Comb-assisted cavity ring-down spectroscopy of a buffer-gas-cooled molecular beam
Authors: Santamaria L., Di Sarno V., De Natale P, De Rosa M., Inguscio M., Mosca S., Ricciardi I., Calonico D.,
Levi F., Maddaloni P.
Autors Affiliation: CNR-INO, Istituto Nazionale di Ottica, Via Campi Flegrei 34, Pozzuoli, 80078, Italy; INFN, Istituto Nazionale di Fisica Nucleare Sez. di Napoli Complesso, Universitario di M.S. Angelo, Via Cintia, Napoli, 80126, Italy; CNR-INO Largo Fermi 6, Firenze, 50125, Italy; INFN, Istituto Nazionale di Fisica, Sez. di Firenze Via G. Sansone 1, Sesto Fiorentino, 50019, Italy; INRIM, Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, Torino, 10135, Italy
Abstract: We demonstrate continuous-wave cavity ring-down spectroscopy of a partially hydrodynamic molecular beam emerging from a buffer-gas-cooling source. Specifically, the (n1 + n3) vibrational overtone band of acetylene (C2H2) around 1.5 mm is accessed using a narrow-linewidth diode laser stabilized against a GPS-disciplined rubidium clock via an optical frequency comb synthesizer. As an example, the absolute frequency of the R(1) component is measured with a fractional accuracy of B1 109. Our approach represents the first step towards the extension of more sophisticated cavity-enhanced interrogation schemes, including saturated absorption cavity ring-down or two-photon excitation, to buffer-gascooled
Journal/Review: PHYSICAL CHEMISTRY CHEMICAL PHYSICS (PRINT)
Volume: 18 (25) Pages from: 16715 to: 16720
More Information: The authors acknowledge technical support by G. Notariale and fruitful discussions with G. Santambrogio. This work was funded by MIUR-FIRB project RBFR1006TZ and by INFN project SUPREMO.KeyWords: Buffer gas cooling; Cavity ring-down spectroscopyDOI: 10.1039/c6cp02163hCitations: 22data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-09-24References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here