Phase retrieval in x-ray lensless holography by reference beam tuning
Optics Letters, Vol. 34, Issue 17, pp. 2604-2606 (2009)
http://dx.doi.org/10.1364/OL.34.002604
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Abstract
We show the ability to determine the relative phase between the object and a reference scatterer by tuning the overall intensity and phase of the reference wave. The proposed reference-guided phase retrieval algorithm uses the relative phase as a constraint to iteratively reconstruct the object and the reference simultaneously, and thus does not require precisely defined reference structures. The algorithm also features rapid and reliable convergence and overcomes the uniqueness problem. The method is demonstrated by a soft-x-ray coherent imaging experiment that utilizes a large micrometer-sized reference structure that can be turned on and off, yielding an object image with resolution close to the reconstruction pixel size of
© 2009 Optical Society of America
OCIS Codes
(090.0090) Holography : Holography
(100.5070) Image processing : Phase retrieval
(110.7440) Imaging systems : X-ray imaging
(340.7460) X-ray optics : X-ray microscopy
ToC Category:
Imaging Systems
History
Original Manuscript: April 28, 2009
Revised Manuscript: July 21, 2009
Manuscript Accepted: July 29, 2009
Published: August 21, 2009
Citation
Diling Zhu, Benny Wu, Ramon Rick, Joachim Stöhr, and Andreas Scherz, "Phase retrieval in x-ray lensless holography by reference beam tuning," Opt. Lett. 34, 2604-2606 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-17-2604
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