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Attenuation of mirror image and enhancement of the signal-to-noise ratio in a Talbot bands optical coherence tomography system

Bradu, Adrian, Podoleanu, Adrian G.H. (2011) Attenuation of mirror image and enhancement of the signal-to-noise ratio in a Talbot bands optical coherence tomography system. Journal of Biomedical Optics, 16 (7). 0-0. ISSN 1083-3668. (doi:10.1117/1.3598446) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1117/1.3598446

Abstract

A Fourier domain optical coherence tomography setup is presented built around an optical configuration that exhibits Talbot bands. A low astigmatism spectrometer is used, employing a spherical mirror and a cylindrical lens between a diffraction grating and a linear CCD camera. To produce Talbot bands, the two interferometer beams-object and reference-are laterally shifted in respect to each other in their way toward the diffraction grating. This allows attenuation of mirror terms and optimization of the sensitivity profile. We evaluate the optimization of the sensitivity profile with depth, in respect to its overall strength and its position peak, which can be shifted toward a larger optical path difference in the interferometer. We demonstrate the efficiency of such a configuration at large depths by imaging a thick phantom and human skin in vivo for different values of the lateral distance between the two beams. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

Item Type: Article
DOI/Identification number: 10.1117/1.3598446
Uncontrolled keywords: mirror terms, optical coherence tomography, Talbot bands, Cylindrical lens, Fourier domain Optical coherence tomography, Human skin in vivo, Linear CCD, Mirror images, Optical configurations, Optical path difference, Sensitivity profiles, Signal to noise, Spherical mirror, Talbot bands, Two beams, CCD cameras, Diffraction, Diffraction gratings, Interferometers, Optimization, Signal to noise ratio, Tomography, Mirrors, article, evaluation, Fourier analysis, histology, human, image enhancement, image quality, instrumentation, interferometry, light related phenomena, optical coherence tomography, sensitivity and specificity, signal noise ratio, skin, statistics, theoretical model, Fourier Analysis, Humans, Image Enhancement, Interferometry, Models, Theoretical, Optical Phenomena, Phantoms, Imaging, Sensitivity and Specificity, Signal-To-Noise Ratio, Skin, Tomography, Optical Coherence
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: Giles Tarver
Date Deposited: 16 Jul 2015 13:41 UTC
Last Modified: 29 May 2019 14:49 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49409 (The current URI for this page, for reference purposes)
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