Microfocus Cu K(alpha) source for femtosecond x-ray science
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Updated: Aug 16, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
Nickolai Zhavoronkov1, Yuri Gritsai, Matias Bargheer
1Max-Born-Institute, Max-Born-Strasse 2 A, 12489 Berlin, Germany. zhavoron@mbi-berlin.de
Abstract:
We demonstrate a subpicosecond 1 kHz femtosecond x-ray source with a well-accessible quasi-point size (10 microm diameter) providing Cu K(alpha) emission with a maximum flux of 6.8 x 10(10) photons/s for continuous operation of 10 h. A new geometry that essentially facilitates the adjustment and diminishes the temporal jitter between the x-ray probe and the laser pump pulse is implemented for time-resolved diffraction experiments.
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