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Magnetic hyperbolic optical metamaterials ARTICLE
... their relatively simple geometry and many interesting properties, such as high density of states, all-angle negative refraction and hyperlens imaging beyond the diffraction limit1–3. Usually, both artificial4–9 and natural10,11 media with hyperbolic dispersion are uniaxial materials whose axial and t ...
... their relatively simple geometry and many interesting properties, such as high density of states, all-angle negative refraction and hyperlens imaging beyond the diffraction limit1–3. Usually, both artificial4–9 and natural10,11 media with hyperbolic dispersion are uniaxial materials whose axial and t ...
Magnetic Circuit Analog
... The analogies between electric and magnetic circuits are two: the electric circuit quantity of current is analogous to magnetic circuit quantity flux. (Both of these quantities are ’solenoidal’ in the sense that they have no divergence). The electric circuit quantity of voltage, or electomotive force ...
... The analogies between electric and magnetic circuits are two: the electric circuit quantity of current is analogous to magnetic circuit quantity flux. (Both of these quantities are ’solenoidal’ in the sense that they have no divergence). The electric circuit quantity of voltage, or electomotive force ...
Magnetic Circuits - GTU e
... The polarity of the induced emf is such that it tends to produce a current that creates a magnetic flux to oppose the change in magnetic flux through the area enclosed by the current loop. As the bar is slid to the right, the flux through the loop increases. This induces an emf that will result in a ...
... The polarity of the induced emf is such that it tends to produce a current that creates a magnetic flux to oppose the change in magnetic flux through the area enclosed by the current loop. As the bar is slid to the right, the flux through the loop increases. This induces an emf that will result in a ...
Ab-initio Calculations of Photonic Structures
... temperature and modest power levels represents one of the critical challenges that must be overcome to realize truly practical applications based on THz.1 Up to now, the most efficient approaches to THz generation at room temperature — relying mainly on optical rectification schemes — require intric ...
... temperature and modest power levels represents one of the critical challenges that must be overcome to realize truly practical applications based on THz.1 Up to now, the most efficient approaches to THz generation at room temperature — relying mainly on optical rectification schemes — require intric ...
Electromagnetic Wave Theory and Applications
... proposed and experimentally realized. Both the results of simulation and experiments verify the tunable Left-handed properties of the structure in microwave band. By utilizing the controllable metamaterial, a tunable prism is built and beam steering of the prism is tested in the experiment. The simp ...
... proposed and experimentally realized. Both the results of simulation and experiments verify the tunable Left-handed properties of the structure in microwave band. By utilizing the controllable metamaterial, a tunable prism is built and beam steering of the prism is tested in the experiment. The simp ...
Magnetic Materials Background: 5. Properties
... The saturation magnetisation (MS) is a measure of the maximum amount of field that can be generated by a material. It will depend on the strength of the dipole moments on the atoms that make up the material and how densely they are packed together. The atomic dipole moment will be affected by the na ...
... The saturation magnetisation (MS) is a measure of the maximum amount of field that can be generated by a material. It will depend on the strength of the dipole moments on the atoms that make up the material and how densely they are packed together. The atomic dipole moment will be affected by the na ...
Sébastien Guenneau (Institut Fresnel, UMR CNRS 7249 à Aix
... Stéphane Brûlé (Agence Rhône Alpes de Ménard, Nozay), [email protected] Using analogies between transformational optics to control surface electromagnetic waves propagating at structured metal-dielectric interfaces and transformational elastodynamics to control Rayleigh waves propagatin ...
... Stéphane Brûlé (Agence Rhône Alpes de Ménard, Nozay), [email protected] Using analogies between transformational optics to control surface electromagnetic waves propagating at structured metal-dielectric interfaces and transformational elastodynamics to control Rayleigh waves propagatin ...
STUDIUM DOKTORANCKIE W ITE Wybrane problemy
... presence of crystal imperfections and, under certain conditions, can be used as a diagnostic tool for quality and reliability of devices. At the same time, high level of the low-frequency noise is one of the factors, which restricts application of these devices for communication systems. In most cas ...
... presence of crystal imperfections and, under certain conditions, can be used as a diagnostic tool for quality and reliability of devices. At the same time, high level of the low-frequency noise is one of the factors, which restricts application of these devices for communication systems. In most cas ...
Tao Yuan, Jingzhou Xu, and Xicheng Zhang Rensselaer
... The resolution of conventional image system is limited by diffraction: x /NA, which is the so called Rayleigh Criterion. The limitation is more serious for THz image system because of the long wavelength used (~300 m for 1THz). Sub-wavelength resolution can be achieved by near field technology ...
