title: One-dimensional hard x-ray field retrieval using a moveable structure.
abstract: We present a technique that allows measuring the field of an x-ray line focus using far-field intensity measurements only. One-dimensional phase retrieval with transverse translation diversity is used to recover a hard x-ray beam focused by a compound kinoform lens. The reconstruction is found to be in good agreement with independent knife-edge scan measurements taken at separated planes. The approach avoids the need for measuring the beam profile at focus and allows narrower beams to be measured than the traditional knife-edge scan.
authors: The Institute of Optics, University of Rochester, Rochester, New York 14627, USA. manuel.guizar-sicairos@psi.ch
authors: Manuel
authors: M
authors: Guizar-Sicairos
authors: Kenneth
authors: K
authors: Evans-Lutterodt
authors: Abdel F
authors: AF
authors: Isakovic
authors: Aaron
authors: A
authors: Stein
authors: John B
authors: JB
authors: Warren
authors: Alec R
authors: AR
authors: Sandy
authors: Suresh
authors: S
authors: Narayanan
authors: James R
authors: JR
authors: Fienup
mesh_terms: D000465:Algorithms; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation* / Q000379:methods*; D007834:Lasers; D046529:Microscopy, Electron, Transmission / Q000295:instrumentation* / Q000379:methods*; D012542:Scattering, Radiation; D014466:Ultraviolet Rays; D014965:X-Rays