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- Title
Sequential femtosecond X-ray imaging.
- Authors
Günther, C. M.; Pfau, B.; Mitzner, R.; Siemer, B.; Roling, S.; Zacharias, H.; Kutz, O.; Rudolph, I.; Schondelmaier, D.; Treusch, R.; Eisebitt, S.
- Abstract
Recording a 'molecular movie' with atomic spatial resolution on the femtosecond timescale set by atomic motion can be considered the ultimate goal of dynamic real-space imaging. Free-electron X-ray lasers, with their (sub)nanometre wavelength, femtosecond pulse duration and high brilliance, fuel the hope that this may ultimately become possible. Single-shot still pictures with sub-100 nm resolution achieved during femtosecond exposures have recently been demonstrated. A femtosecond time-lapse movie requires a sequence of independent images taken with a controllable time delay. As a key step towards achieving a molecular movie, we demonstrate a holographic imaging approach capable of recording two fully independent images with a variable time delay over the entire femtosecond regime. The concept overcomes the fundamental readout time limitations of two-dimensional area detectors, as two subsequent X-ray holograms of a sample can be superimposed within one detector exposure and yet be unambiguously disentangled to reconstruct two independent images.
- Subjects
FEMTOSECOND lasers; X-ray lasers; NANOELECTROMECHANICAL systems; HOLOGRAPHY; MICROSTRUCTURE; PHOTONICS research
- Publication
Nature Photonics, 2011, Vol 5, Issue 2, p99
- ISSN
1749-4885
- Publication type
Article
- DOI
10.1038/nphoton.2010.287