Results 11 to 20 of about 644,625 (390)
Gate-tunable negative refraction of mid-infrared polaritons [PDF]
Science, 2022 Negative refraction provides a platform to manipulate mid-infrared and terahertz radiation for molecular sensing and thermal emission applications. However, its implementation based on metamaterials and plasmonic media presents challenges with optical ...
Hai Hu +13 more
semanticscholar +1 more source
Negative refraction in hyperbolic hetero-bicrystals [PDF]
Science, 2022 We visualized negative refraction of phonon polaritons, which occurs at the interface between two natural crystals. The polaritons—hybrids of infrared photons and lattice vibrations—form collimated rays that display negative refraction when passing ...
A. Sternbach +14 more
semanticscholar +1 more source
Negative refraction makes a perfect lens [PDF]
Physical Review Letters, 2000 With a conventional lens sharpness of the image is always limited by the wavelength of light. An unconventional alternative to a lens, a slab of negative refractive index material, has the power to focus all Fourier components of a 2D image, even those ...
JB Pendry
semanticscholar +1 more source
Refraction in Media with a Negative Refractive Index [PDF]
Physical Review Letters, 2003 5 pages, 4 figures, submitted to Phys.
Stavroula Foteinopoulou +2 more
openaire +4 more sources
American Journal of Physics, 2011 Refraction, interference, and diffraction are distinguishing features of wavelike phenomena. Although they are usually associated only with a purely spatial wave-propagation pattern, analogs to interference and diffraction involving the spatio-temporal dynamics of waves in one dimension have been discussed.
Jääskeläinen, Markku +2 more
openaire +5 more sources
Terahertz Metamaterials for Linear Polarization Conversion and Anomalous Refraction [PDF]
Science, 2013 Converting Polarization The conversion of a light signal from one polarization direction to another plays an important role in communication and metrology. The components that are presently used for polarization conversion, however, tend to be relatively
N. Grady +8 more
semanticscholar +1 more source
Superboost transitions, refraction memory and super-Lorentz charge algebra [PDF]
Journal of High Energy Physics, 2018 A bstractWe derive a closed-form expression of the orbit of Minkowski spacetime under arbitrary Diff(S2) super-Lorentz transformations and supertranslations. Such vacua are labelled by the superboost, superrotation and supertranslation fields.
G. Compère +2 more
semanticscholar +1 more source
Broadband frequency translation through time refraction in an epsilon-near-zero material
Nature Communications, 2020 Space-time duality in paraxial optical wave propagation implies the existence of intriguing effects when light interacts with a material exhibiting two refractive indexes separated by a boundary in time.
Yiyu Zhou +7 more
semanticscholar +1 more source
Anomalous refraction of optical spacetime wave packets [PDF]
Nature Photonics, 2019 Refraction at the interface between two materials is fundamental to the interaction of light with photonic devices and to the propagation of light through the atmosphere at large1. Underpinning the traditional rules for the refraction of an optical field
Basanta Bhaduri +2 more
semanticscholar +1 more source