|Title||Design, theory, and measurement of a polarization-insensitive absorber for terahertz imaging|
|Publication Type||Journal Article|
|Year of Publication||2009|
|Authors||N. Landy, C..M. Bingham, T.. Tyler, N.M. Jokerst, D.R. Smith, W..J. Padilla|
|Journal||Physical Review B|
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.