... The resolution of conventional image system is limited by diffraction: x /NA, which is the so called Rayleigh Criterion. The limitation is more serious for THz image system because of the long wavelength used (~300 m for 1THz). Sub-wavelength resolution can be achieved by near field technology ...
Cross-polarized angular emission patterns from lens
... Terahertz time-domain spectroscopy (THz-TDS) is a versatile technique for the generation and detection of radiation in the submillimeter range. It is by now well established that femtosecond optical pulses can be used to generate a spatially coherent beam of terahertz radiation, in the form of singl ...
... Terahertz time-domain spectroscopy (THz-TDS) is a versatile technique for the generation and detection of radiation in the submillimeter range. It is by now well established that femtosecond optical pulses can be used to generate a spatially coherent beam of terahertz radiation, in the form of singl ...
Conjugated gammadion chiral metamaterial with uniaxial optical
... We demonstrate numerically and experimentally a conjugated gammadion chiral metamaterial that uniaxially exhibits huge optical activity and circular dichroism, and gives a negative refractive index. This chiral design provides smaller unit cell size and larger chirality compared with other published ...
... We demonstrate numerically and experimentally a conjugated gammadion chiral metamaterial that uniaxially exhibits huge optical activity and circular dichroism, and gives a negative refractive index. This chiral design provides smaller unit cell size and larger chirality compared with other published ...
Get PDF - OSA Publishing
... terahertz (THz) pulses [1, 2, 3]. The THz pulses propagate on these wires as surface plasmon polaritons having a radial polarization and are often referred to as Sommerfeld waves [3, 4]. It has been shown that these pulses can travel relatively long distances of up to a few meters on these wires, si ...
... terahertz (THz) pulses [1, 2, 3]. The THz pulses propagate on these wires as surface plasmon polaritons having a radial polarization and are often referred to as Sommerfeld waves [3, 4]. It has been shown that these pulses can travel relatively long distances of up to a few meters on these wires, si ...
Spectrum of spatial frequency of terahertz vortex Bessel beams formed using phase plates with spiral zones
... practically perfect Bessel beam with weak components of higher orders. The latter can be easily removed using a simple system of optical filtering. ...
... practically perfect Bessel beam with weak components of higher orders. The latter can be easily removed using a simple system of optical filtering. ...
Get PDF - OSA Publishing
... Metals such as gold, silver, copper support plasmonic resonances at visible frequencies. The plasmonic resonance strongly relies on the size, shape of the metallic structures, and the surrounding dielectric environment [1]. By artificially designing structured geometry, the plasmonic resonant peak c ...
... Metals such as gold, silver, copper support plasmonic resonances at visible frequencies. The plasmonic resonance strongly relies on the size, shape of the metallic structures, and the surrounding dielectric environment [1]. By artificially designing structured geometry, the plasmonic resonant peak c ...
Fundamentals of Magnetism
... performance suitable magnetic materials for inductive write heads have to fulfill a list of requirements: •High saturation magnetization (Ms) is necessary because it defines the maximum Hg. High field (Hg) is necessary to write magnetic media with high coercivity (sitable for for high density storag ...
... performance suitable magnetic materials for inductive write heads have to fulfill a list of requirements: •High saturation magnetization (Ms) is necessary because it defines the maximum Hg. High field (Hg) is necessary to write magnetic media with high coercivity (sitable for for high density storag ...
Metamaterials at Optical Frequencies: Fabrication and Measurements
... production volumes that it provides. It may eventually merge with X-ray lithography due to recent developments in X-ray lasers that offer bright coherent light sources at wavelengths such as 13 nm or 15 nm. Electron-beam lithography The original electron-beam (e-beam) writing tools were made by modi ...
... production volumes that it provides. It may eventually merge with X-ray lithography due to recent developments in X-ray lasers that offer bright coherent light sources at wavelengths such as 13 nm or 15 nm. Electron-beam lithography The original electron-beam (e-beam) writing tools were made by modi ...
Imaging properties of a metamaterial superlens
... Metamaterials have opened an exciting gateway to create unprecedented physical properties and functionality unattainable from naturally existing materials. The ‘‘atoms’’ and ‘‘molecules’’ in metamaterials can be tailored in shape and size; the lattice constant and interatomic interaction can be arti ...
... Metamaterials have opened an exciting gateway to create unprecedented physical properties and functionality unattainable from naturally existing materials. The ‘‘atoms’’ and ‘‘molecules’’ in metamaterials can be tailored in shape and size; the lattice constant and interatomic interaction can be arti ...
