Wavelength scaling and multicolor operation of a plasma-driven attosecond x-ray source via harmonic generation

Journal Article · 11 July 2024 · Physical Review Accelerators and Beams

DOI: https://doi.org/10.1103/PhysRevAccelBeams.27.070701 · OSTI ID:2397362

Hessami, Rafi ; Morgan, Jenny; Robles, River ; Larsen, Kirk A. ; Marinelli, Agostino; Emma, Claudio

The generation of high-power coherent soft x-ray pulses of sub-100 as duration and 10 nm wavelength using beams from a GeV energy plasma wakefield accelerator has been recently investigated in Emma []. As a future upgrade to this concept, this contribution investigates scaling to shorter x-ray wavelengths by cascading undulators tuned to higher harmonics of the fundamental. We present two simulation studies for plasma-driven attosecond harmonic generation schemes with final photon wavelengths of 2 and 0.40 nm. We demonstrate in these schemes that using undulators with retuned fundamental frequencies can produce GW-scale pulses of sub-nm radiation with tens of attosecond-scale pulse lengths, an order of magnitude shorter than current state-of-the-art attosecond x-ray free electron lasers (XFELs). This multipulse multicolor operation will be broadly applicable to attosecond pump-probe experiments. Published by the American Physical Society 2024

• Sponsoring Organization: USDOE
• Grant/Contract Number: AC02-76SF00515
• OSTI ID: 2397362
• Alternate ID(s): OSTI ID: 2447206
• Journal Information: Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Journal Issue: 7 Vol. 27; ISSN 2469-9888; ISSN PRABCJ
• Publisher: American Physical SocietyCopyright Statement
• Country of Publication: United States
• Language: English