70 μm diameter optical probe for common-path optical coherence tomography in air and liquids

Marica Marrese; Hidde Offerhaus; Erik Paardekam; Davide Iannuzzi

doi:10.1364/OL.43.005929

70 μm diameter optical probe for common-path optical coherence tomography in air and liquids

Marica Marrese^*, Hidde Offerhaus, Erik Paardekam, Davide Iannuzzi

^*Corresponding author for this work

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

We investigate and validate a novel method to fabricate ultrathin optical probes for common-path optical coherence tomography (CP-OCT). The probes are obtained using a 65 μm barium titanate microsphere inserted into an inward concave cone chemically etched at the end of a single-mode fiber. We demonstrate that the high refractive index (n 1.95) of the barium titanate microspheres allows one to maintain high sensitivity even while imaging in liquids, reaching a sensitivity of 83 dB. Due to its low cost, flexibility, and ease of use, the probe holds promise for the development of a new generation of ultrathin needle-based OCT systems.

Original language	English
Pages (from-to)	5929-5932
Number of pages	4
Journal	Optics Letters
Volume	43
Issue number	24
Early online date	4 Dec 2018
DOIs	https://doi.org/10.1364/OL.43.005929
Publication status	Published - 15 Dec 2018

Funding

H2020 European Research Council (ERC) under the European Union’s Seventh Framework Programme (FP/20072013)/ERC grant agreement no. (615170). The authors acknowledge Martin Slaman, Johannes F. de Boer, and Fabio Feroldi for their input and technical support. Disclosures: D. Iannuzzi declares potential conflict of interest as co-founder, shareholder, and advisor of Optics11.

Funders	Funder number
H2020 European Research Council	615170
Seventh Framework Programme	FP/20072013

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1364/OL.43.005929

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title = "70 μm diameter optical probe for common-path optical coherence tomography in air and liquids",

abstract = "We investigate and validate a novel method to fabricate ultrathin optical probes for common-path optical coherence tomography (CP-OCT). The probes are obtained using a 65 μm barium titanate microsphere inserted into an inward concave cone chemically etched at the end of a single-mode fiber. We demonstrate that the high refractive index (n 1.95) of the barium titanate microspheres allows one to maintain high sensitivity even while imaging in liquids, reaching a sensitivity of 83 dB. Due to its low cost, flexibility, and ease of use, the probe holds promise for the development of a new generation of ultrathin needle-based OCT systems.",

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AU - Marrese, Marica

AU - Offerhaus, Hidde

AU - Paardekam, Erik

AU - Iannuzzi, Davide

PY - 2018/12/15

Y1 - 2018/12/15

N2 - We investigate and validate a novel method to fabricate ultrathin optical probes for common-path optical coherence tomography (CP-OCT). The probes are obtained using a 65 μm barium titanate microsphere inserted into an inward concave cone chemically etched at the end of a single-mode fiber. We demonstrate that the high refractive index (n 1.95) of the barium titanate microspheres allows one to maintain high sensitivity even while imaging in liquids, reaching a sensitivity of 83 dB. Due to its low cost, flexibility, and ease of use, the probe holds promise for the development of a new generation of ultrathin needle-based OCT systems.

AB - We investigate and validate a novel method to fabricate ultrathin optical probes for common-path optical coherence tomography (CP-OCT). The probes are obtained using a 65 μm barium titanate microsphere inserted into an inward concave cone chemically etched at the end of a single-mode fiber. We demonstrate that the high refractive index (n 1.95) of the barium titanate microspheres allows one to maintain high sensitivity even while imaging in liquids, reaching a sensitivity of 83 dB. Due to its low cost, flexibility, and ease of use, the probe holds promise for the development of a new generation of ultrathin needle-based OCT systems.

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70 μm diameter optical probe for common-path optical coherence tomography in air and liquids

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