Optical Huygens' Metasurfaces with Independent Control of the Magnitude and Phase of the Local Reflection Coefficients

By Minseok Kim, A. Wong, George V. Eleftheriades. 2014

162 citations recorded by the source corpus.

Implementation of abrupt phase discontinuities along a surface has been the theme of recent research on electromagnetic metasurfaces. Simple functionalities such as reflecting, refracting, or focusing plane waves have been demonstrated with devices featuring phase discontinuities, but optical surfaces allowing independent magnitude and phase control on the scattered waves have yet to emerge. In this paper, we propose the first true optical Huygens’ surface, which explicitly utilizes orthogonal electric and magnetic responses to realize total control on an optical surface’s local reflection coefficients. This extends the functionality of metasurfaces to an unprecedented level. We first demonstrate that a nanorod gap-surface plasmon resonator can act as a Huygens’ source. Thereafter, by properly tuning and rotating these resonators, we realize arbitrary reflection optical metasurfaces—surfaces for which the local reflection coefficients can be independently tailored in both magnitude and phase. We demonstrate the versatility of this approach through designs of a metasurface that asymmetrically reflects two copolarized beams and a Dolph-Tschebyscheff optical reflectarray.

Subfields: Aerospace Engineering, Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/d299591ac3d78f15066fb2c682a47c0770f0b38b

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Aerospace Engineering

In Biomedical Engineering

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Metasurfaces and their applications (2018, background): “the phase of the reflection coefficient [109] of co-polarized, asymmetrical reflected waves.”
Multi-Beam Forming and Controls by Metasurface With Phase and Amplitude Modulations (2019, background): “for altering the directions of outgoing EM waves arbitrarily [8], [9].”
Perfect control of reflection and refraction using spatially dispersive metasurfaces (2016, methodology): “Such an approach has been used, for example, in [20–27, 42] as well as in all known designs of reflectarrays.”
Metasurface holography: from fundamentals to applications (2018, methodology): “To reduce the complexity, the main features of spectrally overlapping, crossed electric and magnetic dipole resonances of equal strength were employed by using high-permittivity all-dielectric scatters [53–55].”
Perfect Anomalous Reflection with a Bipartite Huygens’ Metasurface (2017, background): “[20] first reported the reduction of spurious reflection in a metasurface with an appropriately designed loss profile.”