title: Molecular frequency reference at 1.56  μm using a12C16O overtone transition with the noise-immune cavity-enhanced optical heterodyne molecular spectroscopy method.
abstract: We report on a molecular clock based on the interrogation of the 3ν rotational-vibrational combination band at 1563 nm of carbon monoxide C1612O. The laser stabilization scheme is based on the noise-immune cavity-enhanced optical heterodyne molecular spectroscopy (NICE-OHMS) technique in frequency modulation (FM) saturation spectroscopy. We use a high-finesse ultra-low expansion (ULE) glass optical cavity with CO as the molecular reference for long-term stabilization of the cavity resonance. We report an Allan deviation of 1.8×10-12at 1 s that improves to ∼3.5×10-14with 1000 s of averaging.
authors.forename: Shailendhar
authors.initials: S
authors.lastname: Saraf
authors.forename: Paul
authors.initials: P
authors.lastname: Berceau
authors.forename: Alberto
authors.initials: A
authors.lastname: Stochino
authors.forename: Robert
authors.initials: R
authors.lastname: Byer
authors.forename: John
authors.initials: J
authors.lastname: Lipa