期刊
REPORTS ON PROGRESS IN PHYSICS
卷 82, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6633/aad3e5
关键词
metamaterials; zero-index; nanophotonics; Dirac-cone
Metamaterials with a refractive index of zero exhibit properties that are important for integrated optics. Possessing an infinite effective wavelength and zero spatial phase change, zero-index metamaterials may be especially useful for routing on-chip photonic processes and reducing the footprint of nonlinear interactions. Zero-index has only been achieved recently in an integrated platform through a Dirac-cone dispersion, enabling some of these more exciting applications in an integrated platform. This paper presents an overview of Dirac-cone zero-index metamaterials, including the fundamental physics, history and demonstration in the optical regime, as well as current challenges and future directions.
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