None sharp corner localized surface plasmons resonance based ultrathin metasurface single layer quarter wave plate

Abstract

We report on a non-sharp-corner quarter wave plate (NCQW) within the single layer of only 8 nm thickness structured by the Ag hollow elliptical ring array, where the strong localized surface plasmons (LSP) resonances are excited. By manipulating the parameters of the hollow elliptical ring, the transmitted amplitude and phase of the two orthogonal components are well controlled. The phase difference of π/2 and amplitude ratio of 1 is realized simultaneously at the wavelength of 834 nm with the transmission of 0.46. The proposed NCQW also works well in an ultrawide wavelength band of 110 nm, which suggests an efficient way of exciting LSP resonances and designing wave plates, and provides a great potential for advanced nanophotonic devices and integrated photonic systems.

Interparticle-Coupled Metasurface for Infrared Plasmonic Absorption

“…Plasmonic metasurfaces are 2D surface variants of metamaterials that consist of correspondingly miniaturized resonant metallic structures with sub-wavelength feature sizes [1]. Metasurfaces are ideal tools for plasmonic light manipulation, as they not only direct and concentrate far-field electromagnetic radiation into near-field regions, but also inspire plenty of other exciting applications in the future, including programmable on-demand optics [2] and photonics [3]. In addition, metasurfaces have complete control over light properties such as absorption [4], phase [5], dispersion [6], and polarization [7].…”