Far-field spectral characterization of conical emission and filamentation in Kerr media

Abstract

By use of an imaging spectrometer we map the far-field ($\theta -\lambda$) spectra of 200 fs optical pulses that have undergone beam collapse and filamentation in a Kerr medium. By studying the evolution of the spectra with increasing input power and using a model based on stationary linear asymptotic wave modes, we are able to trace a consistent model of optical beam collapse high-lighting the interplay between conical emission, multiple pulse splitting and other effects such as spatial chirp.

arXiv comment8 pages, 9 figures

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• Dynamic Nonlinear X-waves for Femtosecond Pulse Propagation in Water
• Light Filaments Without Self Guiding
• Localized and stationary light wave modes in dispersive media
• Coloured conical emission via second-harmonic generation
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Cited by in corpus (4)

• Ultrashort filaments of light in weakly-ionized, optically-transparent media
• Conical emission, pulse splitting and X-wave parametric amplification in nonlinear dynamics of ultrashort light pulses
• Conical emission from laser filaments and higher-order Kerr effect in air
• X and Y waves in the spatiotemporal Kerr dynamics of a self-guided light beam