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Proceedings Paper

Off-axis full-field swept-source optical coherence tomography using holographic refocusing
Author(s): Dierck Hillmann; Gesa Franke; Laura Hinkel; Tim Bonin; Peter Koch; Gereon Hüttmann
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Paper Abstract

We demonstrate a full-field swept-source OCT using an off-axis geometry of the reference illumination. By using holographic refocusing techniques, a uniform lateral resolution is achieved over the measurement depth of approximately 80 Rayleigh lengths. Compared to a standard on-axis setup, artifacts and autocorrelation signals are suppressed and the measurement depth is doubled by resolving the complex conjugate ambiguity. Holographic refocusing was done efficiently by Fourier-domain resampling as demonstrated before in inverse scattering and holoscopy. It allowed to reconstruct a complete volume with about 10μm resolution over the complete measurement depth of more than 10mm. Off-axis full-field swept-source OCT enables high measurement depths, spanning many Rayleigh lengths with reduced artifacts.

Paper Details

Date Published: 20 March 2013
PDF: 9 pages
Proc. SPIE 8571, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII, 857104 (20 March 2013); doi: 10.1117/12.2006436
Show Author Affiliations
Dierck Hillmann, Thorlabs GmbH (Germany)
Gesa Franke, Univ. of Lübeck (Germany)
Medical Laser Ctr. Lübeck (Germany)
Laura Hinkel, Univ. of Lübeck (Germany)
Tim Bonin, Univ. of Lübeck (Germany)
Peter Koch, Thorlabs GmbH (Germany)
Gereon Hüttmann, Univ. of Lübeck (Germany)
Medical Laser Ctr. Lübeck (Germany)

Published in SPIE Proceedings Vol. 8571:
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII
James G. Fujimoto; Joseph A. Izatt; Valery V. Tuchin, Editor(s)

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