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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 5 — Feb. 28, 2011
  • pp: 4393–4398

Holographic particle-streak velocimetry

Lisa Dixon, Fook Chiong Cheong, and David G. Grier  »View Author Affiliations


Optics Express, Vol. 19, Issue 5, pp. 4393-4398 (2011)
http://dx.doi.org/10.1364/OE.19.004393


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Abstract

We present a way to measure the positions and instantaneous velocities of micrometer-scale colloidal spheres using a single holographic snapshot obtained through in-line holographic video microscopy. This method builds on previous quantitative analyses of colloidal holograms by accounting for blurring that occurs as a sphere moves during the camera’s exposure time. The angular variance of a blurred hologram’s radial intensity profile yields both the magnitude and direction of a sphere’s in-plane velocity. At sufficiently low speeds, the same hologram also can be used to characterize other properties, such as the sphere’s radius and refractive index.

© 2011 Optical Society of America

OCIS Codes
(090.1760) Holography : Computer holography
(180.6900) Microscopy : Three-dimensional microscopy

ToC Category:
Holography

History
Original Manuscript: January 12, 2011
Revised Manuscript: February 13, 2011
Manuscript Accepted: February 13, 2011
Published: February 22, 2011

Virtual Issues
Vol. 6, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Lisa Dixon, Fook C. Cheong, and David G. Grier, "Holographic particle-streak velocimetry," Opt. Express 19, 4393-4398 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-5-4393


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References

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