6533b82efe1ef96bd1293300
RESEARCH PRODUCT
Monolithic focused reference beam x-ray holography
Christian M. GüntherJan GeilhufeMathias KläuiS. WernerStefan EisebittStefan EisebittBastian PfauFelix BüttnerStefanie FrömmelS. SchaffertErik GuehrsMichael Schneidersubject
PhysicsMultidisciplinarybusiness.industryHolographyX-rayGeneral Physics and AstronomyGeneral ChemistryZone plateBioinformaticsGeneral Biochemistry Genetics and Molecular BiologyImage contrastArticlelaw.inventionsymbols.namesakeFourier transformOpticslawReference beamsymbolsddc:530businessImage resolutiondescription
Fourier transform holography is a highly efficient and robust imaging method, suitable for single-shot imaging at coherent X-ray sources. In its common implementation, the image contrast is limited by the reference signal generated by a small pinhole aperture. Increased pinhole diameters improve the signal, whereas the resolution is diminished. Here we report a new concept to decouple the spatial resolution from the image contrast by employing a Fresnel zone plate to provide the reference beam. Superimposed on-axis images of distinct foci are separated with a novel algorithm. Our method is insensitive to mechanical drift or vibrations and allows for long integration times common at low-flux facilities like high harmonic generation sources. The application of monolithic focused reference beams improves the efficiency of high-resolution X-ray Fourier transform holography beyond all present approaches and paves the path towards sub-10 nm single-shot X-ray imaging.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-07-26 |