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Proceedings Paper

Modular multiwavelength wideband intensity-modulated optical spectrometer for localized near-infrared spectroscopy
Author(s): Iain D. C. Tullis; Mark Cope; David T. Delpy
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Paper Abstract

We describe the development of a modular, multiwavelength, wideband intensity-modulated near infrared spectrometer (100MHz -1GHz) capable of simultaneous measurement of three parameters - the dc intensity, the ac intensity and the phase shift of light transmitted through tissue at a high sampling rate. The intended purpose of this instrument is the detection of fast dynamic changes in the reduced scattering coefficient of tissue due to cellular depolarization. The instrument requires sensitivity to small changes in optical pathlength and absorption in small volumes of tissue.

Paper Details

Date Published: 24 October 2001
PDF: 6 pages
Proc. SPIE 4434, Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications, (24 October 2001); doi: 10.1117/12.446664
Show Author Affiliations
Iain D. C. Tullis, Univ. College London (United Kingdom)
Mark Cope, Wireless Systems International (United Kingdom)
David T. Delpy, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 4434:
Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications
Albert-Claude Boccara; Alexander A. Oraevsky, Editor(s)

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