Topic：Development and application of fiber-based optical frequency combs in precision metrology

Lecturer：Kaoru Minoshima

Time：10:00, November 11, 2016

Place：F706,New Main Building 

Abstract:

Optical frequency comb can be used as a tool for high-precision and versatile control of properties of light wave as an “optical synthesizer”. It provides powerful tools not only in frequency metrology as “ultraprecise frequency ruler” but also in broad area since light wave can be used to its full extent with an extremely wide dynamic range. In this lecture, first I will present our recent achievements on the development of fiber-based frequency combs, which is a key for practical applications. High-precision relative locking between two Er-fiber combs and development of high-repetition frequency Yb-fiber combs are presented. Next, various metrology applications, including dual-comb spectroscopy of gas and solid, high-accuracy and long distance measurement with self-correction of air refractive index, and one-shot 3D imaging are presented.