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Article Dans Une Revue Journal of Molecular Spectroscopy Année : 2008

HCOOH high-resolution spectroscopy in the 9.18 µm region

Résumé

We report on highly accurate absolute frequency measurement against a femtosecond frequency comb of six saturated absorption lines of formic acid (HCOOH) with an accuracy of 1 kHz. We also report the frequency measurement of 17 other lines with an accuracy of 2 kHz. Those lines are in quasi coincidence with the 9R(36) to 9R(42) CO2 laser emission lines and are probed either by a CO2 or a widely tunable quantum cascade laser phase locked to a master CO2 laser. The stability of HCOOH stabilized lasers is characterized by a fractional Allan deviation of 3.1 × 10−12 τ−1/2. They give suitable frequency references for H2+ Doppler-free two-photon spectroscopy.
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Dates et versions

hal-03151481 , version 1 (24-02-2021)

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Franck Bielsa, Khelifa Djerroud, Andrei Goncharov, Albane Douillet, Tristan Valenzuela, et al.. HCOOH high-resolution spectroscopy in the 9.18 µm region. Journal of Molecular Spectroscopy, 2008, 247 (1), pp.41-46. ⟨10.1016/j.jms.2007.10.003⟩. ⟨hal-03151481⟩
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