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. Between 1993-2003 senior research fellow in Braunschweig PTB and University of Hannover on nonlinear pattern formation in laser systems 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. 6000 citations (h-factor 45); appr. 500 presentations in conferences (more than 100 invited ones); 3 patents, 2 monographs. Up to now directed (or currently directing) 17 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, are too random and divergent. 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

- T. Moein, et al 2020, 'Optically-Thin Broadband Graphene-Membrane Photodetector', Nanomaterials, 10, 3, 407.

- Pardell, Judith Medina; Herrero, Ramon; Botey, Muriel; Staliunas, Kestutis 2020, 'Stabilized narrow-beam emission from broad-area semiconductor lasers', Physical Review A, 101, 3, 033833.

- Wang, P. Y.; Herrero, R.; Botey, M.; Cheng, Y. C.; Staliunas, K. 2020, 'Translationally invariant metamirrors for spatial filtering of light beams', Physical Review A, 102, 1, 013517.

- S. Gawali, et al 2020, 'Spatial filtering in edge-emitting lasers by intracavity chirped photonic crystals', Journal Of The Optical Society Of America B-optical Physics, 37, 10, 2856 - 2864.

- D. Gailevicius, et al 2020, 'Tilted black-Si: similar to 0.45 form-birefringence from sub-wavelength needles', Optics Express, 28, 11, 16012 - 16026.

- Minin, Igor, V; Liu, Cheng-Yang; Yang, Yu-Chih; Staliunas, Kestutis; Minin, Oleg, V 2020, 'Experimental observation of flat focusing mirror based on photonic jet effect', Scientific Reports, 10, 1, 8459.

- W. W. Ahmed, R. Herrero, M. Botey, Y. Wu, and K. Staliunas 2020, 'Restricted Hilbert transform for non-Hermitian management of fields', Phys. Rev. Applied, 14, 044010.

Selected research activities

Invited talks: ICTON'20 telematic, Photonic West'20 San Francisco, METANANO'20 telematic, ICLO'20 telematic;

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

Defended PhD thesis: Sandeep Gawali (UPC);

Committees of PhD Thesis: N. Garaev (Vilnius University), D.Zezyulin (Jena University);