Time-resolved characterization of ultrafast electrons in intense laser and metallic-dielectric target interaction

M. Galletti*, F. G. Bisesto, M. P. Anania, M. Ferrario, R. Pompili, A. Poyé, A. Zigler

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

High-intensity ultrashort laser pulses interacting with thin solid targets are able to produce energetic ion beams by means of extremely large accelerating fields set by the energetic ejected electrons. The characterization of such electrons is thus important in view of a complete understanding of the acceleration process. Here, we present a complete temporal-resolved characterization of the fastest escaping hot electron component for different target materials and thicknesses, using temporal diagnostics based on electro-optical sampling with 100 fs temporal resolution. Experimental evidence of scaling laws for ultrafast electron beam parameters have been retrieved with respect to the impinging laser energy (0.4–4 J range) and to the target material, and an empirical law determining the beam parameters as a function of the target thickness is presented.

Original languageEnglish
Pages (from-to)4420-4423
Number of pages4
JournalOptics Letters
Volume45
Issue number16
DOIs
StatePublished - 15 Aug 2020

Bibliographical note

Publisher Copyright:
© 2020 Optical Society of America

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