Speaker：Dr. Bao Hualong, the University of Sussex, UK
Invited by：Prof. Zhou Jun
Time：10:00, May 13, 2019
Venue: A101
Abstract:
The generation of optical frequency combs in microresonators or micro-combs has developed into a hot research area in the past decade. Because of their unique characteristics, they have the potential to revolutionise many fields, spanning from metrology to optical communications. In this presentation, I will introduce how we achieve microcomb generation based on nesting a high-Q, nonlinear microresonator in a fibre laser loop. We termed this scheme filter-driven four-wave mixing (FD-FWM) laser, because the nonlinear interaction necessary to sustain the pulses generation is four-wave mixing (FWM) driven by an intra-cavity filter. In the system, several stable operating regimes, including laser cavity-solitons, Turing patterns and Type-II combs, over a wide range of operating conditions have been achieved. Our recent developments will be presented in details.
Biography：
Dr. Bao received the PhD degree from the Department of Photonics Engineering, Technical University of Denmark in 2015. At the same year, he joined the Emergent Photonics Laboratory at the University of Sussex as a postdoctoral research fellow. His current research interests include the micro-resonator based frequency combs generation, fibre lasers, terahertz waveguides, fibre sensors. He has published more than 10 journal papers including Nature Photonics, Scientific Reports, Research Photonics, Optics Express. He won the Young Scientist Award at the conference IEEE ICOCN2017.
