Cavity-enhanced frequency comb spectroscopy in a supersonic jet - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Cavity-enhanced frequency comb spectroscopy in a supersonic jet

Résumé

Reaching low temperatures is of great interest for precision spectroscopy, as it simplifies rovibrationnal spectra of large molecules. Efficient cooling can be achieved via the supersonic expansion of a gas through a nozzle, which can be probed using cavity-enhanced spectroscopy [4]. The comb filtered by the cavity had a frep= 707MHz, and two-burst interferograms were acquired, yielding comb mode resolution [4]. A mixture of 90% Ar and 10% C2H2 was expanded from a reservoir at 16 Torr into a chamber at 0.35 Torr through an aerospike nozzle. The isentropic core of the resulting supersonic jet exhibited a rotational temperature of 140 K and was surrounded by shear layers and residual gas at room temperature.
Fichier non déposé

Dates et versions

hal-04246135 , version 1 (17-10-2023)

Identifiants

  • HAL Id : hal-04246135 , version 1

Citer

Romain Dubroeucq, Quentin Le Mignon, Nicolas Suas-David, Nicolas Suas-David, Samir Kassi, et al.. Cavity-enhanced frequency comb spectroscopy in a supersonic jet. Conference on Lasers and Electro-Optics/Europe and European Quantum Electronics Conference, Jun 2023, Munich (Allemagne), Germany. paper ed_2_3. ⟨hal-04246135⟩
22 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More