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AMO/QO Physics Seminar


"From Meta to Meso: Science and Applications of Metamaterials-Inspired Nanophotonics "


Dr. Gennady Shvets
The University of Texas, Austin

ABSTRACT 

Metamaterials are artificial electromagnetic materials exhibiting unusual optical responses. They represent a remarkably versatile platform for light manipulation, biological and chemical sensing, and nonlinear optics. Many of these applications rely on the resonant nature of metamaterials, which is the basis for extreme spectrally selective concentration of optical energy in the near field. In addition, metamaterial-based optical devices lend themselves to considerable miniaturization because of their sub-wavelength features. This additional advantage sets metamaterials apart from their predecessors, photonic crystals, which achieve spectral selectivity through their long-range periodicity. Remarkably, some of the most exciting applications and the most inspiring fundamental science can be found at what I would call a mesoscopic boundary between photonics crystals (wavelength-scaled periodic arrangements of simple building blocks) and traditional metamaterials (deeply sub-wavelength arrangements of highly sophisticated designer elements). I will discuss examples of such structures, namely, all-dielectric super-chiral metasurfaces, graphene-based modulators of infrared light, and photonic topological insulators capable of guiding light around sharply curved trajectories. In concluding remarks I will address nonlinear graphene photonics using metasurfaces, characterization/detection of circulating tumor cells, and the integration of inherently quantum objects with metamaterials.


Monday, June 16, 2014
IQSE 578, 12:30 noon
Mitchell Physics Building


Institute for Quantum Science and Engineering
Texas A&M University

(Sandwiches, chips, and water to be served at 12:00 noon)

Host: Dr. Marlan Scully