20-21 November 2014
National Centre for Synchrotron Science
Australia/Melbourne timezone
Save the date: User Meeting 2015 - 26-27 November

Experimental Recovery of Sample And Coherence Information in Coherent Diffractive Imaging

20 Nov 2014, 17:30
1h 30m
NCSS Exhibition Area ()

NCSS Exhibition Area

Australian Synchrotron 800 Blackburn Road Clayton VIC 3168
Board: 607


Mr Giang Tran (La Trobe University)


Coherent diffractive imaging (CDI) is a powerful method for recovering the transmission function of an object from its far-field diffraction pattern using iterative algorithms [1]. Recently, it has been shown that CDI works with partially coherent beam [2]. Methods have been developed for dealing with CDI data for which the coherence properties of the illumination are unkown [3]. In this work, we develop a method to simultaneously recover the object’s phase and characterise the coherence properties of the illuminating wavefield without any a priori knowledge. The validity of our method is demonstrated using experimental diffraction data from the Soft X-ray Imaging beamline. References [1] J. R. Fienup, “Phase retrieval algorithms: a comparison,” Appl. Opt. 21(15), 2758–2769 (1982). [2] L. W. Whitehead, G. J. Williams, H. M. Quiney, D. J. Vine, R. A. Dilanian, S. Flewett, K. A. Nugent, A. G. Peele, E. Balaur, and I. McNulty, “Diffractive Imaging Using Partially Coherent X Rays”, Phys. Rev. Lett. 103, 243902 (2009). [3] Pierre Thibault, Andreas Menzel, “ Reconstructing state mixtures from diffraction measurements”, Nature, Vol 494, 68-71, 07 February 2013.
Keywords or phrases (comma separated) coherent diffractive imaging, Fresnel coherent diffractive imaging, partial coherence

Primary author

Mr Giang Tran (La Trobe University)


Prof. Andrew Peele (Australian Synchrotron) Dr Chanh Tran (La Trobe University) Dr Grant van Riessen (La Trobe University)

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