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Proceedings Article

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

[+] Author Affiliations
B. H. Park

Wellman Ctr. for Photomedicine, Harvard Medical School and Massachusetts General Hospital (USA) and Univ. of California/Irvine (USA)

Mark C. Pierce, Barry Cense, Johannes F. de Boer

Wellman Ctr. for Photomedicine, Harvard Medical School and Massachusetts General Hospital (USA)

Proc. SPIE 5316, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII, 391 (July 1, 2004); doi:10.1117/12.531400
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From Conference Volume 5316

  • Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII
  • Valery V. Tuchin; Joseph A. Izatt; James G. Fujimoto
  • San Jose, CA | January 24, 2004

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.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

B. H. Park ; Mark C. Pierce ; Barry Cense and Johannes F. de Boer
"Speckle averaging for optical coherence tomography by vibration of a thin water film", Proc. SPIE 5316, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII, 391 (July 1, 2004); doi:10.1117/12.531400; http://dx.doi.org/10.1117/12.531400


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