Exotic Lasing and Field Manipulation at Microscale
微纳光场调控与激光物理
Renmin Ma（马仁敏）
ABSRACT
Laser is one of the most important inventions of the 20th century, whcih has wide applications range from nuclear fusion, manufacturing, optical communication, high-precision metrology, spectroscopy, and quantum information processing and so on. Advanced fundamental understanding on light-matter interaction provides a powerful toolbox for exotic lasing phenomena and field manipulation at microscale. In this talk, I will first discuss the intrinsic merit of microscale lasers, the key characteristics of them and the underlying physics. Then I will discuss eigenmode engineering of nanolasers, which can lead to novel inner laser cavity field and/or emission beam synthesis. Furthermore, ensembles of nanolasers operating in unison can provide a macroscopic response that would not be possible in conventional lasers. I will also discuss Jordan vector based radiation mechanism and it enabled exotic light source. I will conclude the talk with a perspective on the field.
自1960年第一台激光器发明以来，激光物理与应用发展迅速，深刻的改变了现代科学与技术以及我们生活的方方面面。随着光物理和微纳制备技术的发展，目前微纳光场调控和激光物理已经成为国际上光物理、激光物理与半导体物理的重要前沿交叉领域，处于重大机遇期，可能对光电集成、激光雷达、材料加工、传感探测、生物标记与成像、消费电子等领域带来变革性推动。在报告中我们将讨论微纳激光的基本物理和其性能优势。同时我们将讨论微纳激光的模式调控及其相关的新奇物理现象，包括约当矢量辐射机理和能带反转光反射机制等。最后我们将讨论微纳激光的应用与展望。
BIOGRAPHY
Ren-Min Ma is a Boya assistant professor at PKU. His lab focuses on the research of exotic lasing phenomena and field manipulation at microscale and their applications in spectroscopy, commutation and computing. Ma lab discovered a new light reflection mechanism of band-inversion-induced reflection, and demonstrated high performance topological bulk lasers. Ma lab also discovered a Jordan vector based radiation mechanism, which breaks conventional notion on light-matter interaction. Over the years, Ma lab contributed to the development of plasmonic nanolasers which can lead to laser device with fast operation and high energy efficiency at molecular scale.
Dr. Ma received his PhD degree in Physics from Peking University in 2009. He was a postdoc researcher at UC Berkeley during 2009 to 2014 before joining Peking University as a faculty. His research interests include laser physics and devices, nanophotonics, light-matter interaction, non-Hermitian and topological photonics. He published over 50 peer reviewed papers, including 11 in Science, Nature and their sub-journals. He was a recipient of the National Top 100 Ph.D. Dissertations of China Award, China’s Top 10 Optical Breakthroughs of 2018 Award and APS Physics Top 10 "Highlights of the Year" of 2018.
马仁敏博士现任北京大学物理学院研究员，博雅青年学者，北京大学纳光电子前沿科学中心副主任，Nature Research期刊Communications Physics 的External Editor。近期成果包括：1) 首次发现了基于约当矢量的新辐射机理，打破了辐射源和辐射环境共同决定辐射场这一传统观点，为调控光与物质相互作用提供了新方法；2) 首次发现了一种新的基于拓扑能带反转的光反射机制，实现了拓扑体态激光器，拓展了拓扑应用新方向；3) 实现了突破光学衍射极限的高性能等离激元激光，首次将其阈值降至商业化激光水平，并通过阈值、功耗和速率等系统表征证明了其性能优势，解决了激光微型化中的一个瓶颈问题。获得的荣誉包括 “2018中国光学十大进展”，“2018美国物理学会Physics十大进展”, “第49界PQE国际会议（美国）最佳摘要奖”，“Chinese Physics B Highlights of 2016”和“北京大学优秀博士论文指导教师奖”等。发表的工作包括3篇Nature/Science，3篇Nature Nanotechnology, 2篇Nature Materials，1篇Nature Physics，1篇Nature Commucnications，1篇Science Advances，2篇Physical Review Letters等。在APS March Meeting，Nature Conference等学术会议上做邀请报告50余次。