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arXiv · 2501.12999

Characterization of a fiber laser hydrophone for acoustic neutrino detection

E. J. Buis·A. M. von Benda-Beckmann·E. Doppenberg·