Scientific Results

Mid-infrared frequency synthesizers: novel precise rulers for molecular spectroscopy

Year: 2007

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

Autors Affiliation: Consiglio Nazionale Delle Ricerche, Istituto Nazionale di Ottica Applicata, Comprensorio A. Olivetti, Via Campi Flegrei 34, 80078 Pozzuoli (Naples), Italy CORRESPONDENCE ADDRESS: Maddaloni, P.; Consiglio Nazionale Delle Ricerche, Istituto Nazionale di Ottica Applicata, Comprensorio A. Olivetti, Via Campi Flegrei 34, 80078 Pozzuoli (Naples), Italy CONFERENCE NAME: 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, CLEO CONFERENCE DATE: 17 June 2007 through 22 June 2007 CONFERENCE LOCATION: Munich CONFERENCE CODE: 73192 ISBN: 1424409306; 9781424409303 CODEN: 85PNA LANGUAGE OF ORIGINAL DOCUMENT: English ABBREVIATED SOURCE TITLE: Conf Lasers Electro Opt Eur Tech Dig DOCUMENT TYPE: Conference Paper PUBLICATION STAGE: Final

Abstract: In this work, we demonstrate a mid-IR frequency comb based on a difference-frequency-generation (DFG) process, which takes place in a periodically-poled lithium niobate (PPLN) crystal between a continuous-wave (CW) laser source and a near-IR, fiber-based optical frequency synthesizers (OFS). Then, in order to demonstrate that the generated comb can be properly used as a direct frequency ruler, an external CW DFG source is phase-locked to the closest mid-IR comb tooth and used for high-precision molecular spectroscopy.

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KeyWords: Spectroscopy; Optical parametric oscillators: Dual-comb spectroscopy

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