Scientific Results

Direct generation of optical frequency combs in chi((2)) nonlinear cavities

Year: 2016

Authors: Mosca S., Ricciardi I., Parisi M., Maddaloni P., Santamaria L., De Natale P., De Rosa M.

Autors Affiliation: CNR-INO, Istituto Nazionale di Ottica, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
CNR-INO, Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: Quadratic nonlinear processes are currently exploited for frequency comb transfer and extension from the visible and near infrared regions to other spectral ranges where direct comb generation cannot be accomplished. However, frequency comb generation has been directly observed in continuously pumped quadratic nonlinear crystals placed inside an optical cavity. At the same time, an introductory theoretical description of the phenomenon has been provided, showing a remarkable analogy with the dynamics of third-order Kerr microresonators. Here, we give an overview of our recent work on chi((2)) frequency comb generation. Furthermore, we generalize the preliminary three-wave spectral model to a many-mode comb and present a stability analysis of different cavity field regimes. Although our work is a very early stage, it lays the groundwork for a novel class of highly efficient and versatile frequency comb synthesizers based on second-order nonlinear materials.

Journal/Review: NANOPHOTONICS

Volume: 5 (2)      Pages from: 316  to: 331

More Information: We thank Miro Erkintalo, Tobias Hansson, Francois Leo, and Stefan Wabnitz for stimulating discussions. S. M. acknowledges the Italian “Ministero dell
KeyWords: Second harmonic generation; Harmonic generation; Infrared devices; Natural frequencies; Optical frequency conversion; Optical materials, Direct generation; Nonlinear cavities; Nonlinear crystals; Nonlinear materials; Nonlinear process; Optical frequency combs; Spectral modeling; Visible and near infrared, Nonlinear optics
DOI: 10.1515/nanoph-2016-0023

Citations: 15
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