Abstract

Dual-comb spectroscopy in the ultraviolet (UV) and visible would enable broad bandwidth electronic spectroscopy with unprecedented frequency resolution. However, there are significant challenges in generation, detection, and processing of dual-comb data that have restricted its progress in this spectral region. In this work, we leverage robust 1550 nm few-cycle pulses to generate frequency combs in the UV–visible. We combine these combs with a wavelength multiplexed dual-comb spectrometer and simultaneously retrieve 100 MHz comb-mode-resolved spectra over three distinct harmonics at 386, 500, and 760 nm. The experiments highlight the path to continuous dual-comb coverage spanning 200–750 nm, offering extensive access to electronic transitions in atoms, molecules, and solids.

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Broadband near-ultraviolet dual comb spectroscopy

Lukas Fürst, Adrian Kirchner, Alexander Eber, Florian Siegrist, Robert di Vora, and Birgitta Bernhardt
Optica 11(4) 471-477 (2024)

Dual-comb spectroscopy in the deep ultraviolet

John J. McCauley, Mark C. Phillips, Reagan R. D. Weeks, Yu Zhang, Sivanandan S. Harilal, and R. Jason Jones
Optica 11(4) 460-463 (2024)

Broadband, high-power optical frequency combs covering visible to near-infrared spectral range

Haochen Tian, Ruichen Zhu, Runmin Li, Sida Xing, Thomas R. Schibli, and Kaoru Minoshima
Opt. Lett. 49(3) 538-541 (2024)

Fast rate dual-comb spectrometer in the water-transparent 7.5–11.5 µm region

Luca Moretti, Mathieu Walsh, Nawaf Abualsaud, Davide Gatti, Marco Lamperti, Jérome Genest, Aamir Farooq, and Marco Marangoni
Opt. Lett. 49(7) 1844-1847 (2024)

Ultraviolet dual comb spectroscopy: a roadmap

Vittoria Schuster, Chang Liu, Robert Klas, Pablo Dominguez, Jan Rothhardt, Jens Limpert, and Birgitta Bernhardt
Opt. Express 29(14) 21859-21875 (2021)