Scanning dynamic light scattering optical coherence tomography for measurement of high omnidirectional flow velocities
K. Cheishvili (TU Delft - ImPhys/Kalkman group)
J. Kalkman (TU Delft - ImPhys/Kalkman group, TU Delft - ImPhys/Computational Imaging)
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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.