Laser plasma

Generation of short-wavelength attopulses in a laser plasma and their amplification using a free-electron laser

A. A. Andreev^ab, K. Yu. Platonov<sup>c

a</sup> St. Petersburg State University, Faculty of Physics
^b Ioffe Institute, St. Petersburg
^c Peter the Great St. Petersburg Polytechnic University

Abstract: The paper examines the generation of an ultrashort pulse in a laser plasma and its amplification using a free-electron laser undulator during interaction with a relativistic electron bunch, including that produced by a petawatt laser. The goal of this study is to determine the system parameters that enable the generation and significant amplification of ultrashort pulses, with durations down to an attosecond.

Keywords: ultrashort laser pulse, laser plasma, free-electron laser, relativistic electron bunch, pulse amplification.

Received: 02.04.2025
Revised: 18.05.2025
Accepted: 28.05.2025

 English version: Quantum Electronics, 2025, 52:suppl. 7, S715–S725