humboldt fellow in Physikalisch-Technische Bundesantstalt (PTB) Braunschweig, Germany, 1991-1992. Senior research fellow in Braunschweig PTB and University of Hannover on nonlinear pattern formation in laser systems and Bose condensates 1993-2003. Since 2004 ICREA research professor in Universitat Politècnica de Catalunya (UPC), Barcelona, head of research group on lasers, photonics and meta-photonics, nonlinear laser dynamics. Professional experience: around 250 articles in scientific journals with more than 9000 citations (h-factor 54); appr. 500 presentations in conferences (more than 100 invited ones); 4 patents, 2 monographs. Up to now directed (or currently directing) 20 PhD projects.

Research interests

Spatial quality of laser beams is of high importance in technologies: good quality beams propagate better collimated, can be more tight focused. Not all lasers, however, produce good beams: the radiation of especially very important semiconductor microlasers, microchip lasers,VCELSs, are too random and divergent. We develop new physical concepts and new techniques to manipulate the spatial structure of radiation, by using micro-modulated photonic materials: photonic crystals, metamaterials, Non-Hermitian optical materials. We develop these novel light-manipulation techniques in fundamental level and implement them in photonic industry. Also the good quality beams of microwaves, sound waves, or matter waves are required. We apply our experience in "smart manipulation of light patterns" to the other types of waves, to produce "clean" and well directed sound beams by so called "sonic crystals" in acoustics, as well as "clean" matter wave ensembles in modulated Bose condensates.

Selected publications

- Plukys M, Grineviciute L, Nikitina J, Gailevicius D & Staliunas K 2025, 'Polarization enhancement in Nd:YAG microchip laser with Meta-Mirror output coupler', Optics letters, 50 - 15 - 4666 - 4669.
- Lukosiunas I & Staliunas K 2025, 'Light amplification by active metamirrors', Physical review a, 112 - 3 - 033504.
- Letelier LA, Nikitina J, Grineviciute L & Staliunas K 2025, 'Double fano resonances in nano-modulated thin films for frequency and angular filtering', Optics and laser technology, 192 - 113617.
- Grineviciute L, Lukosiunas I, Nikitina J, Selskis A, Meskelaite I, Gailevicius D & Staliunas K 2025, 'Light trapping by non-Hermitian thin films', Physical review applied, 23 - 5 -054014.
- Kontenis G, Gailevicius D, Jukna V & Staliunas K 2025, 'Terahertz rate rotating helical intensity beams', Optics and laser technology, 182 -112036.
- Plukys M, Grineviciute L, Nikitina J, Gailevicius D & Staliunas K 2025, 'Enhancement of brightness in microchip laser with angular filtering mirrors', Optics and laser technology, 181 -111904.
- Aleksandravicius E, Kontenis G, Meskelaite I, Staliunas K, Dubietis A & Gailevicius D 2025, 'Spatial dispersion control with Laue-type Photonic crystals', Optics Express, 33, 50843-50853.

Selected research activities

Invited talks: SPIE'25 Prague, Photonic West'25 San Francisco, META'25 Malaga, ICTON'25 Barcelona;
Commitees: CLEO Europe/EQEC, SPIE Europe;
Master course "Optical Materials and Metamaterials" in Master of Photonics and Europhotonics programme. 
Defended PhD thesis: Salim Ivars (UPC). Participation in two PhD committees.