The recent development of Bragg–Fresnel crystal optics. Experiments and applications at the ESRF (invited)

Bragg–Fresnel optics shows excellent compatibility with ESRF sources and is capable of obtaining monochromatic submicron focal spots with 108–109 photons/s in an energy bandwidth of 10−4–10−6 and in a photon energy range between 6–100 keV. Microprobe and microimaging techniques based on Bragg–Fresnel optics have been realized at the ESRF beamlines.