M
Mietek Lisak
Researcher at Chalmers University of Technology
Publications - 305
Citations - 6879
Mietek Lisak is an academic researcher from Chalmers University of Technology. The author has contributed to research in topics: Nonlinear system & Tokamak. The author has an hindex of 41, co-authored 305 publications receiving 6513 citations. Previous affiliations of Mietek Lisak include Budapest University of Technology and Economics.
Papers
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Journal ArticleDOI
Nonlinear asymmetric self-phase modulation and self-steepening of pulses in long optical waveguides
Dan Anderson,Mietek Lisak +1 more
TL;DR: In this article, the authors proposed an extension of the conventional static approximation of the nonlinear terms in the wave equation to include the derivative of the pulse envelope, which may lead to a self-steepening.
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Wave-breaking-free pulses in nonlinear-optical fibers
TL;DR: In this article, the conditions for avoiding wave breaking during pulse propagation in optical fibers were investigated, and it was shown that pulses having a parabolic intensity variation are approximate wave-breaking-free solutions of the nonlinear Schrodinger equation in the high-intensity limit.
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Wave breaking in nonlinear-optical fibers
TL;DR: In this paper, an analytical investigation of the interplay between dispersion and nonlinearity in the creation of wave breaking in optical fibers is made, which involves two independent processes: overtaking of different parts of the pulse and the nonlinear generation of new frequencies during overtaking.
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Variational approach to collapse of optical pulses
TL;DR: In this article, an alternative variational approach is suggested that remedies these deficiencies and gives results in good agreement with numerical results, however, it is found that the predictions for some of the important pulse parameters are qualitatively wrong and could lead to incorrect conclusions.
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Statistical effects in the multistream model for quantum plasmas.
TL;DR: A statistical multistream description of quantum plasmas is formulated, and a Landau-like damping of plane wave perturbations occurs due to the broadening of the background Wigner function that arises as a consequence of statistical variations of the wave function phase.