title: A method of hard X-ray phase-shifting digital holography.
abstract: A new method of phase-shifting digital holography is demonstrated in the hard X-ray region. An in-line-type phase-shifting holography setup was installed in a 6.80 keV hard X-ray synchrotron beamline. By placing a phase plate consisting of a hole and a band at the focusing point of a Fresnel lens, the relative phase of the reference and objective beams could be successfully shifted for use with a three-step phase-shift algorithm. The system was verified by measuring the shape of a gold test pattern and a silica sphere.
authors.affiliation: Department of Physics, POSTECH, 77 Cheongam-Ro, Pohang, Kyoungbuk 37673, South Korea.
authors.forename: So Yeong
authors.initials: SY
authors.lastname: Park
authors.affiliation: Department of Physics, POSTECH, 77 Cheongam-Ro, Pohang, Kyoungbuk 37673, South Korea.
authors.forename: Chung Ki
authors.initials: CK
authors.lastname: Hong
authors.affiliation: Beamline Division, Pohang Light Source, Pohang, Kyoungbuk 37673, South Korea.
authors.forename: Jun
authors.initials: J
authors.lastname: Lim
keywords: X-ray imaging; digital holography; phase measurement; phase-shifting microscopy