Molecular frequency reference at 1.56  μm using a 12 C 16 O overtone transition with the noise-immune cavity-enhanced optical heterodyne molecular spectroscopy method

We report on a molecular clock based on the interrogation of the 3ν rotational-vibrational combination band at 1563 nm of carbon monoxide C 12O. The laser stabilization scheme is based on the noise-immune cavity-enhanced optical heterodyne molecular spectroscopy (NICE-OHMS) technique in frequency mo...

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Bibliographic Details
Published inOptics letters Vol. 41; no. 10; p. 2189
Main Authors Saraf, Shailendhar, Berceau, Paul, Stochino, Alberto, Byer, Robert, Lipa, John
Format Journal Article
LanguageEnglish
Published United States 15.05.2016
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Summary:We report on a molecular clock based on the interrogation of the 3ν rotational-vibrational combination band at 1563 nm of carbon monoxide C 12O. 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 at 1 s that improves to ∼3.5×10 with 1000 s of averaging.
ISSN:1539-4794