Demonstration of hyperbolic metamaterials at telecommunication wavelength using Ga-doped ZnO

Kalusniak, Sascha; Orphal, Laura; Sadofev, Sergey

doi:10.1364/oe.23.032555

Cited by 12 publications

(10 citation statements)

References 17 publications

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“…38 A hyperbolic material is a highly anisotropic material, for which the components of the permittivity parallel (ε ) and perpendicular (ε ⊥ ) to the crystal axis have opposite sign. 39 The usually elliptic isofrequency curves of the extraordinary wave become a hyperboloid in black phosphorus. Due to this unique topology, black phosphorus allows the propagation of otherwise evanescent waves.…”

Section: Plasmons In 2d Semiconductorsmentioning

confidence: 99%

Plasmonics with two-dimensional semiconductors: from basic research to technological applications

et al. 2018

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Herein, we explore the main features and the prospect of plasmonics with two-dimensional semiconductors. Plasmonic modes in each class of van der Waals semiconductors have their own peculiarities, along with potential technological capabilities. Plasmons of transition-metal dichalcogenides share features typical of graphene, due to their honeycomb structure, but with damping processes dominated by intraband rather than interband transitions, unlike graphene. Spin-orbit coupling strongly affects the plasmonic spectrum of buckled honeycomb lattices (silicene and germanene), while the anisotropic lattice of phosphorene determines different propagation of plasmons along the armchair and zigzag directions. Black phosphorus is also a suitable material for ultrafast plasmonics, for which the active plasmonic response can be initiated by photoexcitation with femtosecond pulses. We also review existing applications of plasmonics with two-dimensional materials in the fields of thermoplasmonics, biosensing, and plasma-wave Terahertz detection. Finally, we consider the capabilities of van der Waals heterostructures for innovative low-loss plasmonic devices.

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Section: Plasmons In 2d Semiconductorsmentioning

confidence: 99%

Plasmonics with two-dimensional semiconductors: from basic research to technological applications

et al. 2018

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“…They also show that all LSTO/STO HMMs present moderate i values (ranging from 2 to 4) and thus low optical losses in their hyperbolic spectral regions. Actually, the performances of HMMs are commonly benchmarked using the socalled figure of merit for HMMs (FOM), 17 ,52 that can be deduced from dielectric functions using , orange open circle : GZO/ZnO and ITO/ZnO HMMs 10, 55 , and pink dashed line :…”

Section: Conditions Of Continuity Of the Electrical Field And Electrimentioning

confidence: 99%

“…The FOM of samples SL-10%-9 nm and SL-20%-7 nm are in the 1−6 range between 1.46 and 4.5 μm and is by far better than that of typical metal-based HMMs or even than that of nitride-based HMMs in a comparable wavelength range. Up to 53 green open circle and green dashed line, AZO/ZnO HMMs; 10,20,54 orange open circle, GZO/ZnO and ITO/ZnO HMMs; 10,55 and pink dashed line, InAlAs/ InGaAs. 17 The yellow box indicates the spectral range where graphene/Al 2 O 3 superlattices have been reported as hyperbolic 18 and for which no data on FOM is available.…”

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confidence: 99%

Perovskite-Oxide Based Hyperbolic Metamaterials

et al. 2019

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We show that conducting LaxSr1-xTiO3 (LSTO) presents excellent plasmonic properties in the near-to mid-infrared region, and that these properties can be tuned with unrivalled flexibility by controlling the La composition. Taking advantage of this outstanding plasmonic response, we demonstrate a new class of hyperbolic metamaterials (HMMs) composed of LSTO/SrTiO3 (STO) epitaxial superlattices showing a high figure of merit in a spectral range not currently available with other known HMMs. The epitaxial nature of these HMMs combined with the tunability of the LSTO plasmonic response provides ultimate control on their dielectric properties, including their hyperbolic wavelength range. The epitaxial coherency and atomic level abruptness of the LSTO/STO interfaces supporting the plasmon resonances contribute to their low absorption losses. These HMMs involve individual layers with very low thicknesses (few nanometers), and can be combined by epitaxy to the many members of the functional oxide family, opening perspectives 2 for their very compact integration in multifunctional heterostructures. They can also be epitaxially grown on Si and GaAs technological platforms by epitaxy using SrTiO3/Si and SrTiO3/GaAs templates, making them perfectly suited for versatile integration in nanophotonic devices

