Multimodal probe for optical coherence tomography epidetection and micron-scale indentation

L. Bartolini*, Fabio Feroldi, J. J.A. Weda, M. Slaman, J. F. De Boer, D. Iannuzzi

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review

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We present a multimodal ferrule-top sensor designed to perform the integrated epidetection of Optical Coherence Tomography (OCT) depth-profiles and micron-scale indentation by all-optical detection. By scanning a sample under the probe, we can obtain structural cross-section images and identify a region-of-interest in a nonhomogeneous sample. Then, with the same probe and setup, we can immediately target that area with a series of spherical-indentation measurements, in which the applied load is known with a μN precision, the indentation depth with sub-μm precision and a maximum contact radius of 100μm. Thanks to the visualization of the internal structure of the sample, we can gain a better insight into the observed mechanical behavior. The ability to impart a small, confined load, and perform OCT A-scans at the same time, could lead to an alternative, high transverse resolution, Optical Coherence Elastography (OCE) sensor.

Original languageEnglish
Article number1742007
JournalJournal of Innovative Optical Health Sciences
Issue number6
Publication statusPublished - 1 Nov 2017


The authors would like to thank M. Marrese for her input and fruitful discussions. The research leading to these results is supported by the Dutch Technology Foundation (STW) under the OMNE program (13183) and has received funding from LASERLAB-EUROPE under the EC's Seventh Framework Program (Grant agreement No. 284464) and the European Research Council (615170).

FundersFunder number
Seventh Framework Programme615170, 284464
European Research Council
Stichting voor de Technische Wetenschappen13183


    • epidetection
    • indentation
    • microindentation
    • multimodal sensor
    • optical coherence tomography
    • Optomechanical


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