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. Between 1993-2003 senior research fellow in Braunschweig PTB and University of Hanover researching on nonlinear pattern formation in lasers (optical vortices, spatial solitons) and Bose condensates. 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 appr. 5000 citations (h-factor 40); appr. 500 presentations in conferences (appr. 100 invited ones); 2 patents, 1 monograph. Up to now directed (or currently directing) 15 PhD projects.

Research interests

Spatial quality of laser beams is of high importance in technologies: good quality beams propagate better, can be more tight focused. Not all lasers, however, produce good beams: the radiation of especially very important semiconductor microlasers, microchips, are too noisy. We develop new physical concepts and new techniques to manipulate the spatial structure of radiation, by using micro-modulated smart photonic materials: photonic crystals, metamaterials, nonhermitian 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

- Kumar S, Perego AM & Staliunas K 2017, 'Linear and nonlinear bullets of the Bogoliubov-De Gennes excitations', Phys. Rev. Letters, 118(4):044103. 

- Hayran Z, Kurt H & Staliunas K 2017, 'Rainbow trapping in a chirped three-dimensional photonic crystal', Scientific Reports, 7, 3046.

- Ahmed WW, Herrero R, Botey M & Staliunas K 2017, 'Self-collimation in PT -symmetric crystals', Physical Review A, 95, 5, 053830.

- Staliunas K 2017, 'Multi-longitudinal-mode micro-laser model', European Physical Journal D, 71, 10, 257.

- Staliunas K, Markos P & Kuzmiak V 2017, 'Scattering properties of a PT dipole', Physical Review A, 96, 4, 043852.

- Gailevičius D, Purlys V, Peckus M, Gadonas R & Staliunas K 2017, 'Spatial Filters on Demand Based on Aperiodic Photonic Crystals', Annalen der Physik, 529, 8, 1700165, 2017

- Turduev M, Giden IH, Babayigit C, Hayran Z, Bor E, Boztug C, Kurt H &Staliunas K 2017, 'Mid-infrared T-shaped photonic crystal waveguide for optical refractive index sensing', Sensors And Actuators B-chemical, 245, 765 - 773.

Selected research activities

Invited and plenary talks: ICTON'17 Girona, Meta'17 Seoul, SPIE'17 Prague, DNDO'17 Dresden,  Nat.Conf.'17 Vilnius;

Master course "Optical Materials and Metamaterials" in Europhotonics programme. 

Defended PhD thesis: Nikhil Kumar (UPC), Shubham Kumar (UPC);

Committees of PhD Thesis: R.Kazakevicius (Vilnius University), V.Juknevicius (Vilnius University), M.Elsawy (Marseille Universite);