Tomographic diffractometry of laser-induced plasma formations

A sensitive optical diffractometry method is developed and utilized for advanced tomography of laser-induced air plasma formations. Using transverse diffractometry and Supergaussian plasma distribution modelling we extract the main parameters of the plasma being the plasma density, width and shape w...

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Bibliographic Details
Published inarXiv.org
Main Authors Ostrovsky, Ivan, Hurvitz, Gilad, Bograd, Eli, Flaxer, Eli, Hazra, Soumitra, Fleischer, Sharly
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 05.08.2024
Subjects
Air plasma
Diffraction patterns
Laser plasmas
Nonlinear dynamics
Parameter identification
Parameter sensitivity
Plasma density
Spatial resolution
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Summary:A sensitive optical diffractometry method is developed and utilized for advanced tomography of laser-induced air plasma formations. Using transverse diffractometry and Supergaussian plasma distribution modelling we extract the main parameters of the plasma being the plasma density, width and shape with 20 micrometer spatial resolution throughout the plasma formation. The experimentally recorded diffraction patterns fitted by the Supergaussian plasma model are found to capture unprecedentedly delicate traits in the evolution of the plasma from its effective birth and on. Key features in the spatial evolution of the plasma such as the 'escape position', the 'turning point' and the refocusing dynamics of the beam are identified and explored in details. Our work provides experimental and theoretical access into the highly nonlinear dynamics of laser-induced air plasma.
ISSN:2331-8422