One-dimensional hard x-ray field retrieval using a moveable structure.
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.
Guizar-Sicairos
Manuel
M
The Institute of Optics, University of Rochester, Rochester, New York 14627, USA. manuel.guizar-sicairos@psi.ch
Evans-Lutterodt
Kenneth
K
Isakovic
Abdel F
AF
Stein
Aaron
A
Warren
John B
JB
Sandy
Alec R
AR
Narayanan
Suresh
S
Fienup
James R
JR
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