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5月23日学术报告

来源： 发布时间：2013-05-21【字体：大 中 小】

题目：Polarization domains and domain wall solitons in fiber lasers

单位：新加坡南洋理工大学

姓名：Dingyuan Tang博士

时间：2013年5月23日（周四）上午10:00

地点：2号楼514室

Abstract:

Light propagation in dispersive nonlinear materials can exhibit optical domains: these are regions with different stable static states that lead to the minima of the Hamiltonian. A domain wall is a kink soliton which represents a switching between different domains. First predicted by Zakharov and Mikhailov in 1987 [1], optical polarization domain walls were theoretically extensively investigated. However, it was only experimentally observed with counter-propagating beams in nonlinear isotropic fibers [2]. In this talk, I will briefly review the theoretical works on the polarization domain walls and domain wall solitons, as well as the black-white soliton pair formation in weakly birefringent single mode fibers, and then demonstrate that the theoretically predicted domain wall solitons can be easily realized in single mode fiber lasers. I will show that based on the domain wall soliton formation in a laser, one can build a dark pulse emission or dark-bright pulse emission laser, which are new laser operation modes that have never been demonstrated before.　 

1.V. E. Zakhorov and A. V. Mikhailov, JETP Lett., 45, 349 (1987).

2.S. Pitois, G. Millot and S. Wabnitz, Phys. Rev. Lett., 81, 1409(1998).

Brief C.V. of Dr. D. Y. Tang:

Dr. D. Y. Tang received his B.Sc. degree in physics from Wuhan University, China in 1983, M.Sc. degree in laser physics from the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science in 1986, and Ph.D. degree in physics from Hannover University, Germany in 1993. From 1993 to 1994, he worked as a scientific employee at the Physikalisch-Technische Budesanstalt (PTB), Braunschweig, Germany. From 1994 to 1997, he was a university Postdoctoral Research Fellow, and from 1997 to 1999, an Australian Research Council (ARC) Postdoctoral Research Fellow, both at the University of Queensland, Australia. From 1999 to 2000, he was a Research Fellow in the Optical Fiber Technology Center (OFTC), University of Sydney, Australia. Since July 2000 he has been an Associate Professor in the School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore. Dr. Tang has published over 250 international journal papers with a H-index of 30. He is a member of the Optical Society of America (OSA) and Australian Optical Society (AOS). Currently he also services as an associated editor for the international journals of Optics Express, Optical Engineering, and Optics & Photonics Letters, and is holding a special professor appointment in the Jiangsu Normal University.　

 

　  欢迎大家参加！

　　　　　　 

　　　　　　　 所办公室

　　　　　　　 2013年5月21日

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