High-speed low-cost line-field spectral-domain optical coherence tomography for industrial applications


Yang, Xingyu ORCID: 0000-0003-2871-8025, Zhang, Zijian ORCID: 0000-0002-3004-6697, Li, Xinhua, Lin, Hungyen, Lawman, Samuel ORCID: 0000-0003-2695-4366, Stoyanov, Stoyan, Tilford, Timothy, Hu, Yihua, Shen, Yaochun ORCID: 0000-0002-8915-1993 and Zheng, Yalin ORCID: 0000-0002-7873-0922 (2025) High-speed low-cost line-field spectral-domain optical coherence tomography for industrial applications. Optics and Lasers in Engineering, 184. p. 108631. ISSN 0143-8166

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Abstract

The applications of Optical Coherence Tomography (OCT) systems have been extensively explored in clinical settings and have attracted growing interest in other fields. Factors such as speed and cost are often prioritized over high resolution and power efficiency in industrial applications. Modern OCT systems typically operate at speeds between 20k-70k A-scans/s and are priced at least $50k. We report a line-field OCT with a high imaging speed of 430k A-scans/s, by operating a 2D camera in 8-bit mode, at a cost of $3.2k. The reported OCT system provides an axial resolution of 9 µm in air and achieves a maximum on-axis signal-to-noise ratio and sensitivity of 68.8 dB and 88.8 dB, respectively. We demonstrate the practical use of the system by measuring, visualizing, and segmenting samples of Printed Circuit Boards, pharmaceutical tablets, and pea seeds.

Item Type: Article
Additional Information: Source info: OLEN-D-24-01275
Uncontrolled Keywords: Optical Coherence Tomography, Low-cost, Non-destructive Evaluation, 3D imaging, High-speed, Simulation
Divisions: Faculty of Health and Life Sciences
Faculty of Health and Life Sciences > Institute of Life Courses and Medical Sciences
Depositing User: Symplectic Admin
Date Deposited: 10 Oct 2024 14:46
Last Modified: 13 Feb 2025 12:28
DOI: 10.1016/j.optlaseng.2024.108631
Open Access URL: https://doi.org/10.1016/j.optlaseng.2024.108631
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3184995
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