Work

Dirac-like cone-based electromagnetic zero-index metamaterials

Year: 2021

Type: review

Abstract: Metamaterials with a Dirac-like cone dispersion at the center of the Brillouin zone behave like an isotropic and impedance-matched zero refractive index material at the Dirac-point frequency. Such metamaterials can be realized in the form of either bulk metamaterials with efficient coupling to free-space light or on-chip metamaterials that are efficiently coupled to integrated photonic circuits. These materials enable the interactions of a spatially uniform electromagnetic mode with matter over a large area in arbitrary shapes. This unique optical property paves the way for many applications, including arbitrarily shaped high-transmission waveguides, nonlinear enhancement, and phase mismatch-free nonlinear signal generation, and collective emission of many emitters. This review summarizes the Dirac-like cone-based zero-index metamaterials' fundamental physics, design, experimental realizations, and potential applications.

Source: Light Science & Applications

DOI: 10.1038/s41377-021-00642-2

Authors: Yang Li, C. T. Chan, Eric Mazur

Institutions: Tsinghua University, Hong Kong University of Science and Technology, Harvard University

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,975

Funders: National Natural Science Foundation of China, Research Grants Council, University Grants Committee, Tsinghua University, Beijing Municipal Science and Technology Commission