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Optical coherence microscopy in gastrointestinal tissues

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5 Author(s)
Izatt, J.A. ; Dept. of Med., Case Western Reserve Univ., Cleveland, OH, USA ; Hsing-Wen Wang ; Kulkarni, M. ; Canto, M.I.
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Summary form only given. Optical coherence microscopy (OCM) is a novel technique complementary to optical coherence tomography (OCT), which combines low-coherence interferometry with confocal microscopy to achieve micron-resolution optical imaging deep in highly scattering media. OCM can be implemented using a single mode fiber optic low-coherence interferometer. We have implemented an OCM system specifically designed for high-resolution imaging deep in highly scattering tissues by utilizing low-coherence illumination from a superluminescent diode (SLD) source at 1.3-/spl mu/m center wavelength. High-sensitivity detection of backscattered light (>95 dB dynamic range) is accomplished using heterodyne detection at 1.6-kHz modulation frequency, provided by small-amplitude PZT modulation of the reference arm length. OCM examination of microscopic morphology in bulk gastrointestinal tissues in situ is illustrated.

Published in:

Lasers and Electro-Optics, 1996. CLEO '96., Summaries of papers presented at the Conference on

Date of Conference:

2-7 June 1996