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Cited by 105Spectroscopy and Laser ApplicationsAdvanced Fiber Laser TechnologiesLaser Design and Applications

Dual electro-optic optical frequency combs for multiheterodyne molecular dispersion spectroscopy

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Martín-Mateos, Pedro, Jerez, Borja, Acedo, Pablo·2015·Optics Express
DOI 10.1364/oe.23.021149
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Abstract

In this paper, a multiheterodyne architecture for molecular dispersion spectroscopy based on a coherent dual-comb source generated using a single continuous wave laser and electro-optic modulators is presented and validated. The phase-sensitive scheme greatly simplifies previous dual-comb implementations by the use of an electro-optic dual comb and by phase-locking all the signal generators of the setup eliminating, in this way, the necessity of any reference optical path currently mandatory in absorption-based instruments. The architecture is immune to the classical baseline and normalization problems of absorption-based analyzers and provides an output linearly dependent on the gas concentration. In addition, the simultaneous parallel multi-wavelength measurement approach has the ability to deliver an improved output bandwidth (measurement speed) over gas analyzers based on tunable lasers.

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  • By using the intervals and phases of the IFG, the jitters at the entire time window between the triggers can be corrected using software algorithms, as previously studied in dual-comb spectroscopy.

    “By using the intervals and phases of the IFG, the jitters at the entire time window between the triggers can be corrected using software algorithms, as previously studied in the scheme of dual-comb spectroscopy [33-36].”

    From Jitter correction for asynchronous optical sampling terahertz spectroscopy using free-running pulsed lasers (2023) · cites this paper as [34]

    Section 2.2 (p. 6) describes maintaining phase coherence by phase-locking the oscillators, and Section 3 (p. 8) describes software-based phase measurement. Neither describes using interferogram intervals and phases to correct jitter throughout the time window between triggers. Searches for interferogram timing and software jitter correction found no passage addressing that claim. (LLM, conf=0.76)

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References 32 · Cited by 105

Research works printed but not linked: 30

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Authors
Martín-Mateos, P., Jerez, B., & Acedo, P.
Affiliations
Universidad Carlos III de Madrid (ES)
ORCID
Venue
Optics Express
Publisher
Optica Publishing Group
Published
2015-08-04
Volume
23
Issue
16
Pages
21149
ISSN
1094-4087 (ISSN-L)
DOI
10.1364/oe.23.021149
OpenAlex
W2466950167
Cited by
105
References
32
Citations by year
2026: 2 · 2025: 3 · 2024: 5 · 2023: 10 · 2022: 9 · 2021: 9 · 2020: 15 · 2019: 9 · 2018: 15 · 2017: 12 · 2016: 15 · 2015: 1
FWCI
6.38
Type
journal article
Language
en
Open access
Licence
Locations
  • Optics Express (publishedVersion)
  • PubMed (publishedVersion)
  • e-Archivo (Carlos III University of Madrid) (submittedVersion, other-oa)
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Spectroscopy and Laser Applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Fiber Laser Technologies
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Laser Design and Applications
Keywords
dual-comb spectroscopy, electro-optic modulator, phase-sensitive detection, phase locking, gas concentration measurement, multi-wavelength measurement, continuous-wave laser, optical frequency combs

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