Scanning dynamic light scattering optical coherence tomography for measurement of high omnidirectional flow velocities

Journal article (2022)

Authors

K. Cheishvili ImPhys/Computational Imaging - AS
J. Kalkman ImPhys/Computational Imaging - AS
Research Group
ImPhys/Computational Imaging (AS) (TU Delft)
Copyright: © 2022 K. Cheishvili, J. Kalkman
DOI: https://doi.org/10.1364/OE.456139
More Info
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Published Date

2022

Language

English

Faculty

Applied Sciences

Department

ImPhys/Imaging Physics

Research Group

ImPhys/Computational Imaging

Abstract

We show scanning dynamic light scattering optical coherence tomography (OCT) omnidirectional flow measurements. Our method improves the velocity measurement limit over conventional correlation-based or phase-resolved Doppler OCT by more than a factor of 2. Our technique is applicable without a-priori knowledge of the flow geometry as our method works both for non-zero Doppler angle and non-ideal scan alignment. In addition, the method improves the particle diffusion coefficient estimation for particles under flow.