Speaker: Christos Argyropoulos

Abstract:
Plasmonic metasurfaces and nanoantennas can enhance, control, and manipulate the electromagnetic radiation in unprecedented ways and at nanoscale regions. They are poised to have fundamental implications at nanoscale light-matter interactions, especially in the nonlinear and quantum regimes. The large field enhancement in the vicinity of these systems due to localized or collective resonances ensures a significant boosting of optical nonlinear effects, chemical processes, collective and coherent spontaneous emission (superradiance), and other quantum effects in the weak and strong coupling regimes. In my talk, I will present recent theoretical and experimental advances towards demonstrating new nonlinear and quantum plasmonic systems. Several future integrated nanophotonic devices are envisioned based on the proposed nanostructures, such as nonlinear optical wave mixers and low-THz sources, nanolasers, all-optical switches, and efficient optical modulators with compact footprints.

Biography:
Christos Argyropoulos has been an Assistant Professor in the Department of Electrical and Computer Engineering at University of Nebraska-Lincoln since September 2014, where he has established the Metamaterials and Integrated Nanophotonics laboratory. He received the Diploma of Electrical and Computer Engineering from the Aristotle University of Thessaloniki, Greece (2006). He holds a M.Sc. degree in Communication Engineering from the University of Manchester, UK (2007) and a Ph.D. degree in Electronic Engineering from the Antennas and Electromagnetics Group of the Queen Mary, University of London, UK (2011). After completion of his Ph.D. studies, he accepted a Postdoctoral Fellowship position at the University of Texas at Austin, USA. Next (2013), he worked for one year as a Postdoctoral Associate in the Center for Metamaterials and Integrated Plasmonics at Pratt School of Engineering, Duke University, USA. He has published over 180 technical papers in highly ranked journals and refereed conference proceedings, including 5 book chapters. His work has been published in top-ranked high-impact journals, such as Nature, and Nature Photonics and Physical Review Letters, and highlighted in the worldwide general press. He has been the recipient of several international awards and recognitions for his research studies, such as the 2017 Young Scientist Award from URSI (Union Radio-Scientifique Internationale / International Union of Radio Science), 2017 ONR faculty research fellowship, Junior Researcher Award of the 2013 Raj Mittra Travel Grant, the international Travel Grant by Royal Academy of Engineering and twice the Marie Curie Actions Grant by the European School of Antennas. He also participates in the Optical Society of America and SPIE Traveling Lecturer programs. He is an Associate Editor of Optics Express. He is a senior member of IEEE, full member of URSI Commission B, and member of IEEE Antennas and Propagation Society, IEEE Photonics Society, Optical Society of America, SPIE, and American Physical Society.