Continuous real-time correction and averaging for frequency comb interferometry
Open accessAbstract
Interferograms from a dual-comb spectrometer are continuously corrected and averaged in real-time. The algorithm is implemented on a field-programmable gate array (FPGA) development board. The chosen approach and the algorithm are described. Measurements with high signal-to-noise ratio, resolution and bandwidth are shown to demonstrate the accuracy of the optical referencing and the processing algorithm with 24 hours of averaging time, reaching a signal to noise ratio of 10,750,000 (>21 bits) in the interferogram and 316,000 in the spectrum at 100 MHz resolution. An interferogram where signal dominates the noise over the full delay range imposed by the 100 MHz repetition rate is reported for the first time.
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Recording n∆f_r signal can improve the jitter tracking speed, as reported in dual-comb spectroscopy.
“Recording 𝑛∆𝑓 r signal can improve the speed, as reported in dual-comb spectroscopy [38,39].”
From Jitter correction for asynchronous optical sampling terahertz spectroscopy using free-running pulsed lasers (2023) · cites this paper as [38]
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References 19 · Cited by 245
- Authors
- Roy, J., Deschênes, J.-D., Potvin, S., & Genest, J.
- Affiliations
- Université Laval (CA)
- Venue
- Optics Express
- Publisher
- Optica Publishing Group
- Published
- 2012-09-11
- Volume
- 20
- Issue
- 20
- Pages
- 21932
- ISSN
- 1094-4087 (ISSN-L)
- OpenAlex
- W2114784738
- Cited by
- 245
- References
- 19
- Citations by year
- 2026: 10 · 2025: 16 · 2024: 17 · 2023: 22 · 2022: 15 · 2021: 19 · 2020: 24 · 2019: 23 · 2018: 25 · 2017: 13 · 2016: 28 · 2015: 12 · 2014: 11 · 2013: 9 · 2012: 1
- FWCI
- 5.45
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Optics Express (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Fiber Laser Technologies
- Physical Sciences › Chemistry › Spectroscopy › Spectroscopy and Laser Applications
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Semiconductor Lasers and Optical Devices
- Keywords
- FPGA, signal-to-noise ratio, spectral resolution
- MeSH terms
- Algorithms, Computer Systems, Equipment Design, Interferometry, Signal Processing, Computer-Assisted, Spectrum Analysis, Artifacts, Equipment Failure Analysis
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