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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 7 — Mar. 1, 2013
  • pp: C1–C10

Coherent diffractive imaging beyond the Fresnel approximation using a deterministic phase-retrieval method with an aperture-array filter

Nobuharu Nakajima  »View Author Affiliations


Applied Optics, Vol. 52, Issue 7, pp. C1-C10 (2013)
http://dx.doi.org/10.1364/AO.52.0000C1


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Abstract

Previously, we have proposed a lensless coherent imaging using a nonholographic and noniterative phase-retrieval method that allows the reconstruction of a complex-valued object from a single diffraction intensity measured with an aperture-array filter. The proof-of-concept experiment of this method has been demonstrated under the Fresnel diffraction approximation. In applications to microscopy, however, the measurement of the diffraction intensity with high numerical aperture beyond the Fresnel approximation is required to obtain the object information at high spatial resolution. Thus we have also presented an extension procedure to apply the method to the cases beyond the Fresnel approximation by means of computer simulations. Here the effectiveness of the procedure is demonstrated by the experiments, in which the reconstruction with about 10 times the resolution of our previous experiment has been achieved and the object information in depth direction has been retrieved.

© 2013 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(100.5070) Image processing : Phase retrieval

History
Original Manuscript: August 21, 2012
Revised Manuscript: December 2, 2012
Manuscript Accepted: December 3, 2012
Published: January 4, 2013

Citation
Nobuharu Nakajima, "Coherent diffractive imaging beyond the Fresnel approximation using a deterministic phase-retrieval method with an aperture-array filter," Appl. Opt. 52, C1-C10 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-7-C1

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