Conical emission from laser filaments and higher-order Kerr effect in air

Details Conical emission from laser filaments and higher-order Kerr effect in air Conical emission from laser filaments and higher-order Kerr effect in air

2011-06-09

arxiv.org/abs/1106.1771v2

Optics Letters 36, 4812 (2011)

Physics

Optics

11 pages, 3 figures, 1 Movie

Scientific paper

10.1364/OL.36.004812

We numerically investigate the conical emission (CE) from ultrashort laser filaments, both considering and disregarding the higher-order Kerr effect (HOKE). While the consideration of HOKE has almost no influence on the predicted CE from collimated beams, differences arise for tightly focused beams. This difference is attributed to the different relative contributions of the non-linear focus and of the modulational instability over the whole filament length.

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