Results 31 to 40 of about 667 (118)
Results in Physics, 2021 This work investigates the nonlinear Schrödinger equation (NLSE) with group velocity dispersion and second order spatiotemporal dispersion coefficients. The governing model is reduced into the classical nonlinear ordinary differential equation.
Haci Mehmet Baskonus +6 more
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Negative Group Velocity Plasmons Propagating in Waveguides Composed of Graphene Metamaterials
IEEE Access, 2020 Fast light which demonstrates negative group velocity, is achieved by the anomalous dispersion or photon tunneling. However, many applications based on the fast light are limited due to the disadvantages of inferior tunability or nonlinear dispersion ...
Liqiang Zhuo +7 more
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Pulse splitting in the anomalous group-velocity-dispersion regime
Optics Express, 2011 We investigate experimentally the role that the initial temporal profile of ultrashort laser pulses has on the self-focusing dynamics in the anomalous group-velocity dispersion (GVD) regime. We observe that pulse-splitting occurs for super-Gaussian pulses, but not for Gaussian pulses.
Samuel E, Schrauth +6 more
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The concentration-velocity dispersion relation in galaxy groups [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 12 pages, 11 figures, published in ...
Faltenbacher, Andreas +1 more
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GROUP VELOCITY DISPERSION CONTROL BY SUSPENDED- CORE SOFT-GLASS FIBER FILLED WITH CARBON DISULFIDE
Tạp chí Khoa học Đại học Đà LạtAn enhanced group velocity dispersion (GVD) control with suspended core fiber (SCF) has been investigated using numerical simulation based on the finite element method.
Tran Bao Tran Le +3 more
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The Astrophysical Journal, 2023 NGC 1052-DF4 was found to be the second “galaxy lacking dark matter” in the NGC 1052 group, based on its velocity dispersion of ${\sigma }_{\mathrm{gc}}={4.2}_{-2.2}^{+4.4}$ km s ^−1 as measured from the radial velocities of seven of its globular ...
Zili Shen +2 more
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Galaxy groups: abundance by luminosity and by velocity dispersion [PDF]
Monthly Notices of the Royal Astronomical Society, 1993 We present a reanalysis of groups in the Center for Astrophysics redshift survey, focusing on properties that can be readily compared with predictions of gravitational clustering theories. The grouping algorithm we employ is optimized using artificial catalogues constructed from N-body simulations that have similar low-order correlations to those of ...
B. Moore, C. S. Frenk, S. D. M. White
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BROADBAND METHOD FOR GROUP VELOCITY DISPERSION MEASUREMENTS IN THE MID-INFRARED
Приборы и методы измерений, 2015 A setup for broadband measurements of dispersion parameter in optical fibers based on the Mach–Zehnder interferometer is developed. Tm-doped fiber pumped at 1.61 μm was used as a source of broadband emission, that allowed to achieve the measurement ...
D. S. Klimentov +3 more
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IEEE Photonics Journal, 2018 We propose a silicon strip waveguide structure with alumina thin-film coating in-between the core and the cladding for group-velocity dispersion tailoring.
Kai Guo +7 more
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APL Photonics, 2023 We report measurements of Kerr nonlinearity and group velocity dispersion in In0.53Ga0.47As/InP and GaAs0.51Sb0.49/InP ridge waveguides in the mid-infrared using four-wave mixing at λ ≈ 5 µm.
Kevin Zhang +2 more
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