Calibration-free B-scan images produced by master/slave optical coherence tomography

Bradu, Adrian and Podoleanu, Adrian G.H. (2014) Calibration-free B-scan images produced by master/slave optical coherence tomography. Optics Letters, 39 (3). pp. 450-453. ISSN 0146-9592. (doi:https://doi.org/10.1364/OL.39.000450) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided)

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Abstract

We report on a novel method to produce B-scan images in spectral domain optical coherence tomography (SD-OCT). The method proceeds in two steps. In the first step, using a mirror in the sample arm of the interferometer, channeled spectra are acquired for different values of the optical path difference (OPD) and stored as masks. In the second step, the mirror is replaced with an object and the captured channelled spectrum is correlated with each mask, providing the interference strength from the OPD value used to collect the respective mask. Such a procedure does not require data organized in equal frequency slots, and therefore there is no need for resampling as practiced in the conventional fast Fourier transform (FFT)-based SD-OCT technology. We show that the sensitivity drop-off versus OPD and the quality of B-scan images of the novel method are similar to those obtained in the conventional FFT-based SD-OCT, using spectral data linearly organized in frequency. © 2014 Optical Society of America.

Item Type: Article
Additional information: This is available as OPEN ACCESS by clicking on the URL.
Uncontrolled keywords: Fast Fourier transforms, Mirrors, B-scan images, Frequency slots, Interference strength, Optical path difference, Resampling, Spectral data, Spectral domain optical coherence tomographies, Optical tomography, article, calibration, Fourier analysis, methodology, optical coherence tomography, Calibration, Fourier Analysis, Tomography, Optical Coherence
Subjects: Q Science > QC Physics
Q Science > QC Physics > QC355 Optics
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Giles Tarver
Date Deposited: 10 Jul 2015 09:15 UTC
Last Modified: 08 May 2018 08:53 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49278 (The current URI for this page, for reference purposes)
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