Scientific Results

Doppler-free polarization spectroscopy with a quantum cascade laser at 4.3 mu m

Year: 2009

Authors: Bartalini S., Borri S., De Natale P.

Autors Affiliation: Istituto Nazionale di Ottica Applicata (INOA) – CNR Largo Fermi 6, I-50125 Firenze, Italy;
European Laboratory for Non-linear Spectroscopy (LENS) Via Carrara 1, I-50019 Sesto Fiorentino (Firenze), Italy

Abstract: We report on what we believe to be the first Doppler-free polarization spectroscopy with a quantum cascade laser. A hot-band CO2 transition around 4.3 mu m wavelength has been used to test the potential of the technique for high-resolution spectroscopy and wide-bandwidth quantum cascade laser frequency stabilization. (c) 2009 Optical Society of America

Journal/Review: OPTICS EXPRESS

Volume: 17 (9)      Pages from: 7440  to: 7449

More Information: The authors are grateful to Pablo Cancio, Giovanni Giusfredi, Davide Mazzotti, Iacopo Galli and Livio Gianfrani for the useful discussions and suggestions. We thank Livio Gianfrani also for lending us the QC laser. A special thank goes to the LENS electronic staff, in particular to Alessio Montori, for the valuable help in designing and fabricating the electronics used in the experiment. This work, as part of the European Science Foundation EUROCORES Program EUROQUAM-CIGMA, was partially supported by funds from CNR and the other participating national Funding Agencies and the EC Sixth Framework Program.
KeyWords: Carbon dioxide; Frequency stability; Polarization; Semiconductor lasers; Spectroscopic analysis; Spectroscopy, Doppler; High-resolution spectroscopy; Hot band; Polarization spectroscopy; Wide bandwidth, Quantum cascade lasers, article; computer aided design; equipment; equipment design; instrumentation; laser; methodology; refractometry; reproducibility; sensitivity and specificity; spectroscopy, Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Lasers; Refractometry; Reproducibility of Results; Sensitivity and Specificity; Spectrum Analysis
DOI: 10.1364/OE.17.007440

Citations: 22
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