scholarly journals Nonlocality-Enabled Magnetic Free Optical Isolation in Hyperbolic Metamaterials

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2865
Author(s):  
Bartosz Janaszek ◽  
Marcin Kieliszczyk ◽  
Paweł Szczepański
Keyword(s):  
Free Space ◽  
Spatial Dispersion ◽  
Integrated Systems ◽  
Hyperbolic Metamaterials ◽  
Hyperbolic Metamaterial ◽  
Optical Isolator ◽  
Optical Isolation ◽  
Linear Effects ◽  
Optical Diode ◽  
Non Locality

Hereby, we present an optical isolator (optical diode) based on a hyperbolic metamaterial (HMM). We demonstrate that a grating-free planar linear non-magnetic HMM structure deposited on a high-index substrate, which, due to presence of strong spatial dispersion (non-locality), reveals asymmetrical transmittance and reflectance characteristics for light of arbitrary polarization within a wide angular and spectral range. The presented device may be efficiently utilized to completely block backward and enforce unidirectional propagation in free space and integrated systems without the use of magnetooptical or non-linear effects.

scholarly journals Effect of Ballistic Electrons on the Optical Response of Hyperbolic Metamaterials

2019 ◽  
Vol 8 (5) ◽  
pp. 23-28
Author(s):  
G. M. Marega ◽  
E. Marega ◽  
B.-H. V. Borges ◽  
A. F. Da Mota
Keyword(s):  
Experimental Study ◽  
Optical Transmission ◽  
Ballistic Transport ◽  
Optical Response ◽  
Analytic Approximation ◽  
Metal Insulator ◽  
Hyperbolic Metamaterials ◽  
Hyperbolic Metamaterial ◽  
Simulated Model ◽  
Metal Insulator Metal

This paper presents a theoretical and experimental study of the effect of ballistic electrons on the optical response of MIM (Metal-Insulator-Metal) like hyperbolic metamaterial structures. The simulated model using standard parameters and the experimental optical transmission show a 20% peak difference due to the presence of ballistic transport in the metal. A semi-analytic approximation based on the Drude's model is used for accurately predicting the optical response of the hyperbolic substrate and plasmon damping in the fabricated metasurfaces.

scholarly journals Free space super focusing using all dielectric hyperbolic metamaterial

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Norhan A. Salama ◽  
Mai Desouky ◽  
S. S. A. Obayya ◽  
Mohamed A. Swillam
Keyword(s):  
Free Space ◽  
Hyperbolic Metamaterial

scholarly journals Efficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Ildar Yusupov ◽  
Dmitry Filonov ◽  
Tatyana Vosheva ◽  
Viktor Podolskiy ◽  
Pavel Ginzburg
Keyword(s):  
Free Space ◽  
Impedance Matching ◽  
Temporal Separation ◽  
Hyperbolic Metamaterials ◽  
Matching Layer ◽  
Order Of Magnitude ◽  
Dielectric Spheres ◽  
Boost Radiation ◽  
Spatial Locations ◽  
Magnitude Improvement

AbstractHyperbolic metamaterials were initially proposed in optics to boost radiation efficiencies of quantum emitters. Adopting this concept for antenna design allows approaching long-standing contests in radio physics. For example, broadband impedance matching, accompanied with moderately high antenna gain, is among the existent challenges. Here we propose employing hyperbolic metamaterials for a broadband impedance matching, while a structured layer on top of a metamaterials slab ensures an efficient and directive energy outcoupling to a free space. In particular, a subwavelength loop antenna, placed underneath the matching layer, efficiently excites bulk metamaterial modes, which have well-resolved spatial–temporal separation owing to the hypebolicity of effective permeability tensor. Interplaying chromatic and modal dispersions enable to map different frequencies into non overlapping spatial locations within a compact subwavelength hyperbolic slab. The outcoupling of energy to the free space is obtained by patterning the slab with additional resonant elements, e.g. high index dielectric spheres. As the result, two-order of magnitude improvement in linear gain of the device is predicted. The proposed new architecture can find a use in applications, where multiband or broadband compact devices are required.

scholarly journals Applications of Hyperbolic Metamaterial Substrates

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Yu Guo ◽  
Ward Newman ◽  
Cristian L. Cortes ◽  
Zubin Jacob
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Radiative Decay ◽  
Thermal Emission ◽  
Effective Medium ◽  
Radiative Decay Engineering ◽  
Hyperbolic Metamaterials ◽  
Hyperbolic Metamaterial ◽  
Subsurface Sensing ◽  
Plasmon Polaritons

