On the conformable nonlinear schrödinger equation with second order spatiotemporal and group velocity dispersion coefficients
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Journal of Physics"
DOI: 10.1016/j.cjph.2021.01.012
Abstract: Abstract In this paper, exact traveling wave solutions of the conformable differential equations have been examined. By means of the wave transformation and properties of the conformable derivative (CV), conformable nonlinear Schrodinger equation (CNLSE) has… read more here.
Keywords: conformable nonlinear; order; group velocity; equation ... See more keywords
Self‐action of propagating and standing Lamb waves in the plates exhibiting hysteretic nonlinearity: Nonlinear zero‐group velocity modes
Sign Up to like & getrecommendations! Published in 2017 at "Ultrasonics"
DOI: 10.1016/j.ultras.2017.04.010
Abstract: HIGHLIGHTSLamb waves in plates exhibiting hysteretic quadratic nonlinearity.Self‐induced velocity dispersion and absorption in symmetric and antisymmetric Lamb waves.Shift of the zero group velocity points positions in dispersion of finite amplitude Lamb waves.Temporal dynamics of the… read more here.
Keywords: lamb waves; zero group; nonlinearity; standing lamb ... See more keywords
Optical space-time wave packets having arbitrary group velocities in free space
Sign Up to like & getrecommendations! Published in 2019 at "Nature Communications"
DOI: 10.1038/s41467-019-08735-8
Abstract: Controlling the group velocity of an optical pulse typically requires traversing a material or structure whose dispersion is judiciously crafted. Alternatively, the group velocity can be modified in free space by spatially structuring the beam… read more here.
Keywords: space; group; group velocity; group velocities ... See more keywords
Type-I hyperbolic metasurfaces for highly-squeezed designer polaritons with negative group velocity
Sign Up to like & getrecommendations! Published in 2019 at "Nature Communications"
DOI: 10.1038/s41467-019-10027-0
Abstract: Hyperbolic polaritons in van der Waals materials and metamaterial heterostructures provide unprecedented control over light-matter interaction at extreme nanoscales. Here we propose a concept of type-I hyperbolic metasurface supporting highly-squeezed magnetic designer polaritons, which act… read more here.
Keywords: designer; group velocity; highly squeezed; type hyperbolic ... See more keywords
Anomalous refraction of optical spacetime wave packets
Sign Up to like & getrecommendations! Published in 2019 at "Nature Photonics"
DOI: 10.1038/s41566-020-0645-6
Abstract: 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 large 1 . Underpinning the traditional rules for… read more here.
Keywords: spacetime wave; refraction; group velocity; refraction optical ... See more keywords
Group-velocity-locked vector soliton molecules in fiber lasers
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-02482-w
Abstract: Physics phenomena of multi-soliton complexes have enriched the life of dissipative solitons in fiber lasers. By developing a birefringence-enhanced fiber laser, we report the first experimental observation of group-velocity-locked vector soliton (GVLVS) molecules. The birefringence-enhanced… read more here.
Keywords: fiber lasers; group velocity; locked vector; soliton ... See more keywords
Low thermal conductivity of complex thermoelectric barium silicide film epitaxially grown on Si
Sign Up to like & getrecommendations! Published in 2021 at "Applied Physics Letters"
DOI: 10.1063/5.0063531
Abstract: We achieved substantially low thermal conductivity by introducing some crystal disorder into complex material BaSi2 films on Si substrates for realization of a high-performance thermoelectric material. The BaSi2 films/Si exhibited a low thermal conductivity of… read more here.
Keywords: low thermal; thermal conductivity; phonon group; group velocity ... See more keywords
Continuous variable multimode quantum states via symmetric group velocity matching
Sign Up to like & getrecommendations! Published in 2021 at "New Journal of Physics"
DOI: 10.1088/1367-2630/abef96
Abstract: Configurable and scalable continuous variable (CV) quantum networks for measurement-based quantum information protocols or multipartite quantum communication schemes can be obtained via parametric down conversion (PDC) in non-linear waveguides. In this work, we exploit symmetric… read more here.
Keywords: quantum; continuous variable; group velocity; velocity matching ... See more keywords
Crust and uppermost-mantle structure of Greenland and the Northwest Atlantic from Rayleigh wave group velocity tomography
Sign Up to like & getrecommendations! Published in 2018 at "Geophysical Journal International"
DOI: 10.1093/gji/ggx479
Abstract: The Greenland landmass preserves ∼4 billion years of tectonic history, but much of the continent is inaccessible to geological study due to the extensive inland ice cap. We map out, for the first time, the… read more here.
Keywords: rayleigh wave; velocity; group velocity; greenland ... See more keywords
Approach for Temperature-Sensitivity Enhancement in a Tapered Dual-Core As2Se3-PMMA Fiber With an Antisymmetric Long-Period Grating
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2848466
Abstract: We propose and demonstrate an approach for temperature-sensitivity enhancement based on effective group-velocity matching between the even and odd modes of a dual-core As2Se3-PMMA fiber taper on which an antisymmetric long-period grating is inscribed. The… read more here.
Keywords: group velocity; core; sensitivity; velocity matching ... See more keywords
Does group velocity always reflect elastic modulus in shear wave elastography?
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Biomedical Optics"
DOI: 10.1117/1.jbo.24.7.076003
Abstract: Abstract. Dynamic elastography is an attractive method to evaluate tissue biomechanical properties. Recently, it was extended from US- and MR-based modalities to optical ones, such as optical coherence tomography for three-dimensional (3-D) imaging of propagating… read more here.
Keywords: elastic modulus; group velocity; group; shear wave ... See more keywords