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Combining Gabor and Talbot bands techniques to enhance the sensitivity with depth in Fourier domain optical coherence tomography

Bradu, Adrian and Marques, Manuel J. and Bouchal, Petr and Podoleanu, Adrian Gh. (2013) Combining Gabor and Talbot bands techniques to enhance the sensitivity with depth in Fourier domain optical coherence tomography. In: Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII. Proceedings of SPIE . SPIE. ISBN 978-0-8194-9340-8. (doi:10.1117/12.2003983) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided)

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Abstract

The purpose of this study was to show how to favorably mix two effects to improve the sensitivity with depth in Fourier domain optical coherence tomography (OCT): Talbot bands (TB) and Gabor-based fusion (GF) technique. TB operation is achieved by directing the two beams, from the object arm and from the reference arm in the OCT interferometer, along parallel separate paths towards the spectrometer. By changing the lateral gap between the two beams in their path towards the spectrometer, the position for the maximum sensitivity versus the optical path difference in the interferometer is adjusted. For five values of the focus position, the gap between the two beams is readjusted to reach maximum sensitivity. Then, similar to the procedure employed in the GF technique, a composite image is formed by edging together the parts of the five images that exhibited maximum brightness. The combined procedure, TB/GF is examined for four different values of the beam diameters of the two beams. Also we demonstrate volumetric FD-OCT images with mirror term attenuation and sensitivity profile shifted towards higher OPD values by applying a Talbot bands configuration.

Item Type: Book section
DOI/Identification number: 10.1117/12.2003983
Uncontrolled keywords: Gabor fusion technique, mirror terms, optical coherence tomography, Talbot bands, Combined procedures, Composite images, Fourier domain Optical coherence tomography, Fusion techniques, Maximum sensitivity, Optical path difference, Sensitivity profiles, Talbot bands, Interferometers, Luminance, Mirrors, Spectrometers, Optical tomography
Subjects: Q Science > QC Physics
R Medicine > R Medicine (General) > R857.O6 Optical coherence tomography
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: M.J.M. Marques
Date Deposited: 16 Jul 2015 09:27 UTC
Last Modified: 26 Jul 2019 10:22 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49340 (The current URI for this page, for reference purposes)
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