搜索结果: 1-13 共查到“光学 metamaterial”相关记录13条 . 查询时间(0.133 秒)
'Lossless' metamaterial could boost efficiency of lasers and other light-based devices
Lossless metamaterial lasers other light-based devices
2017/3/14
Engineers at the University of California San Diego have developed a material that could reduce signal losses in photonic devices. The advance has the potential to boost the efficiency of various ligh...
Analytical Study of Sub-Wavelength Imaging by Uniaxial Epsilon-Near-Zero Metamaterial Slabs
Analytical Study of Sub-Wavelength Uniaxial Epsilon-Near-Zero Metamaterial Slabs Optics
2012/5/29
We show that the two-dimensional Green's function of a uniaxial (with possibly tilted optical axis) epsilon-near-zero metamaterial slab, of interest for sub-wavelength imaging, can be calculated analy...
Active Negative Index Metamaterial Powered by an Electron Beam
Active Negative Index Metamaterial Electron Beam Optics
2012/5/17
A novel active negative index metamaterial that derives its gain from an electron beam is intro- duced. The metamaterial consists of a stack of equidistant parallel metal plates perforated by a period...
We demonstrate metamaterial metal-based bolometers, which take advantage of resonant absorption in that a spectral and/or polarization filter can be built into the bolometer. Our proof-of-principle go...
Construction of Chiral Metamaterial with a Helix Array
metamaterial helix chiral negative refractive index
2011/8/11
Abstract: Here we report the designing of chiral metamaterial with metallic helix array. The effective electric and magnetic dipoles, which originate from the induced surface electric current upon ill...
A copper negative index metamaterial in the visible / near-infrared
copper negative index visible near-infrared Optics
2011/8/11
Abstract: We propose a design for a novel plasmonic copper metamaterial with an index of refraction equal to -1 at an operating wavelength of 700 nm. Using numerical simulations, we demonstrate negati...
Hyperbolic metamaterial interfaces: Hawking radiation from Rindler horizons and the "end of time"
Hyperbolic metamaterial interfaces Hawking radiation Rindler horizons
2011/8/5
Abstract: Extraordinary rays in a hyperbolic metamaterial behave as particle world lines in a three dimensional (2+1) Minkowski spacetime. We analyze electromagnetic field behavior at the boundaries o...
A New Artificial Dielectric Metamaterial and its Application as a THz Anti-Reflection Coating
Artificial Dielectric Metamaterial THz Anti-Reflection Coating Optics
2011/8/17
Abstract: We describe a novel artificial dielectric material which has applications at millimetre and submillimetre wavelengths. The material is manufactured from layers of metal mesh patterned onto t...
Cooperative resonance linewidth narrowing in a planar metamaterial
Cooperative resonance linewidth planar metamaterial
2011/9/7
We theoretically analyze the experimental observations of a spectral line collapse in a metamaterial array of asymmetric split ring resonators [Fedotov et al., Phys. Rev. Lett. 104, 223901 (2010)].We ...
An FET-Based Unit Cell for an Active Magnetic Metamaterial
Terms—Artificial materials, FET circuits, Negative resistance devices, Polarizability, Oscillators
2011/9/14
A particle that can be used to create an active magnetic metamaterial has been designed using an FET transistor loaded in its gate by a conducting ring and in its source by a parallel resonance circui...
Enhancement of absorption bistability by trapping light planar metamaterial
bistability light planar metamaterial
2011/9/5
We study the peculiarities of the absorption bistability which appears in a planar metamaterial composed of a 4-fold periodic array of two concentric metal rings placed on a substrate of saturate abso...
Controlling the second-harmonic in a phase matched negative-index metamaterial
second-harmonic negative-index Nonlinear metamaterials (NLMMs)
2011/8/26
Nonlinear metamaterials (NLMMs) have been predicted to support new and exciting domains in the manipulation of light, including novel phase matching schemes for wave mixing. Most notable is the so-cal...
16 March 2007，Naturally occurring materials have a positive index of refraction, whereas a negative-index metamaterial (NIM) has a structure that is engineered artificially to have a negative index of...