| Popis: |
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.© (1995) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