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“…Here we choose the SMM as the guiding layer which has an anisotropic permittivity of According to the dispersion relation of SMM, we can get [14] where ε ZnO = 3.7 and ρ = d ZnGaO (d ZnGaO + d ZnO ) −1 . The permittivity of ZnGaO is described by Drude's dielectric function in which ω p is the plasma frequency and Γ is electronic damping rate.…”

Section: Principle and Theoretical Analysismentioning

confidence: 99%

“…HMMs operating at telecommunication wavelengths using heavily doped ZnGaO as plasmonic component are demonstrated by Kalusniak et al. [14] which have attractive applications in imaging below the diffraction limit with telecommunication light. For simplicity, we call this kind of HMM with ZnGaO/ZnO multilayer as semiconductor metamaterial (SMM).…”

mentioning

confidence: 99%

Goos–Hänchen effect in semiconductor metamaterial waveguide and its application as a biosensor

Tang

Li²,

Luo

et al. 2016

Appl. Phys. B

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shift is of the order of one wavelength, which impedes its direct observation in a single reflection. Recently, the enhancement of GH shift has attracted much attention of researchers and large lateral shift has been realized in different structures for its potential applications in integrated optics, optical storage and optical sensors. Many methods are utilized to realize an enhanced GH effect such as leaky guided mode generation in a thin dielectric layer [3], a Kretschmann configuration with long-range surface plasmon resonance (SPR) [4], magneto-optic enhancement in prism waveguide coupling structure [5] and multilayered waveguide with hyperbolic metamaterials (HMMs) [6].HMM is a kind of metamaterial [7,8] which have become a topic of significant research interest in recent years [9][10][11]. It is formed by stacks of alternating, subwavelength thin metallic and dielectric layers which can be regarded as an effective uniaxial crystal. HMMs based on semiconductors with InGaAs/AlInAs multilayers show negative refractive index in mid-infrared region [12]. In 2012, Naik et al. [13] proposed a HMM in the near-infrared spectral range at about 1.9 μm using ZnAlO/ZnO. HMMs operating at telecommunication wavelengths using heavily doped ZnGaO as plasmonic component are demonstrated by Kalusniak et al. [14] which have attractive applications in imaging below the diffraction limit with telecommunication light. For simplicity, we call this kind of HMM with ZnGaO/ZnO multilayer as semiconductor metamaterial (SMM).In this paper, we first investigate the GH effect in a prism waveguide coupling structure with SMM and explore its application as a highly sensitive biosensor. Based on simulation results, GH effect in three different waveguides and their performances as a refractive index sensor to detect glycerol concentration in water are analyzed. AbstractWe investigate Goos-Hänchen (GH) effect in a prism waveguide coupling structure with semiconductor metamaterial (SMM) of ZnGaO/ZnO multilayer and explore the possibility as a biosensor. The GH effect in three different waveguides and their performances as a refractive index sensor to detect glycerol concentration in water are analyzed. The SMM brings a periodic property of GH shift peaks which is not found in other waveguides. It is also verified that setting coupling layer of the prism waveguide coupling structure as sensing area is an effective method to significantly increase the sensitivity to refractive index variation. A schematic diagram for the biosensor configuration is designed, and the sensitivity distribution for different glycerol water index is given. Calculation results show that in the proposed biosensor the maximum sensitivity reaches 3.2 × 10 6 μm/RIU and resolution reaches 1.6 × 10 −7 (around 1.33306) with high sensitive position sensitive detector.

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Demonstration of hyperbolic metamaterials at telecommunication wavelength using Ga-doped ZnO

Cited by 12 publications

References 17 publications

Plasmonics with two-dimensional semiconductors: from basic research to technological applications

Plasmonics with two-dimensional semiconductors: from basic research to technological applications

Perovskite-Oxide Based Hyperbolic Metamaterials

Goos–Hänchen effect in semiconductor metamaterial waveguide and its application as a biosensor

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