Ultrasonic field mapping through a multimode optical fibre

Benjamin Keenlyside; Dylan Marques; Nathaniel Redgewell; Maxim Cherkashin; David Phillips; Edward Zhang; Paul Beard; James Guggenheim

doi:10.1117/12.2675616

11 August 2023 Ultrasonic field mapping through a multimode optical fibre

Benjamin Keenlyside, Dylan Marques, Nathaniel Redgewell, Maxim Cherkashin, David Phillips, Edward Zhang, Paul Beard, James Guggenheim

Author Affiliations +

Proceedings Volume 12631, Opto-Acoustic Methods and Applications in Biophotonics VI; 126310S (2023) https://doi.org/10.1117/12.2675616
Event: European Conferences on Biomedical Optics, 2023, Munich, Germany

Abstract

Miniaturising ultrasonic field mapping systems could lead to novel endoscopes capable of photoacoustic tomography and other techniques. However, developing high-resolution arrays of sensitive, sub-millimetre scale ultrasound sensors presents a challenge for traditional piezoelectric transducers. To address this challenge, we conceived an ultrasonic detection concept in which an optical ultrasonic sensor array is read out using a laser beam scanned through a 0.24 mm diameter multimode optical fibre using optical wavefront shaping. We demonstrate this system enables ultrasonic field mapping with ⪆2500 measurement points, paving the way to developing miniaturized photoacoustic endoscopes and other ultrasonic systems based on the presented concept.

Citation Download Citation

Benjamin Keenlyside, Dylan Marques, Nathaniel Redgewell, Maxim Cherkashin, David Phillips, Edward Zhang, Paul Beard, and James Guggenheim "Ultrasonic field mapping through a multimode optical fibre", Proc. SPIE 12631, Opto-Acoustic Methods and Applications in Biophotonics VI, 126310S (11 August 2023); https://doi.org/10.1117/12.2675616

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