Journal
OPTICS LETTERS
Volume 29, Issue 10, Pages 1153-1155Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.29.001153
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A scheme is proposed for high-precision, absolute length measurement for an arbitrary optical distance of a few meters to beyond 10(6) m. The approach utilizes a phase-stabilized femtosecond laser to provide both incoherent, time-of-flight information and coherent, fringe-resolved interferometry. Such a combined mea-surement capability allows an optical wavelength resolution to be achieved for absolute length measurement over a large dynamic range.
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