Critical coupling and extreme confinement in nanogap antennas.
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DOI: 10.1364/ol.44.004761
Abstract: Nanogap antennas are compelling structures for squeezing light into ultrasmall volumes. However, when gaps are shrunk to the nanometer scale, the mode losses dramatically increase. In this Letter, we report the conditions of critical coupling… read more here.
Keywords: critical coupling; mode; nanogap antennas; extreme confinement ... See more keywords