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Anomalous Band Formation in Arrays of Terahertz Nanoresonators

2011; American Physical Society; Volume: 106; Issue: 1 Linguagem: Inglês

10.1103/physrevlett.106.013902

1092-0145

Young‐Mi Bahk, H. R. Park, Kwangjun Ahn, H. S. Kim, Y. H. Ahn, Dai‐Sik Kim, Jorge Bravo‐Abad, L. Martı́n-Moreno, F. J. García‐Vidal,

Photonic and Optical Devices

We investigate band formation in one-dimensional periodic arrays of rectangular holes which have a nanoscale width but a length of $100\text{ }\ensuremath{\mu}\mathrm{m}$. These holes are tailored to work as resonators in the terahertz frequency regime. We study the evolution of the electromagnetic response with the period of the array, showing that this dependence is not monotonic due to both the oscillating behavior of the coupling between holes and its long-range character.