A novel dual beam Optical Coherence Tomography (OCT) system is presented for microfluidics applications. The dual sensing-light-sheet approach presented here achieves high velocity flow measurement because the rapid re-imaging by the second sensing-light-sheet allows for particle tracking between each image-frame of the pair. We have demonstrated measurements of microchannel flow using 10 μm particles in a 700 μm deep channel with peak velocities of approximately 0.28 metres-per-second (m/s), approximately two orders of magnitude higher than previously reported OCT systems operating at a few millimeters-per-second.

Date Published: 18 August 2018
PDF: 7 pages
Proc. SPIE 10749, Interferometry XIX, 107490M (18 August 2018); doi: 10.1117/12.2319582

Published in SPIE Proceedings Vol. 10749:
Interferometry XIX
Katherine Creath; Jan Burke; Michael B. North Morris; Angela D. Davies, Editor(s)