Dual-comb spectroscopy with a phase-modulated probe comb for sub-MHz spectral sampling

Hébert, Nicolas Bourbeau; Michaud-Belleau, Vincent; Magnan-Saucier, Sébastien; Deschênes, Jean-Daniel; Genest, Jérôme

doi:10.1364/ol.41.002282

Cited by 27 publications

(8 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While mode-locked optical frequency combs present a powerful platform for multiplexed Doppler-broadened spectroscopy [10, 11], their wide comb spacing (generally between 100 MHz and 1 GHz) is far too large to interrogate sub-Doppler features without a slow dither of the repetition rate [12]. More recently an external phase modulator has been used to reduce the comb mode spacing of a mode-locked laser comb [13]. Here we present an alternate approach in which a narrowly spaced optical frequency comb is generated through the use of an electro-optic phase modulator (EOM) [14–16] driven by a frequency chirped waveform from an arbitrary waveform generator (AWG).…”

mentioning

confidence: 99%

“…AWGs with sampling rates as high as 92 GSamples/s are commercially available, which when paired with commercial high-bandwidth phase modulators could further broaden the optical bandwidth to >60 GHz. Further bandwidth enhancements could be achieved by imprinting the present electro-optic-phase-modulator-based frequency comb upon a mode-locked laser frequency comb [13]. Extension of the present approach to the mid-infrared region could be achieved using difference frequency generation [30] approaches and should allow for rapid, multiplexed sub-Doppler spectra on a variety of important molecular species.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Multiplexed sub-Doppler spectroscopy with an optical frequency comb

et al. 2016

View full text Add to dashboard Cite

An optical frequency comb generated with an electro-optic phase modulator and a chirped radiofrequency waveform is used to perform pump-probe spectroscopy on the D1 and D2 transitions of atomic potassium at 770.1 nm and 766.7 nm, respectively. With a comb tooth spacing of 200 kHz and an optical bandwidth of 2 GHz the hyperfine transitions can be simultaneously observed. Interferograms are recorded in as little as 5 μs (a timescale corresponding to the inverse of the comb tooth spacing). Importantly, the sub-Doppler features can be measured as long as the laser carrier frequency lies within the Doppler profile, thus removing the need for slow scanning or a priori knowledge of the frequencies of the sub-Doppler features. Sub-Doppler optical frequency comb spectroscopy has the potential to dramatically reduce acquisition times and allow for rapid and accurate assignment of complex molecular and atomic spectra which are presently intractable.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Multiplexed sub-Doppler spectroscopy with an optical frequency comb

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The result is a free-running system whose spectral region of operation can be easily extended outside the C band (to 1 µm or 2 µm) by means of the currently available EO technology. The possibility of reducing the line spacing to the megahertz level makes possible an extremely fine spectral sampling, which is of interest in applications such as spectroscopy of high-quality-factor microresonators [28], atomic spectroscopy [32] and optical sensing [14], [15], [33]. In those applications, the simple and robust design presented here represents a step towards the development of real field-deployable comb-based instruments.…”

Section: Discussionmentioning

confidence: 99%

“…The features of our DFC generator allow us to produce optical frequency combs with a line spacing that can be reduced to the megahertz range. These dense combs can be exploited to perform a fine spectral sampling of narrow optical resonances by DCS [28]. The absorption lines of gases measured in conventional molecular spectroscopy have typically linewidths of a few GHz, which are too broad to benefit from the small line spacing offered by our DCS scheme.…”

Section: B Fine Spectral Sampling Using the Generated Dfcmentioning

confidence: 99%

Common-Path Dual-Comb Spectroscopy Using a Single Electro-Optic Modulator

Soriano-Amat

Soto

Durán

et al. 2020

J. Lightwave Technol.

View full text Add to dashboard Cite

Dual frequency comb (DFC) spectroscopy using electro-optic comb generators stands out for its flexibility, easy implementation, and low cost. Typically, two combs with different line spacing are generated from a common laser using independent electro-optic comb generators. This approach minimizes the impact of laser phase noise; however, the distinct paths followed by the two combs ultimately limit the attainable signal-to-noise ratio and long-term stability of the system. In this work, a common-path DFC is generated using a single modulator driven by an arbitrary waveform generator, thus enabling a remarkable increase of the system stability (up to 0.8 s of integration time) while maintaining high flexibility. The proposed technique is experimentally validated by implementing a dual frequency comb with 3000 lines, covering an optical bandwidth of 4.5 GHz, and demonstrating an opticalto-radiofrequency compression factor of 7500. Our system is able to measure extremely narrowband optical features (in the MHz range) with an accuracy only limited by the master laser stability. Index Terms-Arbitrary waveform generation, brillouin scattering, dual comb spectroscopy, optical frequency combs. I. INTRODUCTION O PTICAL frequency combs (OFCs) have become a groundbreaking technology in a variety of applications, such as precision spectroscopy [1], distance ranging [2] and telecommunications [3], to name just a few. In some of these applications, the interference of two OFCs with slightly different line spacing enables the acquisition of high-resolution spectra with Manuscript

show abstract

“…Conventional periodicity control solutions based on signal processing operations rely on wave transformations that directly affect the energy content of the signal (e.g., spectral amplitude filtering and temporal amplitude modulation); these methods present critical shortcomings, not least of which is their inherent energy inefficiency (briefly discussed in Section ). Signal processing solutions based on phase‐only manipulations are particularly attractive, as they recycle the energy carried by the input signal into an output signal that satisfies the required specifications …”

Section: Introductionmentioning

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

View full text Add to dashboard Cite

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.

show abstract

Dual-comb spectroscopy with a phase-modulated probe comb for sub-MHz spectral sampling

Cited by 27 publications

References 19 publications

Multiplexed sub-Doppler spectroscopy with an optical frequency comb

Multiplexed sub-Doppler spectroscopy with an optical frequency comb

Common-Path Dual-Comb Spectroscopy Using a Single Electro-Optic Modulator

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

Contact Info

Product

Resources

About