All-fiber frequency agile triple-frequency comb light source

Eve-Line Bancel, Etienne Genier, Rosa Santagata, Matteo Conforti, Alexandre Kudlinski, Géraud Bouwmans, Olivier Vanvcincq, Damien Labat, Andy Cassez and Arnaud Mussot ()
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Eve-Line Bancel: Univ. Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers Atomes et Molécules
Etienne Genier: Univ. Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers Atomes et Molécules
Rosa Santagata: ONERA
Matteo Conforti: Univ. Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers Atomes et Molécules
Alexandre Kudlinski: Univ. Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers Atomes et Molécules
Géraud Bouwmans: Univ. Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers Atomes et Molécules
Olivier Vanvcincq: Univ. Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers Atomes et Molécules
Damien Labat: Univ. Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers Atomes et Molécules
Andy Cassez: Univ. Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers Atomes et Molécules
Arnaud Mussot: Univ. Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers Atomes et Molécules

Nature Communications, 2023, vol. 14, issue 1, 1-7

Abstract: Abstract Tricomb spectroscopy unveils a new dimension to standard linear and nonlinear spectroscopic analysis, offering the possibility to reveal the almost real-time evolution of complex systems with unprecedented accuracy. Current triple comb configurations are based on the use of mode-locked lasers, which impose constraints on the comb parameters, and require complex electronic synchronization, thus limiting potential applications. In this paper, we present the experimental demonstration of a new type of all-fiber, self-phase-locked, frequency-agile tri-comb light source. It is based on the nonlinear spectral broadening of three electro-optic modulator-based frequency combs in a three-core fiber. The exploitation of spatial multiplexing of light in optical fibers offers new possibilities to generate broadband-frequency combs that are highly coherent with each other. After characterizing the stability of the source and performing several dual-comb test measurements, we revealed the high mutual coherence between the three combs through the demonstration of a 2-D pump-probe four-wave mixing spectroscopy experiment.

Date: 2023
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DOI: 10.1038/s41467-023-43734-w

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