行健讲坛学术讲座

第429期

时间：2019年12月27日（周五）上午10：00-11：30

地点：校本部东区翔英楼T516室

讲座：微纳光学频率梳

演讲者：刘骏秋  博士研究员  洛桑联邦理工学院（EPFL）

演讲者简介：

刘骏秋，瑞士洛桑联邦理工(EPFL)的在读博士，分别于2012年获中国科学技术大学物理学学士，2016年获德国University of Erlangen-Nuremberg光学硕士并获最高毕业荣誉。2015年加入Tobias Kippenberg组，博士研究方向为基于氮化硅和氮化铝的非线性集成光子学。博士期间，国际首次实现低于1dB/m损耗的集成氮化硅波导，并基于此实现倍频程孤子频率梳和10GHz重复频率的孤子频率梳，用于天体测量，激光雷达和光学相干断层扫描。研究领域主要包括，集成光子学、频率梳、MEMS、微波光子学等，已在Nature Photonics、Optica、PRL、 Nature Communications等国际著名刊物发表高水平论文10余篇。

讲座摘要：

Optical frequency combs are broadband light sources consisting of equidistant grid of frequencies. Over the past decades, optical frequency combs have revolutionized the fields of timing, spectroscopy and metrology. A recent breakthrough is the generation of frequency combs in optical microresonators based on photonic integrated circuit (PIC), thanks to the established semiconductor nano-fabrication technology. This new type of frequency combs, often called as “microcombs”, enables scalable, chip-scale, turnkey frequency combs at battery power consumption level, and have now reached a commercialization level for industrial applications.

The talks given by Dr. Candidate Junqiu Liu will cover the fundamental operational principles and latest technical development (particularly the fabrication process) in the field of integrated microcombs, as well as several key applications using microcombs for chip-scale frequency synthesizers, optical clocks, LIDAR, dual-comb spectroscopy, microwave photonics, as well as astrophysical spectometer calibration.

邀请人：通信与信息工程学院  郭海润教授

欢迎广大教师和学生参加！

承办单位：特种光纤与光接入网省部共建国家重点实验室培育基地

特种光纤与先进通信教育部国际合作联合实验室

协办单位：上海先进通信与数据科学研究院

《应用科学学报》编辑部