Extraordinary optical reflection from sub-wavelength cylinder arrays.

Extraordinary Optical Reflection from Annular Dielectric Nanorod Arrays

Responses of free standing subwavelength annular dielectric nanorod arrays are described. Extreme reflection peaks with high quality factor follow a multiple scattering approach, which can be explained by geometrical resonance. It is demonstrated that the value and the resonant frequency of the sharp geometric resonance modes can be tuned by geometric parameters such as the outer radius, inner ...

Enhanced fluorescence from arrays of nanoholes in a gold film.

Arrays of sub-wavelength holes (nanoholes) in gold films were used as a substrate for enhanced fluorescence spectroscopy. Seven arrays of nanoholes with distinct periodicities (distances between the holes) were fabricated. The arrays were then spin-coated with polystyrene films containing different concentrations of the fluorescent dye oxazine 720. The dye was excited via resonant extraordinary...

Nanostructure arrays in free-space: optical properties and applications.

Dielectric and metallic gratings have been studied for more than a century. Nevertheless, novel optical phenomena and fabrication techniques have emerged recently and have opened new perspectives for applications in the visible and infrared domains. Here, we review the design rules and the resonant mechanisms that can lead to very efficient light-matter interactions in sub-wavelength nanostruct...

Optical response of plasmonic relief meta-surfaces

Bulk metal surfaces patterned with arrays of sub-wavelength surface features can couple incident light into localized plasmon modes, thereby modifying the intensity and phase of reflected light. Beyond previously reported applications to colour control, we report on the functionality of continuously metallic meta-surfaces for optical magnetic reflection, perfect absorption, and active photonic ...

Evaluation of Reflection Optical Imaging Characteristics Using Fluorescence with Near Infrared Wavelength at Different Depths of Tissue Equivalent Phantom