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We experimentally realize an ultrafast tunable metasurface consisting of subwave-length gallium arsenide nanoparticles supporting Mie-type resonances, which are all-optically tuned by 30 nm in spectral domain under pump fluences as low as < 400 μJ/cm2.
Control of light by an external magnetic field is one of the important methods for modulation of its intensity and polarization. Magneto-optical effects at the nanoscale are usually observed in nanostructured hybrid materials or magnetoplasmonic crystals. In this work, we combine the advantages of all-dielectric resonant nanostructures and magnetic materials for creating compact active magneto-optical...
We characterize the ultrafast nonlinear optical properties of subwavelength silicon nanoparticles with magnetic dipolar response by means of the third-harmonic spectroscopy and pump-probe measurements.
We study the third-harmonic generation from silicon nanodisk quadrumers and demonstrate the substantial enhancement of the harmonic signal near the magnetic Fano resonance, due to an interplay of the individual and collective optically-induced magnetic response.
Third-harmonic generation spectroscopy of silicon oligomers and metasurfaces reveals the nonlinear spectra reshaping with electric and magnetic dipolar Mie-type resonances and up-conversion increase by two orders of magnitude as compared to the bulk silicon.
We characterize experimentally the nonlinear optical response of silicon nanodisk oligomers using third-harmonic generation spectroscopy and reveal the contributions of magnetic and electric dipolar resonances, local field enhancement, and nonlinear interference.
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