Downconversion Master Slave OCT With a Bidirectional Sweeping Laser

Martínez Jiménez, Alejandro, Cernat, Ramona, Bradu, Adrian, Riha, Rene, Proano Grijalva, Esteban Andres, Ole Meyer, Bjorn, Ansbaek, Thor, Yvind, Kresten, Podoleanu, Adrian G.H. (2024) Downconversion Master Slave OCT With a Bidirectional Sweeping Laser. Journal of Biophotonics, . Article Number e202400201. ISSN 1864-063X. E-ISSN 1864-0648. (doi:10.1002/jbio.202400201) (KAR id:107029)

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Official URL: https://doi.org/10.1002/jbio.202400201

Abstract

This paper explores the challenges of signal processing when using optical coherence tomography (OCT) imaging instruments driven by asymmetric MHz bidirectional sweeping lasers. A downconversion master–slave (DMS) method is proposed as a viable alternative to the traditional OCT protocol. Unlike conventional swept source OCT, which requires a separate calibration for each sweep, the DMS approach does not require calibration of the acquired channeled spectra; its operation is independent of the tuning direction. We demonstrate the practicality of the DMS method with en-face OCT images obtained with an OCT instrument equipped with a fast bidirectional swept laser (tuning speed 1.6MHz) and a slow acquisition card of only 2.5 MS/s sampling rate

Item Type:	Article
DOI/Identification number:	10.1002/jbio.202400201
Additional information:	For the purpose of open access, the author has applied a CC BY public copyright licence to any Author Accepted Manuscript version arising from this submission.
Subjects:	Q Science > QC Physics > QC355 Optics Q Science > QC Physics > QC411 Interference
Divisions:	Divisions > Division of Natural Sciences > Physics and Astronomy
Funders:	European Commission (https://ror.org/00k4n6c32) Engineering and Physical Sciences Research Council (https://ror.org/0439y7842) Biotechnology and Biological Sciences Research Council (https://ror.org/00cwqg982) NIHR Moorfields Biomedical Research Centre (https://ror.org/004hydx84) Wellcome Trust (https://ror.org/029chgv08) National Institute for Health Research (https://ror.org/0187kwz08)
Depositing User:	Alejandro Martinez Jimenez
Date Deposited:	28 Aug 2024 08:49 UTC
Last Modified:	28 Aug 2024 15:29 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/107029 (The current URI for this page, for reference purposes)

University of Kent Author Information

Martínez Jiménez, Alejandro.

Creator's ORCID:	https://orcid.org/0000-0001-5370-7817
CReDIT Contributor Roles:

Cernat, Ramona.

Creator's ORCID:	https://orcid.org/0000-0001-5243-7480
CReDIT Contributor Roles:

Bradu, Adrian.

Creator's ORCID:	https://orcid.org/0000-0002-6890-1599
CReDIT Contributor Roles:

Riha, Rene.

Creator's ORCID:	https://orcid.org/0000-0003-1327-1072
CReDIT Contributor Roles:

Podoleanu, Adrian G.H..

Creator's ORCID:	https://orcid.org/0000-0002-4899-9656
CReDIT Contributor Roles:

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