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Chirped-Pulse Amplification in an Echo-Enabled Harmonic-Generation Free-Electron Laser

Authors :
Li Zeng
Xiaofan Wang
Yifan Liang
Huaiqian Yi
Weiqing Zhang
Xueming Yang
Source :
Applied Sciences, Vol 13, Iss 18, p 10292 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

The field of ultrafast science has experienced significant growth over the last decade, largely attributed to advancements in optical and laser technologies such as chirped-pulse amplification and high-harmonic generation. The distinctive characteristics of intense ultrafast free-electron lasers (FELs) have introduced novel prospects for investigating molecular dynamics, as well as providing an opportunity to gain deeper insights into nonlinear processes in materials. Therefore, high-power ultrafast FELs can be widely used for both fundamental research and practical applications. This study presents a novel approach for producing high-power femtosecond FEL pulses, utilizing chirped-pulse amplification in echo-enabled harmonic generation. Chirped seed pulses are employed to induce frequency-chirped energy modulation in the electron beam. The generated FEL pulse, which inherits the chirped frequency, can be compressed through the gratings in the off-plane mount geometry to provide ultraintense ultrafast pulses. The numerical modeling results indicate that peak power exceeding 20 GW and a pulse duration in the order of several femtoseconds can be achieved.

Details

Language :
English
ISSN :
20763417
Volume :
13
Issue :
18
Database :
Directory of Open Access Journals
Journal :
Applied Sciences
Publication Type :
Academic Journal
Accession number :
edsdoj.01c2b0276140dab7f7c19c1e12b019
Document Type :
article
Full Text :
https://doi.org/10.3390/app131810292