Author
V. I. Talanov
Bio: V. I. Talanov is an academic researcher. The author has an hindex of 1, co-authored 1 publications receiving 123 citations.
Papers
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888 citations
TL;DR: In this paper, the collapse of self-focusing waves described by the nonlinear Schrodinger (NLS) equation and the Zakharov equations in nonlinear optics and plasma turbulence is reviewed.
641 citations
TL;DR: In this article, the authors investigated white-light continuum generation and self-focusing by 140-fs Ti:sapphire laser pulses in extended transparent media and found that both phenomena depend on the medium's bandgap.
Abstract: We report an investigation of white-light continuum generation and self-focusing by 140-fs Ti:sapphire laser pulses in extended transparent media. It is found that continuum generation is triggered by self-focusing and that both phenomena depend on the medium’s bandgap. There is a bandgap threshold for continuum generation. Above that threshold the continuum’s width increases with increasing bandgap. Furthermore, the beam’s self-focal diameter is discontinuous across the threshold. To explain the observations a mechanism is proposed that involves multiphoton excitation of electrons into the conduction band at the self-focus; the generated free electrons cause spectral superbroadening and limit the self-focal diameter. The continuum beam’s surprisingly low divergence is then investigated and explained in terms of a Kerr lensing effect.
463 citations
TL;DR: In this paper, the stability of solitons is reviewed for nonlinear conservative media and the main attention is paid to the description of the methods: perturbation theory, inverse scattering transform, Lyapunov method.
399 citations
TL;DR: In this paper, the authors present an overview of nonlinear phenomena related to optical quadratic solitons, i.e., intrinsically multicomponent localized states of light, which can exist in media without inversion symmetry at the molecular level.
384 citations