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Proceedings Paper

Speckle averaging for optical coherence tomography by vibration of a thin water film
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Paper Abstract

A novel method for reducing the appearance of speckle within a single image acquisition in optical coherence tomography is presented. Local variations in the optical path length of beamlets within the beam diameter are introduced by vibrating a thin water film placed in a collimated section of the sample arm beam path. Consequent averaging of small numbers of adjacent depth scans results in a reduced appearance of speckle with no change in the axial point spread function. Reduced speckle images of a layered agar sample and thin reflective surfaces are shown.

Paper Details

Date Published: 1 July 2004
PDF: 6 pages
Proc. SPIE 5316, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII, (1 July 2004); doi: 10.1117/12.531400
Show Author Affiliations
B. Hyle Park, Wellman Ctr. for Photomedicine, Harvard Medical School and Massachusetts General Hospital (United States)
Univ. of California/Irvine (United States)
Mark C. Pierce, Wellman Ctr. for Photomedicine, Harvard Medical School and Massachusetts General Hospital (United States)
Barry Cense, Wellman Ctr. for Photomedicine, Harvard Medical School and Massachusetts General Hospital (United States)
Johannes F. de Boer, Wellman Ctr. for Photomedicine, Harvard Medical School and Massachusetts General Hospital (United States)


Published in SPIE Proceedings Vol. 5316:
Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII
Valery V. Tuchin; Joseph A. Izatt; James G. Fujimoto, Editor(s)

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