COMPARISON EXPERIMENT FOR PULSE REPETITION INTERVAL BASED LENGTH MEASUREMENT LINKED TO A FEMTOSECOND OPTICAL FREQUENCY COMB

Dong Wei, Kiyoshi Takamasu, Hirokazu Matsumoto

Abstract

As an alternative to the conventional method, which length measurement is performed as a function of the wavelength of a monochromatic laser source, we proposed the method of measuring arbitrary and absolute length using the pulse repetition interval of a femtosecond optical frequency comb (FOFC - the national standard tool for measuring length in Japan). A helium-neon laser evaluation system was developed for distance determination comparison experiment and its uncertainty estimation was performed in order to validate the proposed method.

Keywords

length measurement, optical frequency comb, pulse train, interference, repetition interval

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DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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