Numerical simulations of terahertz double-negative metamaterial with isotropic-like fishnet structure

• Published in: Photonics and nanostructures 2009-05, Vol.7 (2), p.92-100
• Main Authors: Ding, P., Liang, E.J., Hu, W.Q., Zhang, L., Zhou, Q., Xue, Q.Z.
• Format: Article
• Language: English
• Subjects: Applied classical electromagnetism; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Double-negative; Electromagnetic wave propagation, radiowave propagation; Electromagnetism; electron and ion optics; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Isotropic-like fishnet structure; Metamaterial; Negative refractive index; Optical constants: refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Physics; Terahertz
• ISSN: 1569-4410; 1569-4429
• DOI: 10.1016/j.photonics.2008.12.005

The isotropic-like fishnet metamaterial with an array of cross-shaped holes penetrating through the multiple layers has been numerically studied in the terahertz regime. Its left-handed properties are described by the retrieved effect media parameters and validated by the simulation of a wedge-shaped model. The influences of the various geometrical parameters on the electromagnetic response and the left-handed performance are investigated. This isotropic-like fishnet metamaterial has the advantage of lower losses and higher transmission and holds potential for further applications at higher frequencies.