Pramana

, Volume 54, Issue 2, pp 255–267

Estimation of light transport parameters in biological media using coherent backscattering

  • S Anantha Ramakrishna
  • K Divakara Rao
Research Articles

Abstract

The suitability of using the angular peak shape of the coherent backscattered light for estimating the light transport parameters of biological media has been investigated. Milk and methylene blue doped milk were used as tissue phantoms for the measurements carried out with a He-Ne laser (632.8 nm). Results indicate that while the technique accurately estimates the transport length, it can determine the absorption coefficient only when the absorption is moderately high (α>1 cm−1) for the long transport lengths typical of tissues. Further, the possibility of determining the anisotropy factor by estimating the single scattering contribution to the diffuse background is examined.

Keywords

Coherent back scattering light transport tissue optics 

PACS Nos

42.25.Bs 42.62.Be 87.63.Lk 

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Copyright information

© Indian Academy of Sciences 2000

Authors and Affiliations

  • S Anantha Ramakrishna
    • 1
  • K Divakara Rao
    • 1
  1. 1.Laser ProgrammeCentre for Advanced TechnologyIndoreIndia
  2. 2.Theoretical Physics and Optics GroupRaman Research InstituteBangaloreIndia

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