Sub-micron absolute distance measurements in sub-millisecond times with dual free-running femtosecond Er fiber-lasers.
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TLDR
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.Abstract:
We demonstrate a simplified dual-comb LIDAR setup for precision absolute ranging that can achieve a ranging precision of 2 μm in 140 μs acquisition time. With averaging, the precision drops below 1 μm at 0.8 ms and below 200 nm at 20 ms. The system can measure the distance to multiple targets with negligible dead zones and a ranging ambiguity of 1 meter. The system is much simpler than a previous coherent dual-comb LIDAR because the two combs are replaced by free-running, saturable-absorber-based femtosecond Er fiber lasers, rather than tightly phase-locked combs, with the entire time base provided by a single 10-digit frequency counter. Despite the simpler design, the system provides a factor of three improved performance over the previous coherent dual comb LIDAR system.read more
Citations
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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
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
Invited Article: A compact optically coherent fiber frequency comb
Laura C. Sinclair,Jean-Daniel Deschenes,Lindsay Sonderhouse,William C. Swann,Isaac H. Khader,Esther Baumann,Nathan R. Newbury,Ian Coddington +7 more
TL;DR: It is shown that this phase-slip free operation follows the fundamental limit set by the SNR of the control signals, which should enable a wide-range of applications beyond the laboratory.
Journal ArticleDOI
Operation of an optically coherent frequency comb outside the metrology lab
Laura C. Sinclair,Ian Coddington,William C. Swann,Greg B. Rieker,Archita Hati,Kana Iwakuni,Nathan R. Newbury +6 more
TL;DR: A fully phase-locked frequency comb that can operate outside the well-controlled optical laboratory and should enable metrological measurements outside the laboratory with the precision and accuracy that are the hallmarks of comb-based systems is demonstrated.
Journal ArticleDOI
Operation of an optically coherent frequency comb outside the metrology lab.
Laura C. Sinclair,Ian Coddington,William C. Swann,Greg B. Rieker,Archita Hati,Kana Iwakuni,Nathan R. Newbury +6 more
TL;DR: In this article, a self-referenced fiber frequency comb has been demonstrated to operate in a moving vehicle with 0.5 g peak accelerations and on a shaker table with a sustained 0.4 -5 g rms integrated acceleration.
References
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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.
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Coherent multiheterodyne spectroscopy using stabilized optical frequency combs.
TL;DR: The broadband, coherent nature of narrow-linewidth fiber frequency combs is exploited to measure the full complex spectrum of a molecular gas through multiheterodyne spectroscopy, and the measured phase spectrum agrees with the Kramers-Kronig transformation of the absorption spectrum.
Journal ArticleDOI
Time-domain mid-infrared frequency-comb spectrometer.
TL;DR: A novel type of Fourier-transform infrared spectrometer based on two Ti:sapphire lasers emitting femtosecond pulse trains with slightly different repetition frequencies that superimposed upon a detector to produce purely time-domain interferograms that encode the infrared spectrum is demonstrated.
Journal ArticleDOI
Cavity-enhanced dual-comb spectroscopy
Birgitta Bernhardt,Akira Ozawa,Patrick Jacquet,Marion Jacquey,Yohei Kobayashi,Thomas Udem,Ronald Holzwarth,Guy Guelachvili,Theodor W. Hänsch,Nathalie Picqué +9 more
TL;DR: In this paper, a cavity-enhanced, frequency-comb, Fourier-transform spectroscopy (FTS) was proposed to measure high-resolution spectra in a few tens of microseconds without any need for detector arrays.
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.