Optical characterization of melanin

Dhiraj K. Sardar, Michael L. Mayo, Randolph D. Glickman

Research output: Contribution to journalArticlepeer-review

84 Scopus citations


The optical properties of melanin have been characterized for a number of laser wavelengths in the visible region. The index of refraction of melanin is measured by the conventional method of minimum deviation using a hollow quartz prism at these wavelengths. The inverse adding doubling method based on the diffusion approximation and radiative transport theory have been employed to determine the absorption, scattering, and scattering anisotropy coefficients of melanin from the measurements of diffuse transmission, diffuse reflection and collimated transmission using double integrating spheres. The results obtained by the use of inverse adding doubling method have been compared to the Monte Carlo simulation technique.

Original languageEnglish (US)
Pages (from-to)404-411
Number of pages8
JournalJournal of biomedical optics
Issue number4
StatePublished - Oct 2001


  • Lasers
  • Melanin
  • Optical properties
  • Radiative transport

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering


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