Work

Left handed dispersion of a stack of subwavelength hole metal arrays at terahertz frequencies

Year: 2009

Type: article

Abstract: We report on the electromagnetic response of a stack of subwavelength hole metal arrays. The samples were designed for exhibiting left handed dispersion branches under normal incidence, and their transmissivities were optimized via the fabrication of elliptical-shaped holes. They are constituted of benzocyclobutene layers with tens of micron thicknesses and submicron-thick gold films patterned by photolithography. Experimental evidence, achieved by time-domain terahertz spectroscopy and supported by full wave simulations, of a ground left handed dispersion branch is found around 0.45 THz. The insertion losses are −3 dB for a five-layer structure, this good level being explained by the matching of the impedance.

Source: Applied Physics Letters

DOI: 10.1063/1.3114411

Authors: Charles Croënne, Frédéric Garet, Éric Lheurette, Jean-Louis Coutaz, Didier Lippens

Institutions: Institut d'Electronique, de Microélectronique et de Nanotechnologie, Centre National de la Recherche Scientifique, Institut de Microélectronique, Electromagnétisme et Photonique, Centre de Radiofréquences, Optique et Micro-nanoélectronique des Alpes

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2010607997

FWCI: 1.627

Cites: 16

Cited by: 22

Related to: 9