We review the properties of hyperbolic metamaterials and show that they are promising candidates as substrates for nanoimaging, nanosensing, fluorescence engineering, and controlling thermal emission. Hyperbolic metamaterials can support unique bulk modes, tunable surface plasmon polaritons, and surface hyperbolic states (Dyakonov plasmons) that can be used for a variety of applications. We compare the effective medium predictions with practical realizations of hyperbolic metamaterials to show their potential for radiative decay engineering, bioimaging, subsurface sensing, metaplasmonics, and super-Planckian thermal emission.

scholarly journals Lattice model with power-law spatial dispersion for fractional elasticity

Open Physics ◽  
2013 ◽  
Vol 11 (11) ◽  
Author(s):  
Vasily Tarasov
Keyword(s):  
Power Law ◽  
Lattice Model ◽  
Fractional Integral ◽  
Spatial Dispersion ◽  
Gradient Elasticity ◽  
Continuous Limit ◽  
Elastic Continuum ◽  
Laplacian Operators ◽  
Non Locality ◽  
The Continuum

AbstractA lattice model with a spatial dispersion corresponding to a power-law type is suggested. This model serves as a microscopic model for elastic continuum with power-law non-locality. We prove that the continuous limit maps of the equations for the lattice with the power-law spatial dispersion into the continuum equations with fractional generalizations of the Laplacian operators. The suggested continuum equations, which are obtained from the lattice model, are fractional generalizations of the integral and gradient elasticity models. These equations of fractional elasticity are solved for two special static cases: fractional integral elasticity and fractional gradient elasticity.

scholarly journals Features and energy characteristics of special inhomogeneous electromagnetic waves in hyperbolic metamaterials

2019 ◽  
Vol 54 (4) ◽  
pp. 488-498
Author(s):  
N. S. Petrov ◽  
S. N. Kurilkina ◽  
A. B. Zimin ◽  
V. N. Belyi
Keyword(s):  
Total Internal Reflection ◽  
Electromagnetic Waves ◽  
Optical Axis ◽  
Interface Plane ◽  
Energy Characteristics ◽  
Hyperbolic Metamaterials ◽  
Hyperbolic Metamaterial ◽  
Exponential Law ◽  
Inhomogeneous Waves ◽  
Existence Conditions

In this paper, it is shown that under the conditions of total internal reflection of plane homogeneous electromagnetic waves at the interface of a hyperbolic metamaterial and an ordinary isotropic medium, special inhomogeneous electromagnetic waves are excited in certain circumstances near the surface of the metamaterial and their amplitude changes with distance according to the non-exponential law. The existence conditions for such waves are established for the case when the optical axis is located within the interface plane and forms an angle with the plane of incidence. The energy flux and the energy density of special inhomogeneous waves in a hyperbolic metamaterial are determined. 

Surface imaging microscopy with tunable penetration depth as short as 20 nm by employing hyperbolic metamaterials

2018 ◽  
Vol 6 (7) ◽  
pp. 1797-1805 ◽  
Author(s):  
Weijie Kong ◽  
Wenjuan Du ◽  
Kaipeng Liu ◽  
Hongchao Liu ◽  
Zeyu Zhao ◽  
...  
Keyword(s):  
Penetration Depth ◽  
Surface Imaging ◽  
Hyperbolic Metamaterials ◽  
Hyperbolic Metamaterial ◽  
Bulk Plasmon ◽  
20 Nm ◽  
Plasmon Polaritons

Deep subwavelength bulk plasmon polaritons excited by a hyperbolic metamaterial could provide an illumination field with tunable ultra-short penetration depth.

scholarly journals Influence of Nonlocality on Transmittance and Reflectance of Hyperbolic Metamaterials

Crystals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 577
Author(s):  
Bartosz Janaszek ◽  
Marcin Kieliszczyk ◽  
Anna Tyszka-Zawadzka ◽  
Paweł Szczepański
Keyword(s):  
Spatial Dispersion ◽  
Beam Steering ◽  
Spatial Filtering ◽  
Local Response ◽  
Hyperbolic Metamaterials ◽  
Total Reflectance ◽  
Resonant Character ◽  
Potential Applications ◽  
Working Principle ◽  
Optical Phenomena

In this paper we investigate transmittance and reflectance spectra of multilayer hyperbolic metamaterials in the presence of strong spatial dispersion. Our analysis revealed a number of intriguing optical phenomena, which cannot be predicted with the local response approximation, such as total reflectance for small angles of incidence or multiple transmittance peaks of resonant character (instead of the respective local counterparts, where almost complete transparency is predicted for small angles of incidence and the broad-angle transparency can be observed within a range of larger angles of incidence). We believe that the observed effects may serve as a working principle in a number of new potential applications, such as spatial filtering, biosensing, or beam steering.

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