Photonic crystals have long been used to confine and guide propagating electromagnetic waves with low loss. Now, a new twist has been added by exploiting their leaky mode to effectively trap and dissipate incident electromagnetic energy over a broad frequency band.
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Withayachumnankul, W., Fumeaux, C. Photonic crystal traps THz waves. Nature Photon 8, 586–587 (2014). https://doi.org/10.1038/nphoton.2014.168
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DOI: https://doi.org/10.1038/nphoton.2014.168
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