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Long-wave Infrared Megafilaments in Air

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Abstract

We demonstrate self-channeling of a terawatt picosecond CO2 laser beam in air. A single centimeter-diameter megafilament guiding multi-Joule pulse over ~35m is observed. This self-guiding is described by a novel nonlinear propagation and ionization model.

© 2019 The Author(s)

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