Design, theory, and measurement of a polarization-insensitive absorber for terahertz imaging

TitleDesign, theory, and measurement of a polarization-insensitive absorber for terahertz imaging
Publication TypeJournal Article
Year of Publication2009
AuthorsN. Landy, C..M. Bingham, T.. Tyler, N.M. Jokerst, D.R. Smith, W..J. Padilla
JournalPhysical Review B
Volume79
Issue12
ISBN Number1098-0121
Accession NumberWOS:000264769300023
Abstract

We present the theory, design, and realization of a polarization-insensitive metamaterial absorber for terahertz frequencies. Effective-medium theory is used to describe the absorptive properties of the metamaterial in terms of optical constants-a description that has been thus far lacking. From our theoretical approach, we construct a device that yields over 95% absorption in simulation. Our fabricated design consists of a planar single unit-cell layer of metamaterial and reaches an absorptivity of 77% at 1.145 THz.