Femtosecond transillumination optical coherence tomography.


Journal Article

We describe a new technique, femtosecond transillumination optical coherence tomography, for time-gated imaging of objects embedded in scattering media. Time gating is performed with a fiber-optic interferometer with femtosecond pulses and coherent heterodyne detection to achieve a 130-dB dynamic range. A confocal imaging arrangement provides additional spatial discrimination against multiply scattered light. By time gating ballistic photons, we achieve 125-microm-resolution images of absorbing objects in media 27 scattering mean free paths thick. We derive a fundamental limit on ballistic imaging thickness based on quantum noise considerations.

Full Text

Duke Authors

Cited Authors

  • Hee, MR; Izatt, JA; Jacobson, JM; Fujimoto, JG; Swanson, EA

Published Date

  • June 1, 1993

Published In

Volume / Issue

  • 18 / 12

Start / End Page

  • 950 - 952

PubMed ID

  • 19823255

Pubmed Central ID

  • 19823255

Electronic International Standard Serial Number (EISSN)

  • 1539-4794

International Standard Serial Number (ISSN)

  • 0146-9592

Digital Object Identifier (DOI)

  • 10.1364/ol.18.000950


  • eng