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Evaluation of a cheap ultrasonic stage for light source coherence function measurement, optical coherence tomography and dynamic focusing

Krstajic, N., Matcher, S.J., Childs, D., Steenbergen, W., Hogg, R. and Smallwood, R. (2009) Evaluation of a cheap ultrasonic stage for light source coherence function measurement, optical coherence tomography and dynamic focusing. Measurement Science and Technology, 20 (10). Art No.107002. ISSN 0957-0233

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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 an optical coherence tomography (OCT) setup; (2) as a delay line measuring coherence function of a low coherence source (e. g. superluminescent diode) and (3) in a dynamic focusing arrangement. The results are as follows: the stage is suitable for coherence function measurement (coherence length up to 70 mu m) of the light source and dynamic focusing. We found it unsuitable for OCT due to an unstable velocity profile. Despite this, the velocity profile has a repeatable shape (4% over 1000 A-scans) and slight modifications to the stage promise wider applications.

Item Type: Article
Copyright, Publisher and Additional Information: © 2009 Institute of Physics. This is an author produced version of a paper subsequently published in Measurement Science and Technology. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: optical coherence tomography; optical delay line; dynamic focusing; coherence function; ultrasonic stage
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Computer Science (Sheffield)
The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield)
The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield)
Depositing User: Miss Anthea Tucker
Date Deposited: 19 Oct 2009 11:24
Last Modified: 08 Feb 2013 16:59
Published Version: http://dx.doi.org/10.1088/0957-0233/20/10/107002
Status: Published
Publisher: Institute of Physics
Refereed: Yes
Identification Number: 10.1088/0957-0233/20/10/107002
URI: http://eprints.whiterose.ac.uk/id/eprint/9877

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