Ultra-stable, widely tunable and absolutely linked mid-IR coherent source

Year: 2009

Authors: Galli I., Bartalini S., Cancio P., Giusfredi G., Mazzotti D., De Natale P.

Autors Affiliation: Istituto Nazionale di Ottica Applicata (INOA), CNR, Largo Fermi 6, 50125 Firenze FI, Italy; European Laboratory for Nonlinear Speclroscopy (LENS), Via Carrara 1, 50019 Sesto Fiorentino FI, Italy

Abstract: We report on a new coherent source that, using a phase-lock scheme to an optical frequency-comb synthesizer, achieves a 10-Hz intrinsic linewidth, is tunable from 4 to 4.5 μm with a presettable absolute frequency and, when coupled to a high-finesse cavity, can provide a short-term absorption sensitivity of 1.3 ·10−11cm−1Hz−1/2. These unique spectral features make this source a precise tool for molecular physics.

Journal/Review: OPTICS EXPRESS

Volume: 17 (12)      Pages from: 9582  to: 9587

More Information: We wish to thank L. Lorini (INRIM, Italy) for the calibration of the frequency reference and R. Ballerini (LENS, Italy) for making the cavity. This work was partially supported by Ente Cassa di Risparmio di Firenze. This work, as part of the European Science Foundation EUROCORES Program EUROQUAM-CIGMA, was partially supported by founds from CNR and the other participating national Funding Agencies and the EC Sixth Framework Program.
KeyWords: Optical constants, Absolute frequency; Absorption sensitivity; Coherent sources; High-finesse cavity; Optical frequency combs; Short term; Spectral feature; Widely tunable, Optics, article; computer aided design; equipment; equipment design; illumination; infrared radiation; instrumentation; laser; reproducibility; sensitivity and specificity, Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Infrared Rays; Lasers; Lighting; Reproducibility of Results; Sensitivity and Specificity
DOI: 10.1364/OE.17.009582

Citations: 39
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