Long axial range swept-source OCT instrument enhanced by Complex Master-Slave processing

Marques, M.J. and Bradu, Adrian and Rivet, Sylvain and Podoleanu, Adrian G.H. (2019) Long axial range swept-source OCT instrument enhanced by Complex Master-Slave processing. In: Progress in Biomedical Optics and Imaging. Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXIII. Proceedings of SPIE, 20 (17). SPIE ISBN 978-1-5106-2376-7. (doi:https://doi.org/10.1117/12.2508638) (Full text available)

Abstract

We report on the use of the Complex Master-Slave (CMS) method to obtain a long axial range in a swept-source OCT system, well above the axial range limit imposed by the k-clock of the optical source. This is achieved without the need for software-based k-domain re-sampling or employing an additional Mach-Zehnder interferometer providing a stable k-clock signal to the digitizer board. An imaging range of over 17 mm is reported in each case using a commercially available swept source from either Axsun and Santec operating in the 1 µm region, with a 100 kHz repetition rate, which is about three times the range achievable using either source's built-in k-clock. We have also analyzed the impact the digitization has on the axial range and resolution of the system.

Item Type:	Conference or workshop item (Proceeding)
Subjects:	Q Science > QC Physics > QC355 Optics
Divisions:	Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User:	Manuel Jorge Marques
Date Deposited:	25 Mar 2019 09:27 UTC
Last Modified:	17 May 2019 12:47 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/73189 (The current URI for this page, for reference purposes)
Marques, M.J.:	https://orcid.org/0000-0002-7509-0704
Bradu, Adrian:	https://orcid.org/0000-0002-6890-1599
Podoleanu, Adrian G.H.:	https://orcid.org/0000-0002-4899-9656