Reconstruction algorithms applied to in-line Gabor digital holographic microscopy

Molony, Karen M. and Hennelly, Bryan M. and Kelly, Damien P. and Naughton, Thomas J. (2010) Reconstruction algorithms applied to in-line Gabor digital holographic microscopy. Optics Communications, 283. pp. 903-909. ISSN 0030-4018

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This paper investigates the application of Fresnel based numerical algorithms for the reconstruction of Gabor in-line holograms. We focus on the two most widely used Fresnel approximation algorithms, the direct method and the angular spectrum method. Both algorithms involve calculating a Fresnel integral, but they accomplish it in fundamentally different ways. The algorithms perform differently for different physical parameters such as distance, CCD pixel size, and so on. We investigate the constraints for the algorithms when applied to in-line Gabor digital holographic microscopy. We show why the algorithms fail in some instances and how to alter them in order to obtain useful images of the microscopic specimen. We verify the altered algorithms using an optically captured digital hologram.

Item Type: Article
Additional Information: The definitive version of this article is available at Optics Communications (2010) Vol.283 pp.903-909. ©2009 Elsevier B.V. All rights reserved. DOI: 10.1016/j.optcom.2009.11.012
Keywords: Digital holography; Digital in-line holographic microscopy; Numerical reconstruction; Simulating light propagation; Fresnel transform; Free space diffraction;
Academic Unit: Faculty of Science and Engineering > Computer Science
Item ID: 3841
Depositing User: Thomas Naughton
Date Deposited: 04 Sep 2012 14:33
Journal or Publication Title: Optics Communications
Publisher: Elsevier
Refereed: Yes

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