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

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

2004-05-17

arxiv.org/abs/physics/0405086v1

Physics

Optics

8 pages, 9 figures

Scientific paper

10.1364/JOSAB.22.000862

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.

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