Spatial coherence characterization of undulator radiation

The coherence properties of undulator radiation at extreme ultraviolet (EW) wavelengths are measured using the Thompson-Wolf two-pinhole method. The effects of asymmetric source size and beamline apertures are observed. High spatial coherence EUV radiation is demonstrated. Projection of these same capabilities to the x-ray region is straightforward. Published by Elsevier Science B.V.