Resonant Properties of Dielectric Metalayer

Khardikov, Vyacheslav V.; Prosvirnin, S. L.; Bezborodov, V. I.; Kosyak, O. S.; Kuleshov, Y. M.; Mizrakhi, S. V.; Nakhimovich, M. I.; Nesterov, P. K.; Nesterov, I. A.

doi:10.15407/rpra21.01.065

Cited by 3 publications

(2 citation statements)

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“…Another interesting pathway for active dielectric nanoparticle structures is gain and lasing devices. Dielectric metamaterials hybridized with a gain material were theoretically studied in [159]. By designing the metamaterial to support a resonance with a high quality factor exceeding 200, an enhancement of emission by the gain material of more than 500 was found in numerical calculations.…”

Section: Active Dielectric Nanoresonator Structuresmentioning

confidence: 99%

Resonant dielectric nanostructures: a low-loss platform for functional nanophotonics

Decker

Staude

2016

J. Opt.

230

195

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This review overviews the state of the art of research into high-index dielectric nanoresonators and their use in functional photonic nanostructures at optical frequencies. We start by providing the motivations for this research area and by putting it into context with the more well-established subfields of nanophotonics, in particular nanoplasmonics. Following the introduction, fundamental concepts regarding the optical properties of subwavelength dielectric nanoresonators are established. To this end, we provide a brief summary of the Mie theory, before focussing on optically induced magnetic response in Mie-resonant dielectric nanoparticles. We discuss the influence of the nanoparticle’s shape on its optical response, and provide an overview of directional effects that can occur when light is scattered by a Mie-resonant nanoparticle. We then dedicate a few words to technology-related aspects, including an overview of fabrication methods for Mie-resonant dielectric nanoparticles. Next, recent progress on all-dielectric nanoantennas is presented, focussing on strategies to locally enhance optical near-fields and to achieve directional emission patterns. We then turn to all-dielectric metasurfaces and their potential applications. We touch on dielectric metamaterial reflectors and Fano-resonant dielectric metasurfaces, before discussing graded Mie-resonant dielectric metasurfaces for wavefront control applications in more detail. Following this, an overview of the recent progress in active, tunable and nonlinear dielectric nanostructures is provided. Finally, prospects and challenges are discussed, particularly the realization of highly efficient Mie-resonant nanostructures at visible frequencies, the integration of Mie-resonant nanostructures with active and functional materials, and the construction of three-dimensional high-index dielectric nanostructures.

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Section: Active Dielectric Nanoresonator Structuresmentioning

confidence: 99%

Resonant dielectric nanostructures: a low-loss platform for functional nanophotonics

Decker

Staude

2016

J. Opt.

230

195

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“…Most metasurfaces realized so far are passive and thus rely on external light sources to synthesize light fields with desired properties. However, the potential of resonant dielectric metasurfaces to enhance and tailor spontaneous emission was also investigated, , pointing toward their possible deployment as flat light sources with emission properties that can be tailored by the metasurface design. The keys to the manipulation of spontaneous emission are the electric and magnetic Mie-type resonances supported by high refractive-index-contrast dielectric nanoparticles, which can concentrate the electromagnetic near-fields inside or near the resonant nanoparticles.…”

mentioning

confidence: 99%

Active Tuning of Spontaneous Emission by Mie-Resonant Dielectric Metasurfaces

Bohn

Bucher

Chong³

et al. 2018

Nano Lett.

128

120

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Mie-resonant dielectric metasurfaces offer comprehensive opportunities for the manipulation of light fields with high efficiency. Additionally, various strategies for the dynamic tuning of the optical response of such metasurfaces were demonstrated, making them important candidates for reconfigurable optical devices. However, dynamic control of the light-emission properties of active Mie-resonant dielectric metasurfaces by an external control parameter has not been demonstrated so far. Here, we experimentally demonstrate the dynamic tuning of spontaneous emission from a Mie-resonant dielectric metasurface that is situated on a fluorescent substrate and embedded into a liquid crystal cell. By switching the liquid crystal from the nematic state to the isotropic state via control of the cell temperature, we induce a shift of the spectral position of the metasurface resonances. This results in a change of the local photonic density of states, which, in turn, governs the enhancement of spontaneous emission from the substrate. Specifically, we observe spectral tuning of both the electric and magnetic dipole resonances, resulting in a 2-fold increase of the emission intensity at λ ≈ 900 nm. Our results demonstrate a viable strategy to realize flat tunable light sources based on dielectric metasurfaces.

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