@article{discovery10195179, number = {8}, journal = {JASA Express Letters}, year = {2024}, title = {A fibre-optic ultrasound sensor of simple fabrication}, note = {Copyright {\copyright} 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).}, publisher = {Acoustical Society of America}, volume = {4}, month = {August}, author = {Shagroun, Fadwa and Colchester, Richard James and Alles, Erwin Jozef}, abstract = {The small size, high sensitivity, and immunity to electromagnetic interference of fibre-optic ultrasound sensors make them highly attractive for applications in biomedical imaging and metrology. Typically, such sensors rely on optically resonant structures, such as Fabry-Perot cavities, that require elaborate fabrication techniques. Here, an alternative fibre-optic ultrasound sensor is presented that comprises a simple deformable and reflective structure that was deposited using simple dip-coating. Interrogation with a laser Doppler vibrometer demonstrated how this sensor achieved a sensitivity, signal-to-noise ratio, and noise-equivalent pressure that outperformed piezoelectric hydrophones, whilst offering a highly miniature form factor, turn-key operation, and simple fabrication.}, url = {https://doi.org/10.1121/10.0028202}, issn = {2691-1191} }