Single-optical-element soft-x-ray interferometry with a laser-plasma x-ray source

Ulrich Vogt, Magnus Lindblom, Per A.C. Jansson, Tomi T. Tuohimaa, Anders Holmberg, Hans M. Hertz, Marek Wieland, Thomas Wilhein
2005 Optics Letters  
We report on a compact interferometer for the water-window soft-x-ray range that is suitable for operation with laser-plasma sources. The interferometer consists of a single diffractive optical element that focuses impinging x rays to two focal spots. The light from these two secondary sources forms the interference pattern. The interferometer was operated with a liquid-nitrogen jet laser-plasma source at = 2.88 nm. Scalar wave-field propagation was used to simulate the interference pattern,
more » ... wing good correspondence between theoretical and experimental results. The diffractive optical element can simultaneously be used as an imaging optic, and we demonstrate soft-x-ray microscopy with interferometric contrast enhancement of a phase object.
doi:10.1364/ol.30.002167 pmid:16127945 fatcat:i4q3vbswdzg4biuwhe7nrr4ow4