Medical applications of Terahertz Imaging: a Review of Current
... photoconductive dipole antennas (PDA), and devices relying on optical mixing to generate THz radiation – are ubiquitous in medical applications. They are used to provide both narrowband continuous wave (CW) radiation and broadband THz pulses across a wide range of frequencies. Lasers, although viabl ...
... photoconductive dipole antennas (PDA), and devices relying on optical mixing to generate THz radiation – are ubiquitous in medical applications. They are used to provide both narrowband continuous wave (CW) radiation and broadband THz pulses across a wide range of frequencies. Lasers, although viabl ...
THz Materials
... penetrate into organic materials such as skin, plastics, cloth, or paper products. Because of low photon energy involved, it does not cause any damage associated with ionizing radiation (e.g. X-rays). THz waves do not penetrate into metals. These properties can be used in process (e.g. drugs manufac ...
... penetrate into organic materials such as skin, plastics, cloth, or paper products. Because of low photon energy involved, it does not cause any damage associated with ionizing radiation (e.g. X-rays). THz waves do not penetrate into metals. These properties can be used in process (e.g. drugs manufac ...
Spectroscopic Imaging using Terahertz Time-Domain Signals
... analysis of the multiple, internal reflections described by the Fabry-Perot effect. A gradient search minimizes the difference between the model and the measured signals, over a range of thicknesses. At each guessed thickness, we iteratively update the complex index of refraction function to minimiz ...
... analysis of the multiple, internal reflections described by the Fabry-Perot effect. A gradient search minimizes the difference between the model and the measured signals, over a range of thicknesses. At each guessed thickness, we iteratively update the complex index of refraction function to minimiz ...
Optical metamaterials at near and mid-IR range fabricated by nanoimprint lithography
... magnetic fields with a sub-wavelength resolution [6]. This result has serious limitations [7], but it was indeed possible to demonstrate a Vesalago lens with sub-wavelength resolution with just a silver slab, as originally suggested by Pendry, and certain photonic crystals. The importance of artific ...
... magnetic fields with a sub-wavelength resolution [6]. This result has serious limitations [7], but it was indeed possible to demonstrate a Vesalago lens with sub-wavelength resolution with just a silver slab, as originally suggested by Pendry, and certain photonic crystals. The importance of artific ...
Optical metamaterials at near and mid-IR range fabricated by nanoimprint lithography
... magnetic fields with a sub-wavelength resolution [6]. This result has serious limitations [7], but it was indeed possible to demonstrate a Vesalago lens with sub-wavelength resolution with just a silver slab, as originally suggested by Pendry, and certain photonic crystals. The importance of artific ...
... magnetic fields with a sub-wavelength resolution [6]. This result has serious limitations [7], but it was indeed possible to demonstrate a Vesalago lens with sub-wavelength resolution with just a silver slab, as originally suggested by Pendry, and certain photonic crystals. The importance of artific ...
Universidad de Cantabria ON LIGHT SCATTERING BY NANOPARTICLES WITH CONVENTIONAL AND NON-CONVENTIONAL
... their real possibilities are quite controversial [38]. As these new properties cannot be realized using naturally occurring materials, the only possible way to obtain these, is to manufacture them. These artificial media are structured on a scale smaller than the wavelength of the incident wave (see ...
... their real possibilities are quite controversial [38]. As these new properties cannot be realized using naturally occurring materials, the only possible way to obtain these, is to manufacture them. These artificial media are structured on a scale smaller than the wavelength of the incident wave (see ...
Composite THz materials using aligned metallic
... that can exhibit various unusual properties. One possible implementation of a THz metamaterial is in the form of the periodic metallic split-ring resonator arrays [5,6] which are typically fabricated by electron-beam lithography or photolithography, on a substrate made of a glass or a semiconductor ...
... that can exhibit various unusual properties. One possible implementation of a THz metamaterial is in the form of the periodic metallic split-ring resonator arrays [5,6] which are typically fabricated by electron-beam lithography or photolithography, on a substrate made of a glass or a semiconductor ...
Fast Modulation of Terahertz Quantum Cascade
... as a versatile tool for the creation of efficient and compact devices in the mid-infrared/terahertz spectral range for spectroscopic applications,11−13 modulation,14−18 emission and detection,19−22 and more fundamental physical studies.23,24 These devices, which exploit the extreme subwavelength light ...
... as a versatile tool for the creation of efficient and compact devices in the mid-infrared/terahertz spectral range for spectroscopic applications,11−13 modulation,14−18 emission and detection,19−22 and more fundamental physical studies.23,24 These devices, which exploit the extreme subwavelength light ...