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Proceedings Paper

Modeling the optical coherence tomography geometry using the extended Huygens-Fresnel principle and Monte Carlo simulations
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Paper Abstract

We have developed a new theoretical description of the optical coherence tomography (OCT) geometry for imaging in highly scattering tissue. The new model is based on the extended Huygens-Fresnel principle, and it is valid in the single and multiple scattering regimes. The so-called shower curtain effect, which manifests itself in standard OCT systems, is an inherent property of the extended Huygens- Fresnel model. We compare the theoretical analysis with experiments carried out on samples consisting of aqueous suspensions of microspheres and solid phantoms. We calculate the signal-to-noise ratio, and provide an estimation of the maximum attainable probing depth for shot-noise limited detection. Furthermore, we investigate the focusing of the Gaussian probe beam in the tissue using Monte Carlo simulations, and compare it to the extended Huygens-Fresnel model. Finally, we simulate the operation of the OCT system using a specially adapted Monte Carlo simulation code.

Paper Details

Date Published: 14 April 2000
PDF: 13 pages
Proc. SPIE 3927, Optical Pulse and Beam Propagation II, (14 April 2000); doi: 10.1117/12.382049
Show Author Affiliations
Peter E. Andersen, Risoe National Lab. (Denmark)
Lars Thrane, Risoe National Lab. (Denmark)
Harold T. Yura, The Aerospace Corp. (United States)
Andreas Tycho, Technical Univ. of Denmark (Denmark)
Thomas Martini Joergensen, Risoe National Lab. (Denmark)


Published in SPIE Proceedings Vol. 3927:
Optical Pulse and Beam Propagation II
Yehuda B. Band, Editor(s)

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