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.

Cite this paper

@article{Salvade2008HighaccuracyAD, title={High-accuracy absolute distance measurement using frequency comb referenced multiwavelength source.}, author={Yves Salvade and Nicolas Schuhler and Samuel L{\'e}v{\^e}que and S{\'e}bastien Le Floch}, journal={Applied optics}, year={2008}, volume={47 14}, pages={2715-20} }