The art of confinement

By structuring the surface of a metal with an array of holes, photonics researchers show that it is possible to tightly confine terahertz surface waves, reducing their decay length into air by two orders of magnitude. The results could lead to new approaches to waveguiding.

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Figure 1: Schematic representation of the set-up used by Christopher Williams and co-workers.


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Rivas, J. The art of confinement. Nature Photon 2, 137–138 (2008). https://doi.org/10.1038/nphoton.2008.12

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