Flow velocity measurements by frequency domain short coherence interferometry

Rainer Leitgeb; Leopold F. Schmetterer; Maciej Wojtkowski; Christoph K. Hitzenberger; Markus Sticker; Adolf Friedrich Fercher

doi:10.1117/12.470477

14 June 2002 Flow velocity measurements by frequency domain short coherence interferometry

Rainer Leitgeb, Leopold F. Schmetterer, Maciej Wojtkowski, Christoph K. Hitzenberger, Markus Sticker, Adolf Friedrich Fercher

Author Affiliations +

Proceedings Volume 4619, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications VI; (2002) https://doi.org/10.1117/12.470477
Event: International Symposium on Biomedical Optics, 2002, San Jose, CA, United States

Abstract

A method to measure the longitudinal flow velocity component based on phase resolved frequency domain optical coherence tomography (FDOCT) is introduced. At a center wavelength of 800nm the accessible velocity components ranges from 2 micrometers /s up to 2 mm/s. The upper limit is set by half the maximum frame rate of the CCD detector array. The lower limit is determined by the minimum resolvable phase change in the system, which is set by the system phase noise of 1 deg. First tests of the method include the velocity measurement of a mirror mounted on an oscillating piezo translator, and the flow of 8 micrometers latex spheres dispersed in water through a glass capillary.

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Rainer Leitgeb, Leopold F. Schmetterer, Maciej Wojtkowski, Christoph K. Hitzenberger, Markus Sticker, and Adolf Friedrich Fercher "Flow velocity measurements by frequency domain short coherence interferometry", Proc. SPIE 4619, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications VI, (14 June 2002); https://doi.org/10.1117/12.470477

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