We report on wide-field imaging of pulsatile motion induced by blood flow using heterodyne holographic interferometry on the thumb of a healthy volunteer, in real-time. Optical Doppler images were measured with green laser light by a frequency-shifted Mach-Zehnder interferometer in off-axis configuration. The recorded optical signal was linked to local instantaneous out-of-plane motion of the skin at velocities of a few hundreds of microns per second, and compared to blood pulse monitored by plethysmoraphy during an occlusion-reperfusion experiment.
@article{arxiv.1501.05776,
title = {Holographic laser Doppler imaging of pulsatile blood flow},
author = {Jeffrey Bencteux and Pierre Pagnoux and Thomas Kostas and Sam Bayat and Michael Atlan},
journal= {arXiv preprint arXiv:1501.05776},
year = {2015}
}