Non-iterative coherent diffractive imaging using a phase-shifting reference frame

Details Non-iterative coherent diffractive imaging using a phase-shifting reference frame Non-iterative coherent diffractive imaging using a phase-shifting reference frame

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009njph...11d3021e&link_type=abstract

New Journal of Physics, Volume 11, Issue 4, pp. 043021 (2009).

Physics

1

Scientific paper

Lensless imaging is a high potential and currently intensely targeted research goal, in view of those fields of applications for which aberration-free high-resolution lenses are not available, for example for x-ray imaging. A recently proposed (direct inversion) variant of lensless imaging combines the advantages of two classical routes toward lensless imaging, the high-resolution characteristics of iterative object reconstruction, and the direct and deterministic nature of holographic reconstruction. Here, we use a simple standard optical setup using visible wavelength, a lithographic test object and a phase-shifting reference object to demonstrate the approach. Importantly, we show that a phase-shifting reference object, instead of the absorption mask proposed earlier, is sufficient for object reconstruction. This is relevant in view of the much easier implementation in future x-ray applications.

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