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Proceedings Paper

Application of near-field interference of phase-modulated spectroscopy for detection of absorbers: theoretical prediction of phase shift with respect to the location of the absorber
Author(s): Kyung A. Kang; Britton Chance; Duane F. Bruley; John Londono
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Paper Abstract

In this paper, basic principles of in- and anti-phased array in the localization of a heterogeneity in a scattering continuum are discussed. Various geometric configuration of multi-source placements, initial phase, and sinusoidal ac amplitude modulation are introduced. Phase and light intensity profiles in the plane of interest were computed analytically for a homogeneous scattering medium. Changes in the phase and the ac intensity with respect to the position of absorbers were also simulated by using a probabilistic numerical solution, the B-W-K technique.

Paper Details

Date Published: 14 September 1993
PDF: 14 pages
Proc. SPIE 1888, Photon Migration and Imaging in Random Media and Tissues, (14 September 1993); doi: 10.1117/12.154652
Show Author Affiliations
Kyung A. Kang, Univ. of Pennsylvania (United States)
Britton Chance, Univ. of Pennsylvania (United States)
Duane F. Bruley, Univ. of Maryland/Baltimore County (United States)
John Londono, Univ. of Pennsylvania (United States)

Published in SPIE Proceedings Vol. 1888:
Photon Migration and Imaging in Random Media and Tissues
Britton Chance; Robert R. Alfano, Editor(s)

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