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Megafilaments in the mid-infrared

Focusing short CO2 laser pulses into air reveals rich ionization physics that is best explained by solid-state theories and results in centimetre-scale-diameter megafilaments that transport joules of energy.

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Fig. 1: Optical filamentation is often accompanied by supercontinuum generation, which can encompass large wavelength ranges from the mid-infrared into the visible.


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Correspondence to Günter Steinmeyer.

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Steinmeyer, G. Megafilaments in the mid-infrared. Nature Photon 13, 7–8 (2019).

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