题目：Topological-cavity surface-emitting laser

报告人：陆凌

邀请人：杨兆举

时间：2024年6月14日（周五）13:30

地点：紫金港校区海纳苑8幢215报告厅

摘要：

Contrary to the common belief that Nobel-winning topological physics lacks practical applications, we demonstrate that the textbook design of everyday semiconductor lasers, used in internet communications and cellphones, aligns with standard topological models in 1D. By advancing to the 2D vortex zero mode, we invent topological-cavity surface-emitting lasers (TCSELs) that significantly outperform their commercial counterparts. Furthermore, we demonstrate the monopole modes in 3D, as proposed half a century ago by Jackiw and Rebbi, thus completing the kink-vortex-monopole trilogy of topological defect modes.

Nature Nanotechnology 15, 1012 (2020)

Nature Photonics 16, 279 (2022)

arXiv: 2210.09056 

个人简介：

Ling Lu is a group leader in the Institute of Physics, Chinese Academy of Sciences, Beijing China. He obtained his bachelor in Physics from Fudan University, and a Ph.D. in Electrical Engineering from University of Southern California where he worked on photonic crystal nanocavity lasers. He was a postdoc at Massachusetts Institute of Technology, where he and colleagues coined “topological photonics” and discovered “Weyl points”. He was awarded the Chen Ning Yang Award by the Asian Pacific Societies, Pei Yuan Zhou Award by the Chinese Physics Society, and the Highly Cited Researchers by Clarivate Web of Science.