Development of non-contact precision measurement technique by using optical frequency comb

Measurement principle using two optical frequency comb lasers and basic experiment

Abstract

In this research, we develop a technique for high-resolution(10µm) and non-contact distance measurement for measuring objects. We use two optical frequency comb lasers as light sources, thus we make use of the stability of the repetition frequency of optical frequency comb for high-accuracy measurement. Moreover, we don′t have to consider cyclic error caused by RF frequency oscillator. This first report shows an experiment to demonstrate the measurement principle using two optical frequency comb lasers.