30 May 1995 Absorption coefficient measurements of highly scattering media in slabs and cylindrical phantoms by means of time-resolved optical spectroscopy
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Abstract
Absorption coefficient measurements of strongly scattering homogeneous media have been performed using time-resolved transmittance of 100 fs pulse through a slab and cylindrical phantoms containing scattering particles suspended in weakly absorbing media. The scattering and absorption coefficients, (mu) s and (mu) a, were selected so that the optical properties of the media were similar to those of biological tissues in the near-infrared wavelength range. Measured curves of time-resolved transmittance of the pulse through the media were used to estimate the (mu) a and reduced scattering coefficient, (mu) 's, of the media. The experiments were made at two different wavelengths, 784 nm and 810 nm. Estimated (mu) a and (mu) 's were in good agreement with those measured in a nonscattering case by means of spectrophotometer and calculated by using the Mie theory.
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Sergei G. Proskurin, Sergei G. Proskurin, Yukio Yamada, Yukio Yamada, Yukari Tanikawa-Takahashi, Yukari Tanikawa-Takahashi, } "Absorption coefficient measurements of highly scattering media in slabs and cylindrical phantoms by means of time-resolved optical spectroscopy", Proc. SPIE 2389, Optical Tomography, Photon Migration, and Spectroscopy of Tissue and Model Media: Theory, Human Studies, and Instrumentation, (30 May 1995); doi: 10.1117/12.209963; https://doi.org/10.1117/12.209963
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