Femtosecond multimodal imaging with a laser-driven X-ray source

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Abstract
Laser-plasma accelerators are compact linear accelerators based on the interaction of high-power lasers with plasma to form accelerating structures up to 1000 times smaller than standard radiofrequency cavities, and they come with an embedded X-ray source, namely betatron source, with unique properties: small source size and femtosecond pulse duration. A still unexplored possibility to exploit the betatron source comes from combining it with imaging methods able to encode multiple information like transmission and phase into a single-shot acquisition approach. In this work, we combine edge illumination-beam tracking (EI-BT) with a betatron X-ray source and present the demonstration of multimodal imaging (transmission, refraction, and scattering) with a compact light source down to the femtosecond timescale. The advantage of EI-BT is that it allows multimodal X-ray imaging technique, granting access to transmission, refraction and scattering signals from standard low-coherence laboratory X-ray sources in a single shot.
Funding Information
  • Royal Academy of Engineering (CiET1819\2\78)
  • RCUK | Engineering and Physical Sciences Research Council (EP/T005408)
  • RCUK | Science and Technology Facilities Council (ST/V001639/1)
  • Wellcome Trust (221367/Z/20/Z)

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