title: Mid-infrared frequency comb for broadband high precision and sensitivity molecular spectroscopy.
abstract: We report on the experimental demonstration of the metrological and spectroscopic performances of a mid-infrared comb generated by a nonlinear downconversion process from a Ti:sapphire-based near-infrared comb. A quantum cascade laser at 4330 nm was phase-locked to a single tooth of this mid-infrared comb and its frequency-noise power spectral density was measured. The mid-infrared comb itself was also used as a multifrequency highly coherent source to perform ambient air direct comb spectroscopy with the Vernier technique, by demultiplexing it with a high-finesse Fabry-Perot cavity.
authors.forename: I
authors.initials: I
authors.lastname: Galli
authors.forename: S
authors.initials: S
authors.lastname: Bartalini
authors.forename: P
authors.initials: P
authors.lastname: Cancio
authors.forename: F
authors.initials: F
authors.lastname: Cappelli
authors.forename: G
authors.initials: G
authors.lastname: Giusfredi
authors.forename: D
authors.initials: D
authors.lastname: Mazzotti
authors.forename: N
authors.initials: N
authors.lastname: Akikusa
authors.forename: M
authors.initials: M
authors.lastname: Yamanishi
authors.forename: P
authors.initials: P
authors.lastname: De Natale