Low-power Lamb-dip spectroscopy of very weak CO2 transitions near 4.25 mu m

Year: 2002

Authors: Mazzotti D., Borri S., Cancio P., Giusfredi G., De Natale P.

Autors Affiliation: Istituto Nazionale di Ottica Applicata (INOA)
European Laboratory for Non-linear Spectroscopy (LENS)
Istituto Nazionale di Fisica della Materia (INFM)
Department of Physics, University of Firenze

Abstract: We report saturated-absorption spectra recorded by use of 5 muW of infrared radiation coupled into a build-up cavity. Single-pass generation of difference-frequency radiation tunable near 4.25 mum in a periodically poled LiNbO3 crystal was used. Lamb dips of weak transitions of the fundamental rovibrational band of CO2 were observed, for what is believed to be the first time, up to the J = 82 level. Application of these results to the extension of frequency-comb-based metrology in the infrared is discussed. (C) 2002 Optical Society of America.

Journal/Review: OPTICS LETTERS

Volume: 27 (14)      Pages from: 1256  to: 1258

KeyWords: Absorption spectroscopy; Band structure; Carbon dioxide; Electron transitions; Frequencies; Infrared radiation; Spectrum analysis, Rovibrational bands, Light absorption
DOI: 10.1364/OL.27.001256

Citations: 23
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