FEL Pulse Duration Evolution along Undulators at FLASH

Autor: Mahdi M. Bidhendi, Ivette J. Bermudez Macias, Rosen Ivanov, Mikhail V. Yurkov, Stefan Düsterer
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Applied Sciences, Vol 12, Iss 14, p 7048 (2022)
Druh dokumentu: article
ISSN: 2076-3417
DOI: 10.3390/app12147048
Popis: Self-amplified spontaneous-emission (SASE) free-electron lasers (FELs) deliver ultrashort pulses with femtosecond durations. Due to the fluctuating nature of the radiation properties of SASE FELs, characterizing FEL pulses on a single-shot basis is necessary. Therefore, we use terahertz streaking to characterize the temporal properties of ultrashort extreme ultraviolet pulses from the free-electron laser in Hamburg (FLASH). In this study, pulse duration as well as pulse energy are measured in a wavelength range from 8 to 34 nm as functions of undulators contributing to the lasing process. The results are compared to one-dimensional and three-dimensional, time-dependent FEL simulations.
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