报告题目：通过激光微加工的高品质因子光学微腔
Fabrication of High-Q Microresonators by Laser Micromachining
报告人：方伟 （现代光学仪器国家重点实验室、浙江大学光电科学与工程学院）
报告时间：5月23号下午4点
报告地点：光电大楼938
邀请人：谷付星副教授
摘要：
Femtosecond laser micromachining has been a promising technique for fabricating three-dimensional (3D) micro/nano-structures in various kinds of dielectric materials with unprecedented spatial resolutions as well as flexibility in terms of the geometry and the materials can be processed. This unique capability opens opportunities for fabrication of 3D high-quality (Q) microresonators, which are one of the key elements in modern photonic applications. Here I will present our recent progress in fabrication of 3D microresonators on various dielectric substrates using femtosecond laser direct writing. The materials include glass (either passive or active glass materials) and nonlinear optical crystals such as lithium niobate. Microlasers and nonlinear optics based on these microcavities are demonstrated. Finally, I’ll present a simple method to fabricate high-quality ultra-small fiber-tip micromirror which is made with assistance of CO2 laser micromachining. With such micromirror, a tunable open FP microcavity can be constructed with high cavity to fiber coupling efficiency.
报告人简介：方伟副教授，于1999年在北京大学物理系获得学士学位；2006年在美国西北大学物理和天文系获得博士学位，导师为国际著名量子光学与微腔专家曹慧教授；2006-2008年在美国国家标准技术研究所（NIST）做博士后研究；2009年加入浙江大学光电信息工程学系。他的研究方向主要包括单光子/纠缠光子等量子光源、光学微腔与腔量子电动力学等，在Nature Commun.、PNAS、PRL、JACS、Nano Lett.、Opt. Lett.等学术期刊上发表论文50余篇，SCI引用2600余次。