Functional Topological Light Sources and Devices

Seminar | February 27 | 4-5 p.m. | Soda Hall, HP Auditorium, 306 Soda Hall

 Boubacar Kante, Assistant Professor, University of California, San Diego

 Electrical Engineering and Computer Sciences (EECS)

Light plays an essential role in modern societies, from entertainment to communications, defense, or medicine. The quest for smaller, lighter, and more efficient optical components and sources usually comes at the price of reduced functionalities. In this talk, I will discuss how geometrical and topological approaches to the control of light-matter interaction enable the construction of novel photonic devices with unique and enhanced functionalities. In particular, I will discuss the demonstration of the first Bound state In Continuum (BIC) laser, a nanophotonic laser that can beam coherent light in prescribed directions. I will also discuss the demonstration of the first topological laser that non-reciprocally couples stimulated emission to selected waveguide outputs, a long searched functionality in photonics. These sources, suitable for free space and integrated optics applications, open new opportunities to investigate more complex systems, and, they will find applications in LIDAR, high-capacity classical and quantum communications, or sensing.

Biography:
Boubacar Kanté is an assistant professor of Electrical and Computer Engineering at the University of California San Diego. He received an advanced graduate degree in Electrical Engineering and Computer Science from “École Polytechnique Universitaire de Lille” (France) together with the M. Sc. degree in Telecommunications in 2006. In 2010, he received a Ph.D degree in Engineering/Physics from “Université de Paris Sud” (Orsay-France). His research interests include wave-matter interaction and nano-optics, as well as related fields such as engineered nanophotonic structures, plasmonics, nanoscale-photon management, and bio-physics.
Boubacar Kanté received the 2017 Office of Naval Research (ONR) Young Investigator Award, the 2016 National Science Foundation (NSF) Career Award, the 2015 Hellman Fellowship, the Richelieu Prize in Sciences from the Chancellery of Paris Universities for the best Ph.D in France in Engineering, Material Science, Physics, Chemistry, Technology in 2010, the Young Scientist Award from the International Union of Radio Science (URSI) in Chicago in 2007, the Fellowship for excellence from the French Ministry of Foreign Affairs in 2003 for his undergraduate studies, a Research Fellowship from the French Research Ministry for his Ph.D studies.

 jeanrichter@berkeley.edu, 510-643-8208