High-accuracy absolute distance measurement using frequency comb referenced multiwavelength source

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 unprece...

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Bibliographic Details
Published inApplied optics (2004) Vol. 47; no. 14; p. 2715
Main Authors Salvadé, Yves, Schuhler, Nicolas, Lévêque, Samuel, Le Floch, Sébastien
Format Journal Article
LanguageEnglish
Published United States 10.05.2008
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Summary: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.
ISSN:1559-128X
DOI:10.1364/ao.47.002715