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Applied Optics

Applied Optics


  • Vol. 37, Iss. 10 — Apr. 1, 1998
  • pp: 1913–1916

Low-coherence heterodyne photon correlation spectroscopy

Joshua H. Johnson, Shannon L. Siefken, Aaron Schmidt, Robert Corey, and Paul Saulnier  »View Author Affiliations

Applied Optics, Vol. 37, Issue 10, pp. 1913-1916 (1998)

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Photon correlation spectroscopy (PCS) is routinely used to investigate the dynamics of colloidal particles undergoing Brownian motion. This technique is applicable to low-density colloidal suspensions in which the effects of multiple light scattering are minimal. We introduce a new low-coherence heterodyne PCS technique that allows direct investigation of colloidal suspensions of higher concentration than previously accessible with standard PCS. In this technique, low-coherence optical heterodyne interferometry is used to suppress multiple light scattering, allowing preferential detection of single-scattering events.

© 1998 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(040.2840) Detectors : Heterodyne
(300.6240) Spectroscopy : Spectroscopy, coherent transient

Original Manuscript: September 17, 1997
Revised Manuscript: November 24, 1997
Published: April 1, 1998

Joshua H. Johnson, Shannon L. Siefken, Aaron Schmidt, Robert Corey, and Paul Saulnier, "Low-coherence heterodyne photon correlation spectroscopy," Appl. Opt. 37, 1913-1916 (1998)

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