Hyperbolic damped-wave models for transient light-pulse propagation in scattering media

Sunil Kumar, Kunal Mitra, Yukio Yamada

Research output: Contribution to journalArticle

Abstract

Transient optical transport in highly scattering media such as tissues is usually modeled as a diffusion process in which the energy flux is assumed proportional to the fluence (intensity averaged over all solid angles) gradients. Such models exhibit an infinite speed of propagation of the optical signal, and finite transmission values are predicted even at times smaller than those associated with the propagation of light. If the hyperbolic, or wave, nature of the complete transient radiative transfer equation is retained, the resulting models do not exhibit such drawbacks. Additionally, the hyperbolic equations converge to the solution at a faster rate, which makes them very attractive for numerical applications in time-resolved optical tomography.

Original languageEnglish (US)
Pages (from-to)3372-3378
Number of pages7
JournalApplied Optics
Volume35
Issue number19
DOIs
StatePublished - Jul 1 1996

Keywords

  • Optical tomography
  • Pulsed lasers
  • Scattering media

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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