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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Published in | Applied optics (2004) Vol. 47; no. 14; p. 2715 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
10.05.2008
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Online Access | Get more information |
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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. |
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ISSN: | 1559-128X |
DOI: | 10.1364/ao.47.002715 |