Accéder directement au contenu Accéder directement à la navigation
Nouvelle interface
Article dans une revue

Dipole Saturated Absorption Modeling in Frequency Modulation Spectroscopy: Dealing with a Gaussian Beam, Resonance Narrowing

Abstract : Quantitative, nonlinear sub-Doppler sensitive spectroscopy requires reliable formalism for optimizing the detection of weak molecular absorption patterns. Phase modulation spectroscopy (FMS) is a common technique usedto challenge the ultimate photon-shot-noise limit. In addition, nonlinear spectroscopy can exhibit surprising effects like resonance narrowing, i.e., resonance width below the transit-time rate, like it has been pointed out in the seventies. Here, by extending our previous work, we propose an analytical development associated with numerical integration to simulate the equivalent Lamb-dip under Gaussian beam conditions. Simulations of nonlinear profiles of two transitions belonging to the polyad ∆P 11 of acetylene are discussed, and analyzed by fitting with standard functions. The respective roles of the transit-time, of the collision rate, and of the Rabi frequency (including the power broadening) are carefully discussed and reviewed. It shows “super-narrowing” effects under specific low pressure and low power conditions. A reviewing introduction states previous experimental reports as well about previous modeling.
Type de document :
Article dans une revue
Liste complète des métadonnées

Littérature citée [89 références]  Voir  Masquer  Télécharger

https://hal-univ-bourgogne.archives-ouvertes.fr/hal-02356399
Contributeur : Patrick Dupre Connectez-vous pour contacter le contributeur
Soumis le : vendredi 8 novembre 2019 - 17:01:35
Dernière modification le : lundi 29 août 2022 - 10:12:25
Archivage à long terme le : : lundi 10 février 2020 - 05:28:02

Fichier

Formalism_FM_accepted2.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Patrick Dupré. Dipole Saturated Absorption Modeling in Frequency Modulation Spectroscopy: Dealing with a Gaussian Beam, Resonance Narrowing. Journal of Quantitative Spectroscopy and Radiative Transfer, 2019, 232, pp.126-145. ⟨10.1016/j.jqsrt.2019.04.015⟩. ⟨hal-02356399⟩

Partager

Métriques

Consultations de la notice

45

Téléchargements de fichiers

123