6 papers
Mutually phase-stable tunable attosecond soft X-ray attosecond pulses from a free-electron laser
River Robles, Kurtis Borne, Mathew Britton +16
We demonstrate the production of mutually phase-stable attosecond X-ray pulse pairs with tunable relative time delays and phases in a cascaded X-ray free-electron laser. We showcas…
Broadband hard X-ray attosecond pulses from extremely chirped electron beams
River Robles, Veronica Guo, David Cesar +10
Attosecond pulses from free-electron lasers have opened the doors to atomic site-specific studies of bound electronic dynamics on their natural, sub-femtosecond timescales. Key to…
Advanced Control of Electron Beams: Tailoring X-ray Production with Programmable Laser Shaping
Jack Hirschman, Randy Lemons, Hao Zhang +23
Leveraging the full scientific capabilities of next-generation high-repetition-rate free-electron lasers requires programmable control over electron-beam properties at their source…
Experimental demonstration of attosecond hard X-ray pulses
Ichiro Inoue, River Robles, Aliaksei Halavanau +24
We present the first direct experimental confirmation of attosecond pulse generation in the hard X-ray regime with a free-electron laser. Our experiment is based on measurements of…
Reversible Electron-Beam Patterning of Colloidal Nanoparticles at Fluid Interfaces
Jonathan G. Raybin, Ethan J. Dunsworth, Veronica Guo +1
The directed self-assembly of colloidal nanoparticles (NPs) using external fields guides the formation of sophisticated hierarchical materials but becomes less effective with decre…
Spectrotemporal shaping of attosecond x-ray pulses with a fresh-slice free-electron laser
River R. Robles, Kirk A. Larsen, David Cesar +14
We propose a scheme allowing coherent shaping, i.e., controlling both the amplitude and phase, of attosecond x-ray pulses at free-electron lasers. We show that by seeding an FEL wi…