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Diffractive X-ray Optics for Synchrotrons and Free Electron Lasers
(Laboratory for Micro- and Nanotechnology, PSI Switzerland)
E1.173 (Campus Schenefeld XHQ)
Campus Schenefeld XHQ
This presentation will give an overview on developments of X-ray instrumentation and experimental techniques at the Paul Scherrer Institute (PSI) based on diffractive optics. In contrast to other kinds of X-ray optics such as mirrors and lenses, diffractive optics allow for precise control of the optical wave front and the realization of complex optical functionalities. The key challenges lie in the fabrication of the diffractive structures by advanced nanolithography techniques, as they need to provide dimensions and placement accuracies down to the nanometer scale.
Many applications of these devices include X-ray imaging techniques. The X-ray optics developed at PSI provide spatial resolution down to the 10 nm range, and are designed exploit phase contrast mechanisms or spectroscopic information.
For use with X-ray free-electron laser radiation, diffractive optics need to be made from radiation hard materials in order to withstand the extreme radiation loads. We have developed such optics for applications in wave front sensing, nanofocusing, spectral monitoring and time resolved measurements of ultra-fast processes.