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40 MHz Swept-Source Optical Coherence Tomography at 1060 nm Using a Time-Stretch and Supercontinuum Spectral Broadening Dynamics

Grelet, Sacha, Martínez Jiménez, Alejandro, Dybbro Engelsholm, Rasmus, Bowen Montague, Patrick, Podoleanu, Adrian (2022) 40 MHz Swept-Source Optical Coherence Tomography at 1060 nm Using a Time-Stretch and Supercontinuum Spectral Broadening Dynamics. IEEE Photonics Journal, 14 (6). ISSN 1943-0655. (KAR id:99426)

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Official URL:
https://doi.org/10.1109/JPHOT.2022.3226820

Abstract

We present an akinetically swept light source based on a spectrally broadened mode-locked laser in all normal dis�persion optical fiber followed by a linear dispersive time stretch and a regenerative amplification stage. Developed for ultrafast swept-source optical coherence tomography (SS-OCT), the source

enables the demonstration of A-scan rate at 40 MHz with a 12 µm axial resolution. Through A-scans captured from a fast-moving object, we demonstrate that high-speed OCT is possible at 1 µm wavelength in an architecture which is not intrinsically bandwidth limited. The source therefore shows a promising route to achieving high axial resolution in high-speed swept-source OCT.

Item Type: Article
Projects: Marie Skłodowska-Curie grant agreement No 860807, UCL Institute of Ophtalmology - Moorfields Eye Hospital Grant BRC003
Uncontrolled keywords: OCT, supercontinuum generation, fast imaging, swept source
Subjects: Q Science > QC Physics > QC355 Optics
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Funders: European Union (https://ror.org/019w4f821)
Depositing User: Alejandro Martinez Jimenez
Date Deposited: 06 Jan 2023 10:24 UTC
Last Modified: 09 Jan 2023 11:48 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/99426 (The current URI for this page, for reference purposes)
Grelet, Sacha: https://orcid.org/0000-0001-7560-6478
Martínez Jiménez, Alejandro: https://orcid.org/0000-0001-5370-7817
Podoleanu, Adrian: https://orcid.org/0000-0002-4899-9656
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