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Updated: Jun 25, 2026

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
Ionization-induced small-scaled plasma structures in tightly focused ultrashort laser pulses
E S Efimenko1, A V Kim, M Quiroga-Teixeiro
1Institute of Applied Physics, Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.
Abstract:
The laser-matter interaction via optical-field ionization of a medium in a tightly focused ultrashort laser pulse is investigated by finite-difference-time-domain modeling of Maxwell's equations. We show that, unlike in the case of the conventional quasioptical approach, the regime of interaction changes drastically above a certain critical angle of laser beam focusing, resulting in the generation of small-scaled plasma structures which strongly influence the local field distribution and scattering characteristics.
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