Imaging fluid flow properties using Doppler optical coherence tomography

摘要

A Doppler optical coherence tomography (DOCT) system is disclosed in which one or two OCT systems are used to produce an interference signal which is processed in combination with measured Doppler characteristics to measure the localised fluid-flow velocity in a scattering sample 40 with a micrometre-scale resolution. The system is able to describe the complete quantification of 2D or 3D fluid flow in a sample to yield tomographic images of fluid flow and structure. The present system may be implemented with optical fibres or in free space.