Chang, K.
, Lesko, D.
, Mashburn, C.
, Chang, P.
, Tsao, E.
, Lind, A.
and Diddams, S.
(2024),
Multi-harmonic near-infrared–ultraviolet dual-comb spectrometer, Optics Letters, [online], https://doi.org/10.1364/OL.515776, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=956697
(Accessed December 11, 2024)
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Multi-harmonic near-infrared–ultraviolet dual-comb spectrometer
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, Daniel Lesko, , , , ,
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.Citation
Optics Letters
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Created March 19, 2024, Updated June 7, 2024