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Article Dans Une Revue EPJ Web of Conferences Année : 2023

Dual-comb interferometry using frequency shifting loops

Résumé

Dual-comb systems have demonstrated their potential for metrology, e.g. spectroscopy vibrometry or ranging [1], However, the implementation of dual-combs is often complex and generally requires substantial optical optoelectronic hardware Here, we propose a simple compact architecture based on bidirectional frequency shifting loop, that provides more than I 00 mutually coherent comb lines The system makes use ofa CW laser slow electronic detection chain (10 MSa/s) We implemented two configurations enabling dynamic multi-heterodyne interferometry at 20kHz: first one acousto-optic shifters, allows highly sensitive distributed acoustic sensing along fiber, second involves electro-optic enables with sub-mm resolution.
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Dates et versions

hal-04265073 , version 1 (30-10-2023)

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Louis Alliot de Borggrae, Hugues Guillet de Chatellus. Dual-comb interferometry using frequency shifting loops. EPJ Web of Conferences, 2023, 287, pp.07018-07018. ⟨10.1051/epjconf/202328707018⟩. ⟨hal-04265073⟩
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