Journal ArticleDOI
High-accuracy absolute distance measurement using frequency comb referenced multiwavelength source.
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TLDR
A new approach to multiple-wavelength interferometry, targeted to high bandwidth absolute distance measurement, with nanometer accuracy over long distances, is proposed, with an accuracy of 8 nm over 800 mm for target velocities up to 50 mm/s.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.read more
Citations
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Journal ArticleDOI
Rapid and precise absolute distance measurements at long range
TL;DR: In this paper, the authors demonstrate a coherent laser ranging system that combines the advantages of time-of-flight and interferometric approaches to provide absolute distance measurements, simultaneously from multiple reflectors, and at low power.
Journal ArticleDOI
Soliton microcomb range measurement.
Myoung-Gyun Suh,Kerry J. Vahala +1 more
TL;DR: It is shown that optical frequency combs generated by microresonator devices can be used for precision ranging and the tracking of fast-moving objects and the chip-based source is an important step toward miniature dual-comb laser ranging systems suitable for photonic integration.
Journal ArticleDOI
Measurement technologies for precision positioning
Wei Gao,Seung-Woo Kim,Harald Bosse,Han Haitjema,Y.L. Chen,X.D. Lu,Wolfgang Knapp,Albert Weckenmann,William T. Estler,H. Kunzmann +9 more
TL;DR: In this paper, a review of measurement technologies for precision positioning in manufacturing industries is presented, followed by a discussion on traceability and standards, and some advanced applications of measurement technology for manufacturing industries.
Journal ArticleDOI
Soliton Microcomb Range Measurement
Myoung-Gyun Suh,Kerry J. Vahala +1 more
TL;DR: In this paper, the dual-comb distance measurement using chip-based soliton microcombs is demonstrated and the dual frequency combs are generated within a single microresonator as counter-propating solitons using a single pump laser.
Journal ArticleDOI
Sub-micron absolute distance measurements in sub-millisecond times with dual free-running femtosecond Er fiber-lasers.
TL;DR: A simplified dual-comb LIDAR setup for precision absolute ranging that can achieve a ranging precision of 2 μm in 140 μs acquisition time and provides a factor of three improved performance over the previous coherent dual comb LIDar system.
References
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Journal ArticleDOI
Laser phase and frequency stabilization using an optical resonator
TL;DR: In this article, the authors describe a new and highly effective optical frequency discriminator and laser stabilization system based on signals reflected from a stable Fabry-Perot reference interferometer.
Journal ArticleDOI
Optical frequency synthesizer for precision spectroscopy
Ronald Holzwarth,Th. Udem,Theodor W. Hänsch,Jonathan Knight,William J. Wadsworth,P. St. J. Russell +5 more
TL;DR: The frequency comb generated by a femtosecond mode-locked laser is used and broadened to more than an optical octave in a photonic crystal fiber to realize a frequency chain that links a 10 MHz radio frequency reference phase-coherently in one step to the optical region.
Journal ArticleDOI
High-accuracy measurement of 240-m distance in an optical tunnel by use of a compact femtosecond laser
TL;DR: The phase shift of the optical beat component between longitudinal modes of a mode-locked laser is measured and an absolute mechanical distance of 240 m was obtained to within 8-ppm accuracy by use of a series of beat frequencies with the advantage of a wide range of intermode frequency.
Journal ArticleDOI
Correction to the Updated Edlén Equation for the Refractive Index of Air
K P Birch,M J Downs +1 more
Journal ArticleDOI
Absolute measurement of a long, arbitrary distance to less than an optical fringe.
TL;DR: A scheme is proposed for high-precision, absolute length measurement for an arbitrary optical distance of a few meters to beyond 10(6) m using a phase-stabilized femtosecond laser to provide both incoherent, time-of-flight information and coherent, fringe-resolved interferometry.