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Conferences > UFO > 2023 > Th3 > Th3.5

Tight Focusing in Air of a mJ-class Femtosecond Laser: A Radiation Safety Issue

Simon Vallières, Jeffrey Powell, Tanner Connell, Michael Evans, Sylvain Fourmaux, Stéphane Payeur, Philippe Lassonde, François Fillion-Gourdeau, Steve MacLean, and François Légaré

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Abstract

We present a straightforward method to generate MeV-ranged high dose-rate electron beams in ambient air through the tight focusing of a mJ-class femtosecond laser. We demonstrate that relativistic intensities are reached through an intensity clamping suppression effect and that the technique is promising for performing FLASH radiation therapy.

© 2023 UFOXIII

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