Scientific Results

Simulation of Dicke-narrowed molecular spectra recorded by off-axis high-finesse optical cavities

Year: 2010

Authors: Maddaloni P., Malara P., De Natale P.

Autors Affiliation: CNR – Istituto Nazionale di Ottica Applicata, and European Laboratory for Nonlinear Spectroscopy (LENS) Comprensorio “A. Olivetti”, 80078 Pozzuoli (Naples), Italy

Abstract: Simulations of molecular spectral profiles recorded in the Dicke narrowing regime by off-axis high-finesse optical cavities are presented. The influence of experimental parameters on the transmitted lineshapes is investigated on the basis of a model that takes into account the effect of the cavity transfer function. In particular, the collisional narrowing pressure range is found to shrink until disappearance as the molecular absorption increases. It is also shown that fitting the measured lineshapes with a pure Galatry function, i.e. neglecting instrumental effects, may lead to discrepancies of several tens percent in the extracted line parameters.

Journal/Review: MOLECULAR PHYSICS

Volume: 108 (6)      Pages from: 749  to: 755

KeyWords: Collisional narrowing; Dicke narrowing; Experimental parameters; Line parameters; Line shape; Molecular absorption; Molecular spectra; Off-axis; Optical cavities; Pressure ranges; Spectral profile, Mass spectrometry, Molecular spectroscopy
DOI: 10.1080/00268971003601571

Citations: 2
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