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Enhancing depth of focus in tilted microfluidics channels by digital holography |
Optics Letters, Vol. 38, Issue 6, pp. 896-898 (2013)
http://dx.doi.org/10.1364/OL.38.000896
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Abstract
In this Letter we propose a method to enhance the limited depth of field (DOF) in optical imaging systems, through digital holography. The proposed approach is based on the introduction of a cubic phase plate into the diffraction integral, analogous to what occurs in white-light imaging systems. By this approach we show that it is possible to improve the DOF and to recover the extended focus image of a tilted object in a single reconstruction step. Moreover, we demonstrate the possibility of obtaining well-focused biological cells flowing into a tilted microfluidic channel.
© 2013 Optical Society of America
OCIS Codes
(100.0100) Image processing : Image processing
(090.1995) Holography : Digital holography
(110.3175) Imaging systems : Interferometric imaging
ToC Category:
Holography
History
Original Manuscript: December 13, 2012
Revised Manuscript: February 5, 2013
Manuscript Accepted: February 11, 2013
Published: March 12, 2013
Citation
Marcella Matrecano, Melania Paturzo, Andrea Finizio, and Pietro Ferraro, "Enhancing depth of focus in tilted microfluidics channels by digital holography," Opt. Lett. 38, 896-898 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-6-896
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