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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 29, Iss. 7 — Jul. 1, 2012
  • pp: 1445–1458

Photon diffusion in a homogeneous medium bounded externally or internally by an infinitely long circular cylindrical applicator. IV. Frequency-domain analysis

Anqi Zhang and Daqing Piao  »View Author Affiliations


JOSA A, Vol. 29, Issue 7, pp. 1445-1458 (2012)
http://dx.doi.org/10.1364/JOSAA.29.001445


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Abstract

Part IV examines frequency-domain photon diffusion in a homogeneous medium enclosed by a “concave” circular cylindrical applicator or enclosing a “convex” circular cylindrical applicator, both geometries being infinite in the longitudinal dimension. The aim is to assess by analogical and finite-element methods the changes of AC amplitude, modulation depth, and phase with respect to the line-of-sight source–detector distance for a source and a detector located along the azimuthal or longitudinal direction on the concave or convex medium–applicator interface. By comparing to their counterparts along a straight line on a semi-infinite medium–applicator interface, for the same line-of-sight source–detector distance, it is found that: (1) the decay-rate of AC photon fluence is smaller along the azimuthal direction and greater along the longitudinal direction on the concave interface, (2) the decay-rate of AC photon fluence is greater along the azimuthal direction and smaller along the longitudinal direction on the convex interface, (3) the modulation depth along both azimuthal and longitudinal directions decays more slowly on the concave interface and faster on the convex interface, and (4) the phase along both azimuthal and longitudinal directions increases more slowly on the concave interface and faster on the convex interface.

© 2012 Optical Society of America

OCIS Codes
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.5280) Medical optics and biotechnology : Photon migration
(170.6960) Medical optics and biotechnology : Tomography

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: March 6, 2012
Revised Manuscript: May 11, 2012
Manuscript Accepted: May 14, 2012
Published: June 29, 2012

Virtual Issues
Vol. 7, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Anqi Zhang and Daqing Piao, "Photon diffusion in a homogeneous medium bounded externally or internally by an infinitely long circular cylindrical applicator. IV. Frequency-domain analysis," J. Opt. Soc. Am. A 29, 1445-1458 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-7-1445


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