Direct-frequency-comb spectroscopy by a scanning Fabry-Pérot microcavity resonator

Edoardo Vicentini, Alessio Gambetta, Nicola Coluccelli, Yuchen Wang, Paolo Laporta, Gianluca Galzerano*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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We present a direct-frequency-comb spectroscopy method able to resolve the spectral comb structure with an instrumental frequency resolution limited only by the coherence properties of the comb source itself. The proposed technique, based on a 50 000-finesse scanning Fabry-Pérot microcavity resonator combined with a low-resolution diffraction grating, is characterized using a 250-MHz Er-fiber frequency comb demonstrating an ultimate frequency resolution as low as 50 kHz over an optical bandwidth up to 4 THz and with tens-of- milliseconds measurement times.
Original languageEnglish
Article number033510
Pages (from-to)033510
Number of pages7
JournalPhysical Review A
Issue number3
Publication statusPublished - 11 Sep 2020
MoE publication typeA1 Journal article-refereed


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