Continuous real-time correction and averaging for frequency comb interferometry

Roy, J.C.; Deschênes, Jean-Daniel; Potvin, Simon; Genest, Jérôme

doi:10.1364/oe.20.021932

Cited by 200 publications

(109 citation statements)

References 18 publications

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“…6(a)). A portion of the RF power spectrum generated from Fourier transform of 0.16 sec of data after applying the linear phase correction [38,40] is shown in Fig. 6…”

Section: Resultsmentioning

confidence: 99%

Picometer-resolution dual-comb spectroscopy with a free-running fiber laser

Zhao

et al. 2016

Opt. Express

210

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Dual-comb spectroscopy utilizes two sets of comb lines with slightly different comb-tooth-spacings, and optical spectral information is acquired by measuring the radio-frequency beat notes between the sets of comb lines. It holds the promise as a real-time, high-resolution analytical spectroscopy tool for a range of applications. However, the stringent requirement on the coherence between comb lines from two separate lasers and the sophisticated control system to achieve that have confined the technology to the top metrology laboratories. By replacing control electronics with an all-optical dualcomb lasing scheme, a simplified dual-comb spectroscopy scheme is demonstrated using just one dual-wavelength, passively mode-locked fiber laser.Dual-comb pulses with a repetition-frequency difference determined by the intracavity dispersion are shown to be sufficiently stable against common-mode cavity drifts and noises. As sufficiently low relative linewidth is maintained between two sets of comb lines, capability to resolve RF beat notes between comb teeth and picometer-wide optical spectral features is demonstrated using a simple data acquisition and processing system in an all-fiber setup. Possibility to use energy-efficient, free-running fiber lasers with a small comb-toothspacing could enable the realization of low-cost dual-comb spectroscopy systems affordable to more applications.

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“…6(a)). A portion of the RF power spectrum generated from Fourier transform of 0.16 sec of data after applying the linear phase correction [38,40] is shown in Fig. 6…”

Section: Resultsmentioning

confidence: 99%

Picometer-resolution dual-comb spectroscopy with a free-running fiber laser

Zhao

et al. 2016

Opt. Express

210

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“…Since then, several spectroscopy techniques using frequency combs have been demonstrated in various parts of the optical spectrum 2 . In the context of molecular spectroscopy, dual-comb spectroscopy [3][4][5][6][7][8][9] was proposed as an intriguing form of Fourier transform spectroscopy technique, showing a dramatic reduction in measurement times. The mid-infrared part of the optical spectrum is of paramount importance for molecular spectroscopy as the fundamental rotovibrational bands of most light molecules lie in this spectral range, with absorption strength orders of magnitude higher than in the visible or near-infrared 10 .…”

mentioning

confidence: 99%

Dual-comb spectroscopy based on quantum-cascade-laser frequency combs

et al. 2014

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Dual-comb spectroscopy performed in the mid-infrared-where molecules have their strongest rotovibrational absorption lines-offers the promise of high spectral resolution broadband spectroscopy with very short acquisition times (ms) and no moving parts. Recently, we demonstrated frequency comb operation of a quantum-cascade-laser. We now use that device in a compact, dual-comb spectrometer. The noise properties of the heterodyne beat are close to the shot noise limit. Broadband (15 cm À 1 ) high-resolution (80 MHz) absorption spectroscopy of both a GaAs etalon and water vapour is demonstrated, showing the potential of quantum-cascade-laser frequency combs as the basis for a compact, all solid-state, broadband chemical sensor.

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“…A nice example of this approach occurs in microwave generation where frep is isolated and stabilized by detecting and signal processing fceo and fn [150,164]. Variations have been applied to both dual-comb spectroscopy [80,165,166] and in low noise optical frequency transfer [38].…”

Section: Stabilization By Processingmentioning

confidence: 99%

Optical Frequency Comb Generation based on Erbium Fiber Lasers

et al. 2016

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Optical frequency combs have revolutionized optical frequency metrology and are being actively investigated in a number of applications outside of pure optical frequency metrology. For reasons of cost, robustness, performance, and flexibility, the erbium fiber laser frequency comb has emerged as the most commonly used frequency comb system and many different designs of erbium fiber frequency combs have been demonstrated. We review the different approaches taken in the design of erbium fiber frequency combs, including the major building blocks of the underlying mode-locked laser, amplifier, supercontinuum generation and actuators for stabilization of the frequency comb.

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Continuous real-time correction and averaging for frequency comb interferometry

Cited by 200 publications

References 18 publications

Picometer-resolution dual-comb spectroscopy with a free-running fiber laser

Picometer-resolution dual-comb spectroscopy with a free-running fiber laser

Dual-comb spectroscopy based on quantum-cascade-laser frequency combs

Optical Frequency Comb Generation based on Erbium Fiber Lasers

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