Cernat, Ramona, Martinez Jimenez, Alejandro, Podoleanu, Adrian G.H. (2024) Downconversion master slave optical coherence tomography for simultaneous en-face imaging at two depths. Optics Express, 32 (17). pp. 30756-30774. ISSN 1094-4087. (doi:10.1364/OE.530325) (KAR id:106851)
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Official URL: https://doi.org/10.1364/OE.530325 |
Abstract
We report the production of two en-face optical coherence tomography (OCT) images from two different depths in real time, using three interferometers in a configuration of double downconversion master slave OCT. Two active mixers are used to produce the analog product of two photodetection signals. A low-cost digitizer with a sampling rate just at the level of twice the inverse of the tuning interval is used, with a much lower sampling rate than that required by the conventional A-scan-based OCT imaging at the same tuning rate. Not employing a fast digitizer for the photodetected signal, as conventional OCT imaging does, the selection of temporal windows from the photodetected signals is achieved by low-cost RF switches. Optimum conditions for the active mixers and switches employed are evaluated to optimize the downconversion operation.
Item Type: | Article |
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DOI/Identification number: | 10.1364/OE.530325 |
Subjects: |
Q Science > QC Physics > QC355 Optics Q Science > QC Physics > QC411 Interference T Technology > TA Engineering (General). Civil engineering (General) > TA1520 Applied optics. Photonics |
Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
Funders: |
NIHR School for Public Health Research (https://ror.org/05c9p6d02)
Biotechnology and Biological Sciences Research Council (https://ror.org/00cwqg982) Engineering and Physical Sciences Research Council (https://ror.org/0439y7842) |
Depositing User: | Alejandro Martinez Jimenez |
Date Deposited: | 11 Aug 2024 17:19 UTC |
Last Modified: | 12 Aug 2024 09:09 UTC |
Resource URI: | https://kar.kent.ac.uk/id/eprint/106851 (The current URI for this page, for reference purposes) |
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