Flat Optics for Wavefront Engineering
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Flat Optics for Wavefront Engineering
Wed, 17/01/2024 - 15:00 to 16:00
Location:
Speaker:
Xianzhong Chen
Affiliation:
Institute of Photonics and Quantum Sciences at Heriot-Watt University, UK
Synopsis:
Device miniaturization and system integration are two continuing trends. However, further reduction in the thickness of the optical elements is hindered by the design theory. Optical metasurfaces consisting of nanostructures can control light propagation in a desirable manner, providing new opportunities to develop ultrathin optical devices with unusual functionalities. In this talk, I am going to review the current progress in optical metasurfaces and talk our recent work in metasurface based ultrathin optical devices (e.g., metalenses, holograms, optical vortex beams, multifunctional devices, and 3D polarization manipulation) and their applications in imaging, displays, encryption, and detection.
Biography:
Xianzhong Chen is an Associate Professor in the Institute of Photonics and Quantum Sciences at Heriot-Watt University, UK. His Experimental Nanophotonics Group is dedicated to the fundamental physics of optical metasurfaces and ultrathin optical devices for imaging, defence, display and information processing. His current research interests include metalenses, holograms, optical vortex beams and polarization detection. He has built connection with local industry, including STMicroelectronics, Renishaw and Ceres Holographics. He has published over 90 papers, including Nature Communications, Science Advances, Advanced Materials, Nano Letters, and Light: Science & Applications. He also serves as an Associate Editor of Frontiers in Nanotechnology.