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Journal of Biomedical Optics

Chirp optical coherence tomography of layered scattering media
Author(s): Udo Haberland; Vladimir Blazek; Hans Juergen Schmitt
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Paper Abstract

A new noninvasive technique that reveals cross sectional images of scattering media is presented. It is based on a continuous wave frequency modulated radar, but uses a tunable laser in the near infrared. As the full width at half maximum resolution of 16 µm is demonstrated with an external cavity laser, the chirp optical coherence tomography becomes an alternative to conventional short coherence tomography with the advantage of a simplified optical setup. The analysis of two-layer solid phantoms shows that the backscattered light gets stronger with decreasing anisotropic factor and increasing scattering coefficient, as predicted by Monte Carlo simulations. By introducing a two-phase chirp sequence, the combination of lateral resolved perfusion and depth resolved structure is shown.

Paper Details

Date Published: 1 July 1998
PDF: 8 pages
J. Biomed. Opt. 3(3) doi: 10.1117/1.429889
Published in: Journal of Biomedical Optics Volume 3, Issue 3
Show Author Affiliations
Udo Haberland, Technische Univ. Aachen (Germany)
Vladimir Blazek, Technische Univ. Aachen (Germany)
Hans Juergen Schmitt, Technische Univ. Aachen (Germany)

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