Dynamics of Gas Ionization by Laser Pulses with Different Envelope Shapes

Author:

Emelina Anna1,Laryushin Ivan12ORCID,Romanov Alexander12ORCID

Affiliation:

1. A.V. Gaponov-Grekhov Institute of Applied Physics (IAP RAS), 603950 Nizhny Novgorod, Russia

2. Department of Electrodynamics, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia

Abstract

The properties of the dynamics of gas ionization under the action of femtosecond ionizing laser pulses with various envelope shapes are studied. It is shown that the duration of ionization in the saturation regime (at a high final degree of ionization) can either increase or decrease with an increase in the peak intensity of the ionizing pulse, depending on the shape of its envelope. We also determined the influence of the pulse shape on the spectrum of Brunel harmonics and the terahertz yield when two-color pulses are used.

Funder

Russian Science Foundation

Publisher

MDPI AG

Subject

Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics

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