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Terahertz technology

Mind the gap

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Researchers in South Korea and the Netherlands have demonstrated that the enhancement of the electric field of terahertz radiation inside a nano-slit continues to grow, even when the slit becomes narrower than the skin depth of the material.

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Figure 1: Computed electric field amplitude, E, and current, J, for a 70-nm-wide slit in a 60-nm-thick gold film.

References

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Authors and Affiliations

  1. Luis Martin-Moreno is in the Instituto de Ciencia de Materiales y Departamento de Fisica de la Materia Condensada, CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain. lmm@unizar.es,

    Luis Martin-Moreno

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  1. Luis Martin-Moreno
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Martin-Moreno, L. Mind the gap. Nature Photon 3, 131–132 (2009). https://doi.org/10.1038/nphoton.2009.16

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