Optical lattices offer exceptionally rich opportunities for control of propagation direction, diffraction broadening, and shape of the light beams in both linear and nonlinear media. Over last several years a wide variety of optical lattices with unusual symmetries was introduced, the focus of attention was shifted from simplest static conservative structures remaining invariable in the direction of light propagation, to dynamically modulated lattices or even complex nonconservative structures (such as PT-symmetric lattices), possessing distributed gain and losses. In this presentation I will describe most common methods for lattice fabrication, highlight some effects connected with symmetry of the refractive index landscape predicted in our group, and briefly discuss lattice solitons of different dimensionality. I will touch also resonant effects in dynamically modulated lattices and illustrate how they can be used to completely change dynamics of light propagation in the medium. Both regular and disordered lattice structures will be considered.
Dr. Yaroslav V. Kartashov is a leading researcher in theoretical department of Institute of Spectroscopy of Russian Academy of Sciences (Troitsk, Russia). At the same time he is holding position of visiting professor in ICFO-The Institute of Photonic Sciences (Castelldefels, Spain). Dr. Kartashov has received his PhD degree from Moscow State University in 1999. Since then he was working in Moscow State University as a senior researcher, and subsequently in ICFO as a research fellow. Research interests of Dr. Kartashov include self-action of light in nonlinear optical media, formation of self-sustained optical structures, diffractionless beams, plasmonics, and matter waves in Bose-Einstein condensates. He is co-author of more than 280 works in leading optical journals. He serves as a topical editor of Optics Letters.
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