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Observation of the nonlinear Wood's anomaly on periodic arrays of nickel nanodimers
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
Le Mans Univ, Inst Mol & Mat Mans, UMR CNRS 6283, F-72085 Le Mans, France.
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2018 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 98, no 24, article id 245425Article in journal (Refereed) Published
Abstract [en]

Linear and nonlinear magnetophotonic properties of periodic arrays of nickel nanodimers are governed by the interplay of the (local) optical response of individual nanoparticles and (nonlocal) diffraction phenomena. The redistribution of light intensity between diffracted beams when a diffraction order onsets or disappears is known as Wood's anomaly. Here, angular and magnetic-field-dependent near-infrared spectroscopic measurements, performed for different optical wavelengths and grating constants, discriminate between the linear and nonlinear excitation mechanisms of Wood's anomalies. In the nonlinear regime, evidenced by the magnetic second-harmonic generation, Wood's anomaly is characterized by an order-of-magnitude larger effect in intensity redistribution between the diffracted beams as compared to the linear case. The nonlinear Wood's anomaly manifests itself also in the nonlinear magnetic contrast highlighting the prospects of nonlinear magnetophotonics.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2018. Vol. 98, no 24, article id 245425
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-373318DOI: 10.1103/PhysRevB.98.245425ISI: 000454632700005OAI: oai:DiVA.org:uu-373318DiVA, id: diva2:1279049
Funder
Knut and Alice Wallenberg Foundation, 2015.0060German Research Foundation (DFG), AL2143/2-1EU, Horizon 2020, 737093Available from: 2019-01-15 Created: 2019-01-15 Last updated: 2019-01-15Bibliographically approved

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Chioar, Ioan-AugustinKapaklis, Vassilios

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