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Analysis and magnetic modulation of chiro-optical properties in anisotropic chiral and magneto-chiral plasmonic systems

AuthorsFeng, Hua Yu; Dios, Carolina de; García-Pérez, Fernando ; Cebollada, Alfonso ; Armelles Reig, Gaspar
Issue Date11-Dec-2017
PublisherOptical Society of America
CitationOptics Express 25(25): 31045-31055 (2017)
AbstractWe present a systematic study to separate the different contributions to the dichroic response of complex plasmonic split-ring/ring magneto-chiral systems. For this, we first construct metastructures with plasmonic, chiral and magneto-optical functionalities by specific arrangements of different building blocks, each of them responsible for one of the functionalities. Then, by the use of Mueller matrices in forward/backward spectroscopic measurements under magnetic field, we separate optical anisotropy from pure chiral contributions to the overall dichroic response of the system. This allows determining the pure chiral response of the structures and the corresponding magnetic field modulation mediated by the magneto-optical effect present in the corresponding building block, which reaches values of 25% at 740 nm. This fabrication and characterization procedure, assigning the different optical functionalities to different building blocks, and decomposing the different contributions to the global optical response, allows an easy and rational identification of the different phenomena exhibited by the magneto-chiral system.
Publisher version (URL)https://doi.org/10.1364/OE.25.031045
Appears in Collections:(IMN-CNM) Artículos
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