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We design tailored artificial optical gauge fields with ordinary dielectric birefringent materials. Using this method, we realize a wide range of phenomena: Quantum Hall effect, Haldane Topological-Insulators, Rashba effect and more.
Rectangular arrays of pyramidal recesses coated by silver film are investigated by means of polarization‐resolved nonlinear microscopy at 900 nm fundamental wavelength, demonstrating strong dependence of the dipole‐allowed SHG upon the lattice parameters. The plasmonic band gap causes nearly complete SHG suppression in arrays of 650 nm periodicity, whereas a sharp resonance at 550 nm periodicity is...
We present results related to the determination of third-order nonlinear optical (NLO) properties of three organic semiconductors (OSCs) with a π-conjugated terthiophene (3Th) core and symmetrically or asymmetrically end-capped with specific terminals. The spectral dependences of the real and imaginary part of the cubic hyperpolarizability γ were obtained from Z-scan studies in the 600–1200nm range...
Shape and size resonant plasmonic enhancement of Second Harmonic Generation (SHG) from individual and coupled nanoholes in thin metal films is studied, and giant signals are observed from individual hot spots.
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