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arXiv · 2005.12266

Background-free fibre optic Brillouin probe for remote mapping of micromechanics

YuChen Xiang·Carin Basirun·Joshua Chou·Majid E. Warkiani·Peter Török·Yingying Wang·Shoufei Gao·Irina V. Kabakova
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Abstract

Brillouin spectroscopy is a century-old technique that has recently received renewed interest, as modern instrumentation has transformed it into a powerful contactless and label-free probe of micromechanical properties for biomedical applications. In particular, to fully harness the non-contact and non-destructive nature of Brillouin imaging, there is strong motivation to develop a fibre-integrated device and extend the technology into the domain of in vivo and in situ operation, such as for medical diagnostics. This work presents the first demonstration of a fibre optic Brillouin probe that is capable of mapping the mechanical properties of a tissue-mimicking phantom. This is achieved through combination of miniaturised optical design, advanced hollow-core fibre fabrication and high-resolution 3D printing. The protype probe is compact, background-free and possesses the highest collection efficiency to date, thus provides the foundation of a fibre-based Brillouin device for remote in situ measurements in challenging and otherwise difficult-to-reach environments, for biomedical, material science and industrial applications.

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YuChen Xiang, Carin Basirun, Joshua Chou, Majid E. Warkiani, Peter Török, Yingying Wang, Shoufei Gao, Irina V. Kabakova. 2020-05-23. Background-free fibre optic Brillouin probe for remote mapping of micromechanics. https://arxiv.org/abs/2005.12266

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