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