Scientific Results

Shaping the spectrum of a down-converted mid-infrared frequency comb

Year: 2017

Authors: Campo G., Leshem A., Cappelli F., Galli I., Cancio P., Arie A., De Natale P., Mazzotti D.

Autors Affiliation: Istituto Nazionale di Ottica (INO)—CNR and European Laboratory for Nonlinear Spectroscopy (LENS), Via Carrara 1,
50019 Sesto Fiorentino FI, Italy; School of Electrical Engineering, Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel

Abstract: New methods to frequency down-convert a broadband near infrared frequency comb into the mid-infrared by three-wave mixing are studied. Modulation of the second-order nonlinear coefficient based on the concepts of either nonlinear spectral holography or quasi-periodic modulation enables us to obtain different spectral shapes of the mid-infrared comb. It includes flat and broadband single-band or dual-band spectra, or a shape that exhibits two or even three sharp peaks at chosen frequencies. The methods we present can be used to tailor the frequency comb spectra to selected molecular absorption lines in the mid-infrared. (C) 2017 Optical Society of America

Journal/Review: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B: OPTICAL PHYSICS

Volume: 34 (11)      Pages from: 2287  to: 2294

More Information: Funding: EU Horizon 2020 Framework Programme (H2020), Laserlab-Europe (654148); Israeli Ministry of Science, Technology and Space, in the framework of the Israel–Italy bi-national collaboration program; Italian Ministry of Foreign Affairs and International Cooperation— “Broadcon” Italy-Israel bilateral project; ESFRI Roadmap— Extreme Light Infrastructure (ELI) project; NOICE—joint lab between INO-CNR and Tel Aviv University.
KeyWords: Modulation, Frequency combs; Mid-infrared frequency combs; Molecular absorption lines; Near Infrared; Nonlinear coefficient; Quasiperiodic modulations; Spectral shapes; Three wave mixing, Infrared devices
DOI: 10.1364/JOSAB.34.002287

Citations: 1
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