Light-field streaking for FELs

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Erscheinungsjahr:
2011
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Text
Beschreibung:
  • Free-electron lasers provide intense femtosecond radiation pulses with wavelengths in the extreme ultraviolet to x-ray range. Due to the stochastic nature of the light generation scheme, based on self-amplified spontaneous emission, the duration and temporal profile fluctuate from shot to shot. The temporal profile can be measured in a single-shot experiment by light-field streaking, where an infrared light field is used to accelerate photoelectrons generated by the x-ray pulse. The photoelectron energy change depends on the phase of the infrared field at the time of ionization. This technique is extensively used in attosecond metrology where near-infrared streaking fields are employed for the temporal characterization of attosecond XUV pulses. Here, it is adapted for the analysis of pulse durations in the femtosecond range by choosing far-infrared (terahertz) streaking fields. © 2011 IOP Publishing Ltd.
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  • info:eu-repo/semantics/closedAccess
Quellsystem:
Forschungsinformationssystem der UHH
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oai:www.edit.fis.uni-hamburg.de:publications/8f06c87d-f069-4483-86cb-0df5aa33a22f