Metasurface-based Optical Imaging

Ting Xu

Institution: Nanjing University

An optical metasurface is a two-dimensional array of subwavelength-structured elements that interact with light to control its properties. These surfaces are engineered to have precise control over the phase, amplitude, and polarization of light, allowing for the manipulation of light waves in highly customizable ways. In this talk, I will introduce several metasurface-based optical imaging technologies from my research group, including spiral phase contrast imaging, light-field imaging with extreme depth-of-field and full-Stokes polarization imaging. Combined with the advantages of planar architecture and ultrathin thickness of the metasurface, these imaging technologies are expected to provide support in the fields of microscopy, biomedicine, and materials science.

Biography: Prof. Xu obtained his Ph.D. in Optical Engineering from the Institute of Optics and Electronics, Chinese Academy of Sciences, and was recognized with the Chinese Academy of Sciences' Outstanding Doctoral Thesis award. After graduating, he joined the National Institute of Standards and Technology (NIST) in the United States as a postdoctoral research fellow and was then promoted to research scientist in 2014. In 2015, he joined College of Engineering and Applied Science, Nanjing University as a professor. Dr. Xu currently serves as the Deputy Director of the Optical Manufacturing Committee of the Chinese Optical Society. Dr. Xu’s research primarily focuses on multi-dimensional light-field manipulation technology based on optical metamaterials and their applications. He has led the publication of over a hundred research papers, including in journals such as Nature, Nature Nanotechnology, Nature Communications, Science Advances and Physical Review Letters.