Saturated-Absorption Cavity Ring-Down Spectroscopy

G. Giusfredi, S. Bartalini, S. Borri, P. Cancio, I. Galli, D. Mazzotti, and P. De Natale
Phys. Rev. Lett. 104, 110801 – Published 19 March 2010

Abstract

We report on a novel approach to cavity ring-down spectroscopy with the sample gas in saturated-absorption regime. This technique allows us to decouple and simultaneously retrieve the empty-cavity background and absorption signal, by means of a theoretical model that we developed and tested. The high sensitivity and frequency precision for spectroscopic applications are exploited to measure, for the first time, the hyperfine structure of an excited vibrational state of O17C12O16 in natural abundance with an accuracy of a few parts in 1011.

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  • Received 14 October 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.110801

©2010 American Physical Society

Authors & Affiliations

G. Giusfredi, S. Bartalini, S. Borri, P. Cancio, I. Galli, D. Mazzotti*, and P. De Natale

  • Istituto Nazionale di Ottica (INO)-CNR, Largo Fermi 6, 50125 Firenze FI, Italy and European Laboratory for Nonlinear Spectroscopy (LENS), Via Carrara 1, 50019 Sesto Fiorentino FI, Italy

  • *davide.mazzotti@ino.it

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Issue

Vol. 104, Iss. 11 — 19 March 2010

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