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