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 JournalArticleAcademicpeer-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 languageEnglish
Pages (from-to)5929-5932
Number of pages4
JournalOptics Letters
Volume43
Issue number24
Early online date4 Dec 2018
DOIs
Publication statusPublished - 15 Dec 2018

Fingerprint Dive into the research topics of '70 μm diameter optical probe for common-path optical coherence tomography in air and liquids'. Together they form a unique fingerprint.

Cite this