Paper 13109-59
Paper 13109-59
Inverse-designed superchiral dielectric metasurfaces (Invited Paper)
21 August 2024 • 11:00 AM - 11:25 AM PDT | Conv. Ctr. Room 6C
Abstract
Chirality, essential for distinguishing molecular enantiomers, impacts various scientific fields. Circular dichroism (CD) spectroscopy, which measures differential absorption of circularly polarized light, is limited by weak chiral-optical interactions, yielding minimal signals. Superchiral metasurfaces, enhancing optical chirality, offer improved CD signal and interaction with chiral molecules, necessitating advanced development for accurate analysis. This study presents a novel two-stage design methodology for optimizing superchiral metasurfaces, employing a neural network-based optimizer and adjoint topology optimization for enhanced optical chirality density. The results provide a platform for sensitive CD spectroscopy, facilitating fast optimization of metasurface unit cells for better chiral molecule analysis.
Presenter
Purdue Quantum Science and Engineering Institute, Purdue Univ. (United States), Quantum Science Ctr., Oak Ridge National Lab. (United States)
Prof. Alexander V. Kildishev works on theory and numerical modeling for nanophotonics. He has had several breakthrough results on negative refractive index metamaterials, optical artificial magnetic structures, loss compensation in metamaterials, plasmonic nanolasers, optical metasurfaces, optical cloaks, and hyperlenses. He has been included on the Highly Cited Researchers List for the years 2018, 2022, and 2023 in Web of Science (WOS).
Prof. Kildishev is a Fellow of Optica (OSA). His current h-factor is 72 WOS, 83 Google Scholar. Publications include 9 book chapters, about 200 publications in peer-reviewed journals, with more than 95 invited seminar talks and conference presentations, co-inventor of about 40 issued and pending patents (21 US patents, the lead inventor in 10 granted US patents), 11 software online simulation tools (with above 3,000 users and 56,000 jobs).