Diode-laser-based high-precision absolute distance interferometer of 20 m range

We present a hybrid absolute distance measurement method that is based on a combination of frequency sweeping, variable synthetic, and two-wavelength, fixed synthetic wavelength interferometry. Both experiments were realized by two external cavity diode lasers. The measurement uncertainty was experi...

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Bibliographic Details
Published in:Applied optics. Optical technology and biomedical optics 2009-11, Vol.48 (32), p.6188
Main Authors: Pollinger, Florian, Meiners-Hagen, Karl, Wedde, Martin, Abou-Zeid, Ahmed
Format: Article
Language:English
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Summary:We present a hybrid absolute distance measurement method that is based on a combination of frequency sweeping, variable synthetic, and two-wavelength, fixed synthetic wavelength interferometry. Both experiments were realized by two external cavity diode lasers. The measurement uncertainty was experimentally and theoretically demonstrated to be smaller than 12 microm at a measurement distance of 20 m.
ISSN:2155-3165
DOI:10.1364/ao.48.006188