报告题目：Optically Active Centers in Solids

报告人：王笑军教授，美国南佐治亚大学

报告时间：2026年10月15日（星期四）上午09：00-10:30

报告地点： 致知楼3328会议室

报告摘要：

Optically active rare-earth and transition-metal ions strongly influence the optical and luminescent properties of solid-state materials, with applications in lighting, displays, lasers, sensing, imaging, and information storage. This talk will introduce their electronic structures and optical transitions, focusing on 4f–4f and 3d–3d transitions, crystal-field effects, local coordination, and host-lattice influences. Key luminescence processes, including excitation, relaxation, energy transfer, radiative emission, and nonradiative decay, will also be discussed. Emphasis will be placed on the links between electronic structure, local symmetry, and optical behavior, providing a foundation for designing functional photonic and luminescent materials.

报告人简介：

Professor Xiaojun Wang received his Bachelor's degree from Jilin University, his Master's degrees from the Chinese Academy of Sciences and the Florida Institute of Technology, and his PhD in Physics from The University of Georgia, USA. Since 1995, he has been a Professor of Physics at Georgia Southern University, USA. Professor Wang serves as Editor-in-Chief for the Materials Research Bulletin (Elsevier), and an Editor for Light: Science & Applications (Springer-Nature). He is also a Fellow of the American Physical Society.

邀请人：郑海荣 教授