题 目：Tailoring Complex Optical Fields（复杂广场裁剪）
报告人：Qiwen Zhan, Ph.D.（Professor，Department of Electro-Optics and Photonics，University of Dayton）
时 间：12月9日（周五），下午2:30-3:30
地 点：物理馆512会议室

Abstract：Recently there is an increasing interest in complex optical fields with spatially variant amplitude, phase and/or polarization within the beam cross-section. Scalar optical vortices carrying orbital angular momentum and vectorial vortices such as radially, azimuthally polarized beams are among the most intensively studied examples. The added degrees of freedom arising from the amplitude, phase and polarization diversity within the beam cross-section enables scientists and engineers to break the limits imposed by conventional wisdom in many optical and photonic applications. Applications of these complex optical fields in many promising areas and new commercial products continue to emerge. This talk aims to serve as an introduction of the fundamentals and applications in this field to broad audience.

Figure 1. Pupil field for spin density engineering and directional emission.

Short Bio：Dr. Qiwen Zhan is Professor of Department of Electro-Optics and Photonics, Professor of Electrical & Computer Engineering, Director of the Nano Electro-Optics Laboratories, and Director of the Fraunhofer Research Center at the University of Dayton. He received BS in Physics (optoelectronic) from the University of Science and Technology of China in 1996 and Ph.D. in Electrical Engineering from the University of Minnesota in 2002. Prof. Zhan’s research has attracted more than $4M as PI and more than $7M as co-PI. He has published 1 book, 7 book chapters, more than 150 journal and conference publications, delivered many conference presentations and invited talks/lectures/seminars, and possessed 6 US patents. Dr. Zhan is an Editorial Board Member for Scientific Reports (Nature Publishing Group), Editorial Board Member for Journal of Nondestructive Evaluation (Nature-Springer). He has also served as Topical Editor for Applied Optics (OSA), Associate Editor for Science Bulletin, Guest Editor for Optics Express (OSA), Special Symposium Chair of CLEO and Chair of the Polarization Technical Group of the OSA. Prof. Zhan is elected Fellow of the OSA and Fellow of the SPIE. He is also a senior member of the IEEE, IEEE Photonics Society and a member of the AAAS.