1. Determination of flow velocity vector based on Doppler shift and spectrum broadening with optical coherence tomography

    Determination of flow velocity vector based on Doppler shift and spectrum broadening with optical coherence tomography
    We describe a technique that uses Doppler optical coherence tomography to estimate accurately the scattering fluid-flow velocity without a priori knowledge of the Doppler angle. Our technique is based on the combined use of the Doppler shift on the interference signal and the Doppler spectrum broadening caused by the particles moving across the probe beam. It is shown that the estimated values of the Doppler angle and average fluid velocity from the experiments agree well with the preset values.
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