Anodic aluminum oxide based photonic crystals with periodic porous structure have been prepared using voltage compensation method. The as-prepared sample showed an ultra-narrow photonic bandgap. Asymmetric line-shape profiles of the photonic bandgaps have been observed, which is attributed to Fano resonance between the photonic bandgap state of photonic crystal and continuum scattering state of...

M. Belmeguenai,1,2 F. Zighem,1 Y. Roussigné,1 S-M. Chérif,1 P. Moch,1 K. Westerholt,3 G. Woltersdorf,2 and G. Bayreuther2 1LPMTM, Institut Galilée, UPR 9001 CNRS, Université Paris 13, 99 Avenue Jean-Baptiste Clément, F-93430 Villetaneuse, France 2Institut für Experimentelle Physik, Universität Regensburg, Universitätsstraße 31, 93040 Regensburg, Germany 3Institut für Experimentelle Physik/Festk...

Resonant classical light scattering by impurity atoms inside dielectric cubic lattices is investigated in the point-dipole limit. Modifications to resonance frequencies and linewidths are shown to be different for substitutional and interstitial impurities. Spontaneous emission rates inside dielectrics exhibit the well-known empty-cavity and Lorentz local-field factors for substitutional and in...

-The author reviews experimental techniques which use the properties of the scattering of light by free atoms in the neighborhood of a resonant frequency for invest~gation of excited atomic energy levels : Hanle effect and its recent developments : (Hanle effect in an electrostatic field, molecular Hanle efrect, Hanle effect of stepwise excited levels, sensitized fluorescence Hanle effect). Dou...

Plasmonic graphene is fabricated using thermally assisted self-assembly of silver nanoparticles on graphene. The localized surface-plasmonic effect is demonstrated with the resonance frequency shifting from 446 to 495 nm when the lateral dimension of the Ag nanoparticles increases from about 50 to 150 nm. Finite-difference time-domain simulations are employed to confirm the experimentally obser...

Inelastic light scattering by electrons of a two-dimensional system taking into account the Rashba spin-orbit interaction (SOI) in the conduction band is theoretically investigated. The case of resonance scattering (frequencies of incident and scattered light are close to the effective distance between conduction and spin-split-off bands of the AIIIBV-type semiconductor) is considered. As oppos...

Silver nanobars with rectangular side facets and an average aspect ratio of 2.7 have been synthesized by modifying the concentration of bromide added to a polyol synthesis. Subsequent rounding of nanobars transformed them into nanorice. Due to their anisotropy, nanobars and nanorice exhibit two plasmon resonance peaks, scattering light both in the visible and in the near-infrared regions. With ...

In this study, aggregation behavior of a water soluble cationic metalloporphyrin, meso-tetrakis (2,3,5,6-tetrafluoro-N,N ,́N ́ ́-trimethyl ammonium phenyl) porphyrin nickel(II) [Ni(II)(TF4TMAPP)] is investigated in 5 mM aqueous phosphate buffer of pH 7.0 at 25.0 °C and various ionic strengths using optical absorption and resonance light scattering spectroscopic methods. The results suggest that [N...