publications by Joseph A. Izatt.

Papers Published

  1. Kulkarni, M.D. and Izatt, J.A., Spectroscopic optical coherence tomography, CLEO '96. Summaries of Papers Presented at the Conference on Lasers and Electro-Optics. Vol.9. 1996 Technical Digest Series. Conference Edition (IEEE Cat. No.96CH35899) (1996), pp. 59 - 60 .
    (last updated on 2007/04/13)

    Summary form only given. Implementations of OCT, which take advantage of the spectral bandwidth of low coherence sources for tissue spectroscopy, have not yet been reported. We describe a novel technique for depth-resolved coherent backscatter spectroscopy, which is an extension of OCT technology. Our system incorporates an OCT scanner illuminated by a superluminescent diode (SLD) at 1.3-μm center wavelength. In the low-coherence interferometer, a scanning reference mirror generates the temporal cross-correlation function of light reflected from the reference mirror, and that backscattered from the sample arm target. A separate helium-neon interferometer is utilized for digital correction of artifacts in the low-coherence interferometer output due to nonlinearities in the reference arm retroreflector stage velocity. The low-coherence interferometric signal is digitally demodulated and filtered to obtain the complete complex envelope of the interferometric signal, which is required for the spectroscopic technique. Using this system, low-coherence interferograms with accurate sampling intervals and high dynamic range (>98 dB) are acquired

    biological techniques;biomedical imaging;image resolution;infrared imaging;infrared spectroscopy;light interferometers;optical tomography;