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, Via Campi Flegrei 34, I-80078 Pozzuoli, NA, Italy; CNR, INO, Largo E Fermi 6, I-50125 Florence, 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 dellŽIstruzione, dellŽUniversita e della Ricerca” (MIUR) for financial support through FIRB Project n. RBFR13QUVI “Optomechanical tailoring of squeezed light.” This work has been partly supported by MIUR Progetto Premiale “QUANTOM-Quantum Opto-Mechanics.”
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: 43
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