title: Ultra-stable, widely tunable and absolutely linked mid-IR coherent source.
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 microm with a presettable absolute frequency and, when coupled to a high-finesse cavity, can provide a short-term absorption sensitivity of 1.3 x 10(-11) cm(-1)Hz,(-1/2). These unique spectral features make this source a precise tool for molecular physics.
authors.affiliation: Istituto Nazionale di Ottica Applicata- CNR, Firenze, FI, Italy.
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: G
authors.initials: G
authors.lastname: Giusfredi
authors.forename: D
authors.initials: D
authors.lastname: Mazzotti
authors.forename: P
authors.initials: P
authors.lastname: De Natale
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007259:Infrared Rays; D007834:Lasers; D008029:Lighting / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity