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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 2 — Mar. 4, 2013

Numerical evaluation of the limit of concentration of colloidal samples for their study with digital lensless holographic microscopy

John F. Restrepo and Jorge Garcia-Sucerquia  »View Author Affiliations


Applied Optics, Vol. 52, Issue 1, pp. A310-A318 (2013)
http://dx.doi.org/10.1364/AO.52.00A310


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Abstract

The number of colloidal particles per unit of volume that can be imaged correctly with digital lensless holographic microscopy (DLHM) is determined numerically. Typical in-line DLHM holograms with controlled concentration are modeled and reconstructed numerically. By quantifying the ratio of the retrieved particles from the reconstructed hologram to the number of the seeding particles in the modeled intensity, the limit of concentration of the colloidal suspensions up to which DLHM can operate successfully is found numerically. A new shadow density parameter for spherical illumination is defined. The limit of performance of DLHM is determined from a graph of the shadow density versus the efficiency of the microscope.

© 2012 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(100.2980) Image processing : Image enhancement
(110.0180) Imaging systems : Microscopy
(090.1995) Holography : Digital holography
(100.4999) Image processing : Pattern recognition, target tracking

History
Original Manuscript: August 16, 2012
Revised Manuscript: October 31, 2012
Manuscript Accepted: November 1, 2012
Published: November 28, 2012

Virtual Issues
Vol. 8, Iss. 2 Virtual Journal for Biomedical Optics

Citation
John F. Restrepo and Jorge Garcia-Sucerquia, "Numerical evaluation of the limit of concentration of colloidal samples for their study with digital lensless holographic microscopy," Appl. Opt. 52, A310-A318 (2013)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-52-1-A310

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