Articles with "focusing defocusing" as a keyword



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Intermixed Time-Dependent Self-Focusing and Defocusing Nonlinearities in Polymer Solutions

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Published in 2022 at "ACS Photonics"

DOI: 10.1021/acsphotonics.1c01917

Abstract: Low-power visible light can lead to spectacular nonlinear effects in soft-matter systems. The propagation of visible light through transparent solutions of certain polymers can experience either self-focusing or defocusing nonlinearity, depending on the solvent. We… read more here.

Keywords: intermixed time; focusing defocusing; defocusing nonlinearities; self ... See more keywords
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Stability and modulation of optical peakons in self-focusing/defocusing Kerr nonlinear media with PT-δ-hyperbolic-function potentials.

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Published in 2022 at "Chaos"

DOI: 10.1063/5.0080485

Abstract: In this paper, we introduce a class of novel PT- δ-hyperbolic-function potentials composed of the Dirac δ(x) and hyperbolic functions, supporting fully real energy spectra in the non-Hermitian Hamiltonian. The threshold curves of PT symmetry… read more here.

Keywords: kerr nonlinear; function potentials; hyperbolic function; self focusing ... See more keywords