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APS » Journals » Phys. Rev. E » Volume 47 » Issue 5
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Phys. Rev. E 47, R2999–R3002 (1993)

Scattering and wavelength transduction of diffuse photon density waves

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D. A. Boas and M. A. O’Leary
Department of Physics and Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396

B. Chance
Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396

A. G. Yodh
Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396

Received 22 December 1992; published in the issue dated May 1993

Experiments are performed that illustrate the scattering and reradiation of damped traveling waves of light energy density from objects within otherwise homogeneous turbid media. We demonstrate that simple diffractive and refractive models can be used to understand the scattering of these waves by absorptive and dispersive spheres. Furthermore, using a fluorescent dye we can reestablish the origin of the diffuse photon density waves, by converting from one optical and diffusive wavelength to another while maintaining phase coherence. The possibilities for precise medical imaging are presented.

© 1993 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.47.R2999
DOI:
10.1103/PhysRevE.47.R2999
PACS:
42.25.Gy, 42.62.Be, 41.20.Jb, 42.25.Md
 
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