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Expression of optical diffusion coefficient in high-absorption turbid media.
- Source :
-
Electronics & Communications in Japan, Part 2: Electronics . Nov98, Vol. 81 Issue 11, p34-41. 8p. - Publication Year :
- 1998
-
Abstract
- The format of the diffusion coefficient in the optical diffusion equation is determined experimentally. For the diffusion coefficient D in the optical diffusion equation used for description of optical propagation in a turbid medium, two representations have been proposed, one containing the absorption coefficient μa and another without it. In the present research the scattered light is measured with steady light in a medium with large absorption in order to determine which of the diffusion coefficient expressions describes optical propagation in a turbid medium more accurately. The diffusion coefficient is found not to be affected by absorption even if the absorption varies from almost 0 to a value close to the reduced scattering coefficient μ′s, and its value agrees well with (3μ′s)-1. Hence, it is confirmed that the absorption coefficient used is not included in the diffusion coefficient used in the optical diffusion equation, and that the coefficient is given by <UEQN>D = (3μ′s)-1</UEQN> © 1998 Scripta Technica, Electron Comm Jpn Pt 2, 81(11): 34–41, 1998 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 8756663X
- Volume :
- 81
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Electronics & Communications in Japan, Part 2: Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 13539719
- Full Text :
- https://doi.org/10.1002/(SICI)1520-6432(199811)81:11<34::AID-ECJB5>3.0.CO;2-E