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

Nikola Krstajić, Stephen J. Matcher, David Childs, Wiendelt Steenbergen, Richard Hogg, Rod Smallwood

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    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.

    Original languageEnglish
    Title of host publicationOptical Coherence Tomography and Coherence Techniques IV
    Volume7372
    DOIs
    Publication statusPublished - 1 Dec 2009
    EventOptical Coherence Tomography and Coherence Techniques IV - Munich, Germany
    Duration: 14 Jun 200917 Jun 2009

    Conference

    ConferenceOptical Coherence Tomography and Coherence Techniques IV
    CountryGermany
    CityMunich
    Period14/06/0917/06/09

    Keywords

    • Coherence function measurement
    • Dynamic focusing
    • Optical coherence microscopy
    • Optical coherence tomography

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