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High-speed, high-sensitivity, gated surface profiling with closed-loop optical coherence topography

Zvyagin, A.V., Eix, I. and Sampson, David (2002) High-speed, high-sensitivity, gated surface profiling with closed-loop optical coherence topography Applied Optics, 41 (11). pp. 2179-2184.

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We describe and experimentally demonstrate a novel (to our knowledge) surface profiling technique, for which we propose the term closed-loop optical coherence topography. This technique is a scanning beam, servo-locked variation of low-coherence interferometry. It allows for the sub-wavelengthresolution tracking of a weakly scattering macroscopic-scale surface, with the surface profile being directly output by the controlling electronics. The absence of significant real-time computational overhead makes the technique well suited to high-speed tracking. The use of a micrometer-scale coherence gate efficiently suppresses signals arising from structures not associated with the surface. These features make the technique particularly well suited to real-time surface profiling of in vivo, macroscopic biological surfaces.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences
Faculty of Health and Medical Sciences
Authors :
Zvyagin, A.V.
Eix, I.
Date : 2002
DOI : 10.1364/AO.41.002179
Uncontrolled Keywords : animal, article, human, interferometry, methodology, optics, sensitivity and specificity, surface property, time, Animals, Humans, Interferometry, Optics, Sensitivity and Specificity, Surface Properties, Time Factors, Computational methods, Interferometry, Phase shift, Surface phenomena, Optical coherence topography, Coherent light
Depositing User : Maria Rodriguez-Marquez
Date Deposited : 12 Jun 2018 10:14
Last Modified : 19 Sep 2018 11:32

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