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第21期 武漢光電青年論壇:濾波器驅動四波混頻激光微腔頻率梳

來源:武漢光電國家研究中心    作者:    發布時間:2019年05月08日    浏覽:771次


時     間:2019年5月13日10:00

地     點:光電國家研究中心 A301

報 告 人:包華龍 博士, 英國薩塞克斯大學

邀 請 人:周軍 教授


報告題目:

濾波器驅動四波混頻激光微腔頻率梳

Filter-Driven Four Wave Mixing Laser Micro-combs


報告摘要 (Abstract):

       一種基于光學克爾效應的新型微腔光頻梳産生技術近年來成為國際研究熱點。由于其小型化、超高重複頻率等特點使其在精密光譜測量,微波産生、光通信等衆多領域發揮重要作用。本報告主要介紹一種基于微環諧振腔和環形增益光纖腔相結合的結構來實現光頻率梳的産生,通過合理地控制微環諧振腔和環行增益光纖腔的參數,實現了幾種不同的穩定态,包括激光腔孤子,圖靈環和第二類光頻率梳等。

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. 


報告人簡介(Biography):

      包華龍博士目前是英國薩塞克斯大學博士後研究員。2015年于丹麥技術大學取得博士學位,同年加入英國薩塞克斯大學新興光子實驗室工作,研究興趣為微型諧振腔光學頻梳技術,光纖激光器,太赫茲波導器件, 光纖傳感等領域,以第一作者在Nature Photonics, Scientific Reports, Research Photonics, Optics Express等國際SCI期刊上發表論文十餘篇。曾獲國際會議IEEE ICOCN2017青年科學家獎。

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.