alexa Conical emission, pulse splitting, and X-wave parametric amplification in nonlinear dynamics of ultrashort light pulses.
Physics

Physics

Journal of Lasers, Optics & Photonics

Author(s): Faccio D, Porras MA, Dubietis A, Bragheri F, Couairon A,

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Abstract The precise observation of the angle-frequency spectrum of light filaments in water reveals a scenario incompatible with current models of conical emission (CE). Its description in terms of linear X-wave modes leads us to understand filamentation dynamics requiring a phase- and group-matched, Kerr-driven four-wave-mixing process that involves two highly localized pumps and two X waves. CE and temporal splitting arise naturally as two manifestations of this process. This article was published in Phys Rev Lett and referenced in Journal of Lasers, Optics & Photonics

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