Title: Chiral and Nonlinear meta photonics
Name of the speaker: Prof. Yuri Kivshar
Date and Time: 9th October 2025, 3:00PM
Venue: S. V. Narsaiah Auditorium, IAP Department.
Abstract: Recently emerged field of resonant meta photonics employs resonances including Mie resonances in high-index dielectric nanoparticles and bound states in the continuum in dielectric meta surfaces aiming for novel applications of the subwavelength optics and photonics and benefiting from l effective magnetic and multipolar optical responses. In this talk, I will discuss the recent advances in meta photonics and meta surfaces focusing on nonlinear meta surfaces and chiral meta photonics. In particular, I will discuss maximum chirality in meta surfaces due to chiral bound states in the continuum, chirality encoding in meta surfaces, as well as some examples of nonlinear meta surfaces. I will demonstrate that nonlinear generation of circularly polarized light from achiral resonant dielectric meta surface is extremely sensitive to the linear polarization of the fundamental wave, and a single resonant meta surface can produce light with arbitrary degree of nonlinear chirality.
About of Speaker: Prof. Yuri Kivshar is a Distinguished Professor and Head of the Nonlinear Physics Centre at the Australian National University (ANU), Canberra, and Research Director at the International Research Centre for Nano photonics and Metamaterials, ITMO University, St. Petersburg, Russia. He received his Ph.D. in 1984 from Kharkov, Ukraine. After leaving the Soviet Union in 1989 and holding several visiting positions in Europe, he settled in Australia in 1993. His research spans nonlinear physics, metamaterials, and nano photonics. He is renowned for pioneering work on solitons and has made foundational contributions to self-focusing effects, metamaterials, dielectric nano-antennas, topological insulators, optical signal processing, and optical communications. Prof. Kivshar is a Fellow of the Australian Academy of Science (since 2002), as well as a Fellow of Optica, APS, SPIE, and IOP. He has received numerous prestigious awards, most recently the 2022 Max Born Award and the 2025 ZEISS Research Award (Germany).