Plusquellic, D.
and Stroud, J.
(2026),
Cavity enhanced UV combs generated by sum frequency mixing with near-IR chirped-pulse electro-optic combs for Rb atom sensing at 323 nm, Optics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=961627 (Accessed June 24, 2026)
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Cavity enhanced UV combs generated by sum frequency mixing with near-IR chirped-pulse electro-optic combs for Rb atom sensing at 323 nm
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Abstract
A chirped-pulse electro-optic (EO) dual comb system operating near 816 nm is used to generate dual combs in the UV region near 323 nm. The dual UV combs result from intracavity sum frequency mixing of the non-resonant near-IR combs with a cavity enhanced field at 532 nm in a non-linear crystal. The cavity is pumped with 1 W at 532 nm and seeded with less than 10 mW of dual comb light in the near-IR region to generate a few microwatts of power the UV region. The UV power is readily detectable using an avalanche photodiode and used to measure the high-resolution UV comb spectra of Rb atoms near 323 nm (9 2P3/2←5 2S1/2). The method is easily extendable across the 300 nm to 400 nm region using telecom and near-IR EO-comb sources for seeding.Citation
Optics Letters
Volume
51
Issue
7
Pub Type
Journals
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Keywords
chirped pulse, sum frequency generation, optical frequency combs, ultraviolet
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Created April 1, 2026, Updated June 22, 2026