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Three and Four-Modes Parametric Processes in Hexagonally Poled Nonlinear Photonic Crystals
Univ Insubria, Dept Sci & High Technol, Via Valleggio 11, I-22100 Como, Italy..
CNR, Ist Foton & Nanotecnol, Udr Como, Via Valleggio 11, I-22100 Como, Italy..
KTH, School of Engineering Sciences (SCI), Applied Physics, Quantum and Biophotonics. (Nonlinear and Quantum Photonics)ORCID iD: 0000-0001-7185-0457
Vilnius Univ, Dept Quantum Elect, Sauletekio 10, LT-10223 Vilnius, Lithuania..
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2018 (English)In: OPTICS, PHOTONICS AND LASERS / [ed] Yurish, S Y, INT FREQUENCY SENSOR ASSOC-IFSA , 2018, p. 176-178Conference paper, Published paper (Refereed)
Abstract [en]

We investigate the properties of the field emitted through parametric down-conversion (PDC) in a nonlinear photonics crystal (NPC) with a hexagonal poling pattern, both from a theoretical point of view and with an experiment performed at the University of Insubria. Considering the high gain regime of PDC, we demonstrate the existence of concurrent PDC processes mediated by two noncollinear poling vectors which are coherently coupled and reciprocally stimulated. We find that these non-standard 3-mode and 4-mode interaction processes undergo a substantial enhancement of the parametric gain with respect to the usual 2-mode PDC, and give rise to hot spots order of magnitudes brighter than standard 2-mode fluorescence which have been observed in the source far field. We performed a complete characterization of the source spectral-angular emission, finding a very good agreement between the experiment and the theoretical predictions.

Place, publisher, year, edition, pages
INT FREQUENCY SENSOR ASSOC-IFSA , 2018. p. 176-178
Keywords [en]
Nonlinear optics, Nonlinear photonics crystals, Parametric down-conversion
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-241234ISI: 000454436200051OAI: oai:DiVA.org:kth-241234DiVA, id: diva2:1279521
Conference
1st International Conference on Optics, Photonics and Lasers (OPAL' 2018) 9-11 May 2018, Barcelona, Spain
Note

QC 20190116

Available from: 2019-01-16 Created: 2019-01-16 Last updated: 2019-01-23Bibliographically approved

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Gallo, Katia

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