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特邀台湾清华大学李瑞光教授到我校作学术报告

发布者:朱永生发布时间:2022-09-23浏览次数:380

报告题目: Nonlinear Waves in Vertical Cavity Surface Emission Lasers with a Curved Potential

 

报告时间:2016年6月21日(星期二)10:00           

 

报告地点:尚贤楼402报告厅                    

 

报 告人:Ray-Kuang Lee  (李瑞光) 教授

 

报告摘要:With  micro-structured vertical cavity surface emission semiconductors  (VCSEL), lasing on extremely higher-order whispering-gallery modes,  dynamical chaotic modes, superposition of periodic-orbit and  non-periodic orbitals, linear and nonlinear surface modes, and crescent  waves are demonstrated in experiments and simulations. To have wave  localized, the delicate balance of linear and nonlinear effects sustain  self-localized solitary waves. However, their observation requires a  threshold power that in many cases is not accessible. A challenge is  finding mechanisms to reduce this threshold, and the use of optimized  geometrical constraints looks a promising strategy. Here we  experimentally demonstrate a thresholdless nonlinear localized wave  pinned to the boundary of a curvature, in an elliptical-ring potential  without any extra formation power. The corresponding lasing  characteristics including near/far field and dispersion-relation  measurements verify the localization of nonlinear waves.The introduction  of curved manifolds opens a new generation for nonlinear optical  systems and laser devices with a vanishing power threshold.

 

报告人简介:  Ray-Kuang Lee received his BS degree from the department of Electrical  Engineering, National Taiwan University (EE/NTU) in 1997, and his MS and  PhD degrees from the Institute of Electro-Optical Engineering, National  Chiao Tung University (IEO/NCTU), in 1999 and 2004, respectively. He  worked as an assistant scientist at the National Center for  High-Performance Computing, Taiwan, from 2001 to 2004, and as a visiting  fellow at The Australian National University (ANU), Australia, in 2004.  After his graduation, he continued staying in IEO/NCTU as a  postdoctoral fellow in 2005. Then, he joined the department of  Electrical Engineering and Institute of Photonics Technologies, National  Tsing-Hua University (NTHU) as a faculty member at Aug. 2005, where he  established the Theoretical Optics Group dedicated to the establishment  of theory for optical solitons and vortices in nonlinear systems,  slow-light optics, Bose-Einstein condensates, and quantum memory.  Currently, he is also an adjunct Professor in the department of Physics,  National Tsing-HuaUniversity, the affiliate Scientist of the Physics  division, National Center of Theoretical Science, for the research areas  in Atom-Molecular-Optics/Interdisciplinary Physics, and was a visiting  fellow at the Max-Planck Research Group at Erlangen University, Germany  (2006), the Australian National University, Australia (2007, 2010),  National Chung-Hsing University Taiwan (2008, 2010), and Kansas State  University, United State (2009).

Dr.  Lee’s research was recognized as an interdisciplinary work to the  societies from theoretical physics, applied photonics, to laser  engineering, and due to his contributions, he received the Young  Investigator Award from the Academic Sinica, Taiwan (2012), Wu Ta You  Memorial Award from the National Science Council, Taiwan (2011), the  Outstanding Young Electrical Engineering Award from the Chinese  Institute of Electrical Engineering (2010), the Young Theoretical  Physician Award from the National Center for Theoretical Science, Taiwan  (2010), the Young Optical Engineer Award from the Optical Engineering  Society of ROC (2009), the Y. Z. Hsu Scientific Paper Award from the Far  Eastern Y. Z. Hsu Science and Technology Memorial Foundation (2010),  and the Exploration Research Award from the Pan Wen Yuan Foundation  (2009).

Dr.  Lee’s group has strong collaborations with several groups worldwide,  including Prof. Yu.S. Kivshar’s group in Australia, Prof. M.A. Malomed’s  group in Israel, Prof. A.P. Alodjants’ group in Russia, and Prof. W.X.  Yang’s group in China. He has published more than 80 technical journal  papers, including 5 in Physical Review Letters, 12 in Optics Letters, 7  in Optics Express, and 30 in Physical Review, with total citation >  1100 and H-index = 18. His work Quantum Phase Transitions of Light for  Two-level Atoms, was selected as one of “Optics in 2008” by the Optical  Society of America (OSA); Absolute frequency of cesium 6S-8S hyperfine  transition by two-photon interfered spectrum, Opt. Lett. 38, 3186  (2013), was selected as Spotlight on Optics; Local PT symmetry violates  the no-signaling principle, Phys. Rev. Lett. 112, 130404 (2014), was  selected as Editors' Suggestion and as Featured in Physi

     

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