时间：2023年10月30日上下午14:30
地点：理工楼18号楼-808会议室
主讲：Prof. Takashige Omatsu
主办：光电与信息工程学院，医学光电科学与技术教育部重点实验室，福建省光子技术重点实验室，信息光子学研究中心
专家简介：
He received his Ph.D. degree from the University of Tokyo, Japan, in 1992, and was appointed as a Professor at Chiba University, in 2007. He has been developing optical vortex light sources and pioneering optical vortex nano/microfabrication.
He is currently playing a role as an Editor-in-Chief, Optics Continuum. Also, he is serving as an Honorary/Visiting Professor of Xinjiang Normal University, China, Ajou University, Korea and Macquarie University, Australia. He was awarded the prize for Science and Technology, The Commendation for Science and Technology by the MEXT in 2016. He was also elected as Optica Fellow, SPIE Fellow and JSAP Fellow.
讲座简介：
Structured light beams, such as optical vortices, vector beams, and non-diffractive beams, exhibit various unique physical properties, for instance, annular intensity profile, helical wavefront, self-healing and orbital angular momentum. Thus, they provide new fundamental light-matter interactions and innovative technologies, including optical manipulations, optical/quantum communications, and high spatial resolution fluorescence microscopes.
Going beyond these aforementioned applications, we discovered that structure light with orbital angular momentum twists materials to create helical/chiral structured materials on a nano-/micro-scale. To date, a myriad of helical structured materials, such as helical needles, helical fibers, and chiral crystals, have been successfully fabricated by illumination of structured light.
In this seminar presentation, we review the state-of-art of the helical/chiral nano-/micro-structures formed by illumination of structured light. We also address a recent progress of advanced structured light sources.
Structured materials with structured light will potentially pave the way towards the revolution of materials science and technology, for instance, ultrahigh-sensitive detection and collection of chiral chemical composites, biomimetics based on helical structures, and fundamentals in physics with topologically protected quasiparticles.
