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

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Krstajic, Nikola and Matcher, Stephen J. and Childs, David and Steenbergen, Wiendelt and Hogg, Richard and Smallwood, Rod (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). p. 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 µm) 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:© IOP Publishing
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/76397
Official URL:http://dx.doi.org/10.1088/0957-0233/20/10/107002
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