Results 11 to 20 of about 148,104 (231)
Terahertz nonlinear superconducting metamaterials [PDF]
Applied Physics Letters, 2013 We investigate the nonlinear effect of a planar superconducting metamaterial made from niobium nitride (NbN) at terahertz frequencies. As the variation of the incident intense terahertz field alters the intrinsic conductivity in the NbN, a consequent giant amplitude modulation is observed due to the strong nonlinearities.
Iwao Kawayama +9 more
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Optically thin terahertz metamaterials
Optics Express, 2008 Resonant properties of optically thin metamaterials are studied by terahertz time-domain spectroscopy. Both the lower energy inductor-capacitor (LC) and the higher energy dipole resonances of the planar double split-ring resonators (SRRs) exhibit characteristic evolution with various sub-skin-depth thicknesses of the constituent Pb film.
John F. O'Hara +4 more
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Recent progress in terahertz metamaterial modulators
Nanophotonics, 2022 The terahertz (0.1–10 THz) range represents a fast-evolving research and industrial field. The great interest for this portion of the electromagnetic spectrum, which lies between the photonics and the electronics ranges, stems from the unique and ...
Degl’Innocenti Riccardo +2 more
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Frequency‐Agile Temporal Terahertz Metamaterials [PDF]
Advanced Optical Materials, 2020 Spatiotemporal manipulation of electromagnetic waves has recently enabled a plethora of exotic optical functionalities, such as non‐reciprocity, dynamic wavefront control, unidirectional transmission, linear frequency conversion, and electromagnetic ...
Prakash Pitchappa +8 more
semanticscholar +5 more sources
Broadband terahertz generation from metamaterials [PDF]
Nature Communications, 2014 The terahertz spectral regime, ranging from about 0.1 to 15 THz, is one of the least explored yet most technologically transformative spectral regions.
Chatzakis, Ioannis +6 more
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Flexible and stackable terahertz metamaterials via silver-nanoparticle inkjet printing
AIP Advances, 2018 There is presently much interest in tunable, flexible, or reconfigurable metamaterial structures that work in the terahertz frequency range. They can be useful for a range of applications, including spectroscopy, sensing, imaging, and communications ...
K. Kashiwagi +7 more
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Optically and thermally controlled terahertz metamaterial via transition between direct and indirect electromagnetically induced transparency [PDF]
AIP Advances, 2014 This passage presents a design of tunable terahertz metamaterials via transition between indirect and direct electromagnetically induced transparency (EIT) effects by changing semiconductor InSb’s properties to terahertz wave under optical and thermal ...
Jiawei Sui, Ls Feng
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Dynamic mode coupling in terahertz metamaterials [PDF]
Scientific Reports, 2015 AbstractThe near and far field coupling behavior in plasmonic and metamaterial systems have been extensively studied over last few years. However, most of the coupling mechanisms reported in the past have been passive in nature which actually fail to control the coupling mechanism dynamically in the plasmonic metamaterial lattice array.
Chunmei Ouyang +11 more
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Frontiers in Physics, 2021 The spatiotemporal distribution of terahertz (THz) radiation from plasma has been demonstrated with the technology of THz focal-plane imaging. It has been found that the spatiotemporal distribution will vary with the frequency, as well as the length of ...
Erli Wang +15 more
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Liquid Crystal-Tuned Planar Optics in Terahertz Range
Applied Sciences, 2023 Recently, terahertz waves of higher frequencies compared to microwave and radio frequency have shown great potential in radar detection and high-speed wireless communication. To spatially control the wavefront of terahertz beams, various novel components,
Hongguan Yu +4 more
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