1. In vivo bi-directional Doppler Fourier-domain optical coherence tomography for measurement of absolute flow velocities

    A bidirectional FDOCT system capable of measuring absolute velocities of moving scatterers is described. In this setup the sample is illuminated with two differently polarized beams. These two probe beams impinging onto the sample at a known angle. The velocity estimation is independent of the exact direction of the velocity vector in the detection plane. Evaluation measurements were performed on a rotating disc driven at well defined velocities and tilted by various small angles around to /2. Our results indicate a high correlation between pre-set and estimated velocities and the independency of these velocities from the tilting angle of the ...
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