title: High-accuracy absolute distance measurement using frequency comb referenced multiwavelength source.
abstract: We propose a new approach to multiple-wavelength interferometry, targeted to high bandwidth absolute distance measurement, with nanometer accuracy over long distances. Two cw lasers are stabilized over a wide range of frequency intervals defined by an optical frequency comb, thus offering an unprecedented large choice of synthetic wavelengths. By applying a superheterodyne detection technique, we demonstrated experimentally an accuracy of 8 nm over 800 mm for target velocities up to 50 mm/s.
authors.affiliation: Haute Ecole ARC Ingénierie, St-Imier, Switzerland. yves.salvade@he-arc.ch
authors.forename: Yves
authors.initials: Y
authors.lastname: Salvadé
authors.forename: Nicolas
authors.initials: N
authors.lastname: Schuhler
authors.forename: Samuel
authors.initials: S
authors.lastname: Lévêque
authors.forename: Sébastien
authors.initials: S
authors.lastname: Le Floch