title: Perfect X-ray focusing via fitting corrective glasses to aberrated optics.
abstract: Due to their short wavelength, X-rays can in principle be focused down to a few nanometres and below. At the same time, it is this short wavelength that puts stringent requirements on X-ray optics and their metrology. Both are limited by today's technology. In this work, we present accurate at wavelength measurements of residual aberrations of a refractive X-ray lens using ptychography to manufacture a corrective phase plate. Together with the fitted phase plate the optics shows diffraction-limited performance, generating a nearly Gaussian beam profile with a Strehl ratio above 0.8. This scheme can be applied to any other focusing optics, thus solving the X-ray optical problem at synchrotron radiation sources and X-ray free-electron lasers.
authors.affiliation: Institute of Structural Physics, Technische Universität Dresden, 01062 Dresden, Germany.
authors.forename: Frank
authors.initials: F
authors.lastname: Seiboth
authors.affiliation: Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Schropp
authors.affiliation: Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: Maria
authors.initials: M
authors.lastname: Scholz
authors.affiliation: Institute of Structural Physics, Technische Universität Dresden, 01062 Dresden, Germany.|Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: Felix
authors.initials: F
authors.lastname: Wittwer
authors.affiliation: Institute of Optics and Quantum Electronics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.|Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
authors.forename: Christian
authors.initials: C
authors.lastname: Rödel
authors.affiliation: Institute of Optics and Quantum Electronics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Wünsche
authors.affiliation: Institute of Applied Physics, Friedrich-Schiller-Universität Jena, Albert-Einstein-Straße 15, 07745 Jena, Germany.
authors.forename: Tobias
authors.initials: T
authors.lastname: Ullsperger
authors.affiliation: Institute of Applied Physics, Friedrich-Schiller-Universität Jena, Albert-Einstein-Straße 15, 07745 Jena, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Nolte
authors.affiliation: KTH Royal Institute of Technology, Biomedical and X-ray Physics, Albanova University Center, 106 91 Stockholm, Sweden.
authors.forename: Jussi
authors.initials: J
authors.lastname: Rahomäki
authors.affiliation: KTH Royal Institute of Technology, Biomedical and X-ray Physics, Albanova University Center, 106 91 Stockholm, Sweden.
authors.forename: Karolis
authors.identifier: 0000-0001-7569-9408
authors.initials: K
authors.lastname: Parfeniukas
authors.affiliation: KTH Royal Institute of Technology, Biomedical and X-ray Physics, Albanova University Center, 106 91 Stockholm, Sweden.
authors.forename: Stylianos
authors.initials: S
authors.lastname: Giakoumidis
authors.affiliation: KTH Royal Institute of Technology, Biomedical and X-ray Physics, Albanova University Center, 106 91 Stockholm, Sweden.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Vogt
authors.affiliation: Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Wagner
authors.affiliation: Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK.
authors.forename: Christoph
authors.initials: C
authors.lastname: Rau
authors.affiliation: Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: Ulrike
authors.initials: U
authors.lastname: Boesenberg
authors.affiliation: Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: Jan
authors.initials: J
authors.lastname: Garrevoet
authors.affiliation: Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: Gerald
authors.initials: G
authors.lastname: Falkenberg
authors.affiliation: Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
authors.forename: Eric C
authors.initials: EC
authors.lastname: Galtier
authors.affiliation: Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
authors.forename: Hae
authors.initials: H
authors.lastname: Ja Lee
authors.affiliation: Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
authors.forename: Bob
authors.initials: B
authors.lastname: Nagler
authors.affiliation: Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.|Department Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors.forename: Christian G
authors.initials: CG
authors.lastname: Schroer