Papers Published

1. Hee, M.R. and Izatt, J.A. and Jacobson, J.M. and Fujimoto, J.G. and Swanson, E.A., Femtosecond transillumination optical coherence tomography, Opt. Lett. (USA), vol. 18 no. 12 (1993), pp. 950 - 2 .
   (last updated on 2007/04/13)

   Abstract:
   The authors 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, they achieve 125-μm-resolution images of absorbing objects in media 27 scattering mean free paths thick. They derive a fundamental limit on ballistic imaging thickness based on quantum noise considerations

   Keywords:
   biological techniques and instruments;computerised tomography;fibre optic sensors;high-speed optical techniques;light interferometers;light scattering;