January 2008, to be published in Physical Review B1


Fresnel diffractive imaging: Experimental study of coherence and curvature
L. W. Whitehead, G. J. Williams, H. M. Quiney, K. A. Nugent, A. G. Peele, D. Paterson, M. D. de Jonge, and I. McNulty

A Fresnel Coherent Diffractive Imaging experiment is performed using a pinhole as a test object. The experimental parameters of beam curvature and coherence length of the illuminating radiation are varied to investigate their effects on the reconstruction process. It is found that a sufficient amount of curvature across the sample strongly ameliorates the effects of low coherence, even when the sample size exceeds the coherence length.

© 2008 The American Physical Society.