Generation of ultrahigh and tunable repetition rates in CW injection-seeded frequency-shifted feedback lasers

Chatellus, Hugues Guillet de; Jacquin, Olivier; Hugon, Olivier; Glastre, Wilfried; Lacot, Éric; Marklof, Jens

doi:10.1364/oe.21.015065

Cited by 49 publications

(34 citation statements)

References 27 publications

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“…Our technique makes no use of non-linear media, nor fast electronic function generator. It is based on a simple frequency-shifting loop (FSL) seeded by a CW laser [34][35][36][37][38]. The comb lines are produced by successive frequency shifts in the loop.…”

Section: Introductionmentioning

confidence: 99%

Coherent multi-heterodyne spectroscopy using acousto-optic frequency combs

Durán¹,

Schnébelin²,

Chatellus³

2018

Opt. Express

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We propose and characterize experimentally a new source of optical frequency combs for performing multi-heterodyne spectrometry. This comb modality is based on a frequency-shifting loop seeded with a continuous-wave (CW) monochromatic laser. The comb lines are generated by successive passes of the CW laser through an acousto-optic frequency shifter. We report the generation of frequency combs with more than 1500 mutually coherent lines, without resorting to non-linear broadening phenomena or external electronic modulation. The comb line spacing is easily reconfigurable from tens of MHz down to the kHz region. We first use a single acousto-optic frequency comb to conduct self-heterodyne interferometry with a high frequency resolution (500 kHz). By increasing the line spacing to 80 MHz, we demonstrate molecular spectroscopy on the sub-millisecond time scale. In order to reduce the detection bandwidth, we subsequently implement an acousto-optic dual-comb spectrometer with the aid of two mutually coherent frequency shifting loops. In each architecture, the potentiality of acousto-optic frequency combs for spectroscopy is validated by spectral measurements of hydrogen cyanide in the near-infrared region.

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Section: Introductionmentioning

confidence: 99%

Coherent multi-heterodyne spectroscopy using acousto-optic frequency combs

Durán¹,

Schnébelin²,

Chatellus³

2018

Opt. Express

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“…Additionally, CW-seeded frequency-shifted loop cavities have been demonstrated to produce mode-locked pulse trains by emulating temporal Talbot conditions thanks to the interplay between the cavity roundtrip time and a frequency-shifting element. [68,126,127] Such laser architectures allow for generation of pulse trains from CW sources, with repetition rates tunable in the MHz and GHz regimes.…”

Section: Additional Properties and Extended Functionalitymentioning

confidence: 99%

Arbitrary Energy‐Preserving Control of Optical Pulse Trains and Frequency Combs through Generalized Talbot Effects

Cortés

Maram

Chatellus

et al. 2019

Laser & Photonics Reviews

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Trains of optical pulses and optical‐frequency combs are periodic waveforms with deep implications for a wide range of scientific disciplines and technological applications. Recently, phase‐only signal‐processing techniques based upon the theory of Talbot self‐imaging have been demonstrated as simple and practical means for user‐defined periodicity control of optical pulse trains and combs. The resulting schemes implement a desired repetition period control without introducing any noise or distortion, while ideally preserving the entire energy content of the signal. Here, recent developments on phase‐only signal‐processing schemes for periodicity control based on temporal and spectral self‐imaging are reviewed. As a central contribution, a comprehensive theory of generalized Talbot self‐imaging, so called phase‐controlled Talbot effect, is presented, comprising all the different approaches proposed to date. In particular, a closed unified mathematical framework for the design of the spectral and temporal phase manipulations that enable full arbitrary control of the period of repetitive signals is developed. The reported numerical studies fully validate the presented theoretical framework and shed light on crucial aspects of the proposed methods, consistently with previously reported experimental results. Important considerations concerning the practical, real‐world implementation of the described schemes, according to the needed specifications for different applications, are also discussed.

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“…Early work using specific properties of the FSF laser concerned the mechanical action of light on atoms, such as slowing and cooling of atoms in a beam [39] following up on a proposal by [40] or light-induced drift separation of Rb isotopes [41]. Further applications include accurate frequency-interval measurements [42]; efficient optical pumping of atoms [43,44]; efficient excitation of atoms in the higher atmosphere for preparation of a guide star [45,46,47]; observation of dark resonances in optical excitation of atoms [48]; realization of a FSF laser with high [49] or ultrahigh and variable [50] pulse rate; control of pulse duration [51] or new schemes for frequency stabilization [52]; rapid tuning of frequency [53]; and generation of a frequency comb for specific tasks in underwater sensing [54].…”

Section: Other Applications Of Fsf Lasersmentioning

confidence: 99%

Ranging with Frequency-Shifted Feedback Lasers: From μm-Range Accuracy to MHz-Range Measurement Rate

Kim¹,

Ogurtsov²,

Bonnet³

et al. 2018

Exploring the World With the Laser

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We report results on ranging based on frequency shifted feedback (FSF) lasers with two different implementations: (1) An Ytterbium-fiber system for measurements in an industrial environment with accuracy of the order of 1 µm, achievable over a distance of the order of meters with potential to reach an accuracy of better than 100 nm; (2) A semiconductor laser system for a high rate of measurements with an accuracy of 2 mm @ 1 MHz or 75 µm @ 1 kHz and a limit of the accuracy of ≥ 10 µm. In both implementations, the distances information is derived from a frequency measurement.The method is therefore insensitive to detrimental influence of ambient light. For the Ytterbium-fiber system a key feature is the injection of a single frequency laser, phase modulated at variable frequency Ω, into the FSFlaser cavity. The frequency Ω max at which the detector signal is maximal yields the distance. The semiconductor FSF laser system operates without external injection seeding. In this case the key feature is frequency counting that allows convenient choice of either accuracy or speed of measurements simply by changing the duration of the interval during which the frequency is measured by counting. 2 J. I. Kim et al.

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Generation of ultrahigh and tunable repetition rates in CW injection-seeded frequency-shifted feedback lasers

Cited by 49 publications

References 27 publications

Coherent multi-heterodyne spectroscopy using acousto-optic frequency combs

Coherent multi-heterodyne spectroscopy using acousto-optic frequency combs

Arbitrary Energy‐Preserving Control of Optical Pulse Trains and Frequency Combs through Generalized Talbot Effects

Ranging with Frequency-Shifted Feedback Lasers: From μm-Range Accuracy to MHz-Range Measurement Rate

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