WUHAN, China (May 17, 2018) - Wuhan Optoelectronics Forum No. 137 was successfully held in Auditorium A101 at Wuhan National Laboratory for Optoelectronics (WNLO) in the morning of May 17. Prof. Yangjian Cai from Shandong Normal University delivered an exciting talk entitled Research on Manipulating Spatial Coherence of Laser Beam. Prof. Jian Wang, from WNLO chaired the forum, and, awarded Prof. Yangjian Cai the forum medal.
High spatial coherence is a salient property of laser beam, while laser beam with low spatial coherence named partially coherent beam is preferred in many applications, such as correlated imaging (i.e., Ghost imaging), sub-Rayleigh imaging, free-space optical communications, particle trapping, laser detection, and particle scattering. The coherence structure of conventional partially coherent beams satisfy Gaussian distributions. Recently, more and more attention is being paid to partially coherent beams with nonconventional coherence functions, and such beam display many extraordinary properties, such as self-focusing, self-shaping, self-splitting, and super-strong self-reconstruction. Manipulating coherence structure of laser beam is useful for reducing atmospheric turbulence-induced disturbance, measuring the orbital angular momentum of vortex beam, overcoming the classic Rayleigh diffraction limit, and shaping the longitudinal field. In this talk, we will introduce research progress on manipulating spatial coherence of laser beam.
Professor Yangjian Cai, Dean of College of Physics and Electronics, Shandong Normal University, was born in Zhejiang, China, in 1977. He received Ph.D. degree in Physics from Zhejiang University, China, in 2005, and Ph.D. degree in electromagnetic theory from Royal Institute of Technology, Sweden, in 2006. From 2006 to 2009, he worked as a Postdoctoral Researcher and as a Humboldt Research Fellow in Max Planck Research Group, Institute of Optics, Information, and Photonics, University of Erlangen, Germany. In 2007, he won National 100 Excellent Ph. D. Theses Award of Ministry of Education of China. In 2009, he joined Soochow University as a distinguished professor. In 2018, he jointed Shandong Normal University. His research fields cover light manipulations and applications, optical imaging and atmospheric optics. He has published more than 270 SCI-indexed papers and two book chapters. In 2015, He was awarded the National Science Fund for Distinguished Young Scholars. In 2016, he was selected as a distinguished professor of Jiangsu Province. He was awarded as 2017 OSA Outstanding Reviewer.
