讲座题目：Effects of finite-size particles on coherent Raman scattering 主讲人：C. H. Raymond Ooi 教授 主持人：Konstantin E. Dorfman 教授 开始时间：2019-10-30 10:00:00 讲座地址：光学大楼A408会议室 主办单位：精密光谱科学与技术国家重点实验室
报告人简介： Prof Dr Raymond Ooi obtained BSc from USM, Master of Engineering from Nanyang Technological University in photonics and Dr.rer.nat (PhD) from Universitaet Konstanz, Germany in 2003 on quantum optics and laser cooling of molecules. As Research Associate at Texas A&M University he worked with Prof. Marlan Scully on nonlinear optics, quantum coherence and laser interaction techniques. During this time, he was a Visiting Scientist at Princeton University and Max-Planck Institut fuer Quantenoptik. In 2006 he joined KAIST as a Research Professor and Korea University as Assistant Professor where he developed his research on intense laser matter interactions. He then joined University of Malaya as Associate Professor and started the “Quantum and Laser Science group. Under the support of High Impact Research grant he has developed a femtosecond laser and optics lab. His research has produced more than 100 ISI papers (mostly in Q1 journals), including three Nature Scientific Reports and two Physical Review Letters, with more than 1300 citations covering various aspects of quantum physics, quantum optics, nonlinear optics and spectroscopy, photonic structures and Bose-Einstein condensates. He served as the Chief Editor for the Jurnal Fizik Malaysia, editorial member for Central European Journal of Physics and the Academy of Sciences Malaysia (ASM) Science Journal. In 2013, he received the Malaysian Toray Science Foundation Science & Technology award. He was elected a Fellow of the Academy of Sciences Malaysia (ASM) in 2015, and has actively contributed to scientific issues of national interest. In 2018 Prof Raymond initiated the first international conference on Quantum and Nonlinear Optics (QNO2018) in Kuala Lumpur. He is also exploring the connection between spiritual science, philosophy of nature and quantum theory. 报告内容🐙🌉： In this talk I will present the use of semianalytical theory to study a quantum plasmonic system composed of a quantum particle and a metallic particle with finite size. The quantum particle is composed of molecules driven by three laser fields and produces a coherent anti-Stokes Raman scattering (CARS) signal which is enhanced by plasmonic resonance of the metallic particle. The enhanced CARS field and the control laser form a Raman scheme that gives highly nonlinear and spatially nonlocal effects. We obtain absorption spectra that show periodic oscillations with radius of the spherical quantum particle, the whispering gallery effect. Plasmonic resonance gives very large and narrow absorption peaks as well as vanishing absorption or Fano dip at specific values of frequency and interparticle distance. The space between the two particles provides a resonant cavity effect which explains the oscillations of absorption power spectra with interparticle distance. |
