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Title: Aberration mitigation in high-resolution optical coherence tomography implementing elliptical beam design
Authors: Li, Jinhan
Xie, Jun
Liu, Linbo
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2021
Source: Li, J., Xie, J. & Liu, L. (2021). Aberration mitigation in high-resolution optical coherence tomography implementing elliptical beam design. IEEE Photonics Journal, 13(5), 5100109-.
Project: MOH-OFIRG19may-0009
Journal: IEEE Photonics Journal
Abstract: We report an elliptical beam design for aberration mitigation in high-resolution optical coherence tomography (OCT). We polished a large angle on the fiber terminal facet in the sample arm to make a non-rotational symmetric beam with different numerical apertures (NA) for the two axes vertical to the optical axis. By sacrificing the resolution in the out-of-plane transverse direction, the elliptical beam mitigated the aberration introduced by the focusing optics in the OCT system. The elliptical beam with a doubled NA in the in-plane transverse direction promoted the axial field-of-view (FOV) by about 50% and increased the signal back-coupling efficiency by about 25%. We verified the feasibility of the design by imaging the USAF 1951 resolution chart, swine cornea ex vivo, and human skin in vivo. Results show that the proposed method relieves aberration-related problems in high-resolution OCT.
ISSN: 1943-0655
DOI: 10.1109/JPHOT.2021.3116326
Rights: © 2021 IEEE. This journal is 100% open access, which means that all content is freely available without charge to users or their institutions. All articles accepted after 12 June 2019 are published under a CC BY 4.0 license, and the author retains copyright. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, as long as proper attribution is given.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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