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

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

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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 languageUndefined
Title of host publicationOptical Coherence Tomography and Coherence Techniques IV
EditorsPeter E. Andersen, Brett E. Bouma
ISBN (Print)9780819476487
Publication statusPublished - 2009
EventOptical Coherence Tomography and Coherence Techniques IV - Munich, Germany
Duration: 1 Jan 20091 Jan 2009

Publication series

NameProceedings of SPIE-OSA Biomedical Optics
ISSN (Print)1605-7422


ConferenceOptical Coherence Tomography and Coherence Techniques IV


  • Optical Coherence Tomography
  • optical coherence microscopy
  • IR-77738
  • coherence functionmeasurement
  • dynamic focusing

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