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Proceedings Paper

Evaluation of a cheap ultrasonic stage for light source coherence function measurement, optical coherence tomography, optical coherence microscopy, and dynamic focusing
Author(s): Nikola Krstajić; Stephen J. Matcher; David Childs; Wiendelt Steenbergen; Richard Hogg; Rod Smallwood
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Paper Abstract

We evaluate the performance of a cheap ultrasonic stage in setups related to optical coherence tomography. The stage was used in several configurations: 1) optical delay line in optical coherence tomography (OCT) setup; 2) as a delay line measuring coherence function of a low coherence source (e.g. superluminescent diode); 3) as a path length modulator in optical coherence microscopy (OCM) setup and finally 4) in a dynamic focusing arrangement. We evaluate each configuration and point to possible improvements either in setups or ultrasonic stage architecture. The results are as follows: the stage is suitable for coherence function measurement of the light source and, with some limitations, dynamic focusing. We found it unsuitable for OCT due to unstable velocity profile, while smaller step movement is required for OCM imaging.

Paper Details

Date Published: 14 July 2009
PDF: 13 pages
Proc. SPIE 7372, Optical Coherence Tomography and Coherence Techniques IV, 73721I (14 July 2009); doi: 10.1117/12.831787
Show Author Affiliations
Nikola Krstajić, The Univ. of Sheffield (United Kingdom)
Stephen J. Matcher, The Univ. of Sheffield (United Kingdom)
David Childs, The Univ. of Sheffield (United Kingdom)
Wiendelt Steenbergen, The Univ. of Sheffield (United Kingdom)
Institute for Biomedical Technology, Univ. of Twente (Netherlands)
Richard Hogg, The Univ. of Sheffield (United Kingdom)
Rod Smallwood, The Univ. of Sheffield (United Kingdom)


Published in SPIE Proceedings Vol. 7372:
Optical Coherence Tomography and Coherence Techniques IV
Peter E. Andersen; Brett E. Bouma, Editor(s)

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