Attosecond Transient Absorption Spooktroscopy: a ghost imaging approach to ultrafast absorption spectroscopy

Abstract

The recent demonstration of isolated attosecond pulses from an X-ray free-electron laser (XFEL) opens the possibility for probing ultrafast electron dynamics at X-ray wavelengths. An established experimental method for probing ultrafast dynamics is X-ray transient absorption spectroscopy, where the X-ray absorption spectrum is measured by scanning the central photon energy and recording the resultant photoproducts. The spectral bandwidth inherent to attosecond pulses is wide compared to the resonant features typically probed, which generally precludes the application of this technique in the attosecond regime. In this paper we propose and demonstrate a new technique to conduct transient absorption spectroscopy with broad bandwidth attosecond pulses with the aid of ghost imaging, recovering sub-bandwidth resolution in photoproduct-based absorption measurements.

13 pages, 3 figures

References in corpus (6)

• Tunable Isolated Attosecond X-ray Pulses with Gigawatt Peak Power from a Free-Electron Laser
• Fourier-transform Ghost Imaging with Hard X-rays
• Infrared Spectroscopy with Visible Light
• Experimental x-ray ghost imaging
• Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption
• Ghost Imaging with Atoms

Cited by in corpus (13)

• Atomic, molecular and optical physics applications of longitudinally coherent and narrow bandwidth Free-Electron Lasers
• Source noise suppression in attosecond transient absorption spectroscopy by edge-pixel referencing
• Electron beam shaping via laser heater temporal shaping
• High temporal and spectral resolution of stimulated x-ray Raman signals with stochastic free-electron-laser pulses
• Molecular Frame Photoelectron Angular Distributions in Polyatomic Molecules from Lab Frame Coherent Rotational Wavepacket Evolution
• The Time-resolved Atomic, Molecular and Optical Science Instrument at the Linac Coherent Light Source
• Ultrafast transfer and transient entrapment of photoexcited Mg electron in Mg@C60
• Real-Space Inversion and Super-Resolution of Ultrafast Scattering
• Artificial intelligence for online characterization of ultrashort X-ray free-electron laser pulses
• High-resolution absorption measurements with free-electron lasers using ghost spectroscopy
• Resonant Double-Core Excitations with Ultrafast, Intense Pulses
• FEL stochastic spectroscopy revealing silicon bond softening dynamics
• Photon Energy-Resolved Velocity Map Imaging from Spectral Domain Ghost Imaging