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Proceedings Paper

Contrast and resolution in optical coherence tomography
Author(s): Thomas Hellmuth
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Paper Abstract

Optical coherence tomography (OCT) is an interferometric scanning technique. The instrument core is a Michelson interferometer comprising a moving reference mirror and a backscattering object representing the second mirror. The light source coherence length determines the depth resolution of this imaging method. OCT provides images with improved contrast and depth resolution compared to confocal microscopy in the case of turbid objects. Here, the imaging performance and contrast mechanisms of OCT are analyzed in terms of linear system theory. It is shown that OCT has a band pass filter behavior. The system transfer function is compared to the transfer function of a coherent confocal microscope.

Paper Details

Date Published: 6 December 1996
PDF: 10 pages
Proc. SPIE 2926, Optical Biopsies and Microscopic Techniques, (6 December 1996); doi: 10.1117/12.260800
Show Author Affiliations
Thomas Hellmuth, Fachhochschule Aalen (United States)

Published in SPIE Proceedings Vol. 2926:
Optical Biopsies and Microscopic Techniques
Irving J. Bigio; Warren S. Grundfest M.D.; Herbert Schneckenburger; Katarina Svanberg M.D.; Pierre M. Viallet, Editor(s)

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