High accuracy length measurement using high-frequency repetitions of a mode-locked fiber laser (6th report)

CMM performance verification with mode-locked fiber laser tracker

抄録

We develop a tracking system for mode-locked fiber laser. New Fabry-Pérot etalon (FPE) is developed to select high-frequency parts of repetition-frequency modes of a short pulsed, mode-locked fiber laser in the wavelength of 1.55 μm. The 5-GHz repetition-modified laser is transmitted to a tracking fiber-type interferometer. The generated interference fringes have a temporal coherence interference fringe pattern at each 30 mm movement of CMM system and can make positioning in space. The performance of the CMM can be verified by comparing with interference fringes directly.