Martínez Jiménez, Alejandro, Cernat, Ramona, Bradu, Adrian, Riha, Rene, Proano Grijalva, Esteban Andres, Meyer, Bjorn, Ansbaek, Thor, Yvind, Kresten, Podoleanu, Adrian G.H. (2025) Towards high-speed optical coherence tomography through downconversion master slave and bidirectional sweeping. In: High-Throughput Biophotonics: Imaging, Spectroscopy, and Beyond X (C13330). . Society of Photo-Optical Instrumentation Engineers (SPIE) (doi:10.1117/12.3043871) (KAR id:109793)
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| Official URL: https://doi.org/10.1117/12.3043871 |
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Abstract
This paper presents the challenges of signal processing in optical coherence tomography (OCT) imaging systems using asymmetric MHz bidirectional sweeping lasers. It proposes a downconversion master-slave method as an alternative to traditional OCT protocols. This method uses analogue electronics to produce a downconverted radio frequency signal from the product between a master and a slave interferometer. The product compensates for sweep-to-sweep variations in laser emissions in real-time, eliminating the need for calibration. En-face images are demonstrated using a bidirectional laser sweeping at a rate of 1.6 MHz and a slow acquisition card with a sampling rate of only 2.5 MS/s.
| Item Type: | Conference or workshop item (Proceeding) |
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| DOI/Identification number: | 10.1117/12.3043871 |
| Uncontrolled keywords: | optical coherence tomography; calibration; analog electronics; equipment; imaging systems; interferometers; laser processing |
| Subjects: | Q Science > QC Physics > QC355 Optics |
| Institutional Unit: | Schools > School of Engineering, Mathematics and Physics > Physics and Astronomy |
| Former Institutional Unit: |
Divisions > Division of Natural Sciences > Physics and Astronomy
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| Depositing User: | Alejandro Martinez Jimenez |
| Date Deposited: | 28 Apr 2025 16:50 UTC |
| Last Modified: | 22 Jul 2025 09:23 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/109793 (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
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| CReDIT Contributor Roles: |
Cernat, Ramona.
| Creator's ORCID: |
https://orcid.org/0000-0001-5243-7480
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| CReDIT Contributor Roles: |
Bradu, Adrian.
| Creator's ORCID: |
https://orcid.org/0000-0002-6890-1599
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| CReDIT Contributor Roles: |
Riha, Rene.
| Creator's ORCID: |
https://orcid.org/0000-0003-1327-1072
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| CReDIT Contributor Roles: |
Podoleanu, Adrian G.H..
| Creator's ORCID: |
https://orcid.org/0000-0002-4899-9656
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| CReDIT Contributor Roles: |
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