Abstract
A simple and quick approach is used to measure the reduced scattering coefficient (µs') of a semi-infinite turbid medium having a much smaller absorption coefficient than µs'. A laser beam with an oblique angle of incidence to the medium causes the center of the diffuse reflectance that is several transport mean-free paths away from the incident point to shift away from the point of incidence by an amount ?x. This amount is used to compute µs' by µs' = sin(ai)/(n?x), where n is the refractive index of the turbid medium divided by that of the incident medium and ai is the angle of incidence measured from the surface normal. For a turbid medium having an absorption coefficient comparable with µs', a revision to the above formula is made. This method is tested theoretically by Monte Carlo simulations and experimentally by a video reflectometer.
Original language | English (US) |
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Pages (from-to) | 2362-2366 |
Number of pages | 5 |
Journal | Applied Optics |
Volume | 34 |
Issue number | 13 |
DOIs | |
State | Published - May 1 1995 |
Externally published | Yes |
Keywords
- Optical properties
- Scattering coefficient
- Scattering media
- Tissue optics
- Turbid media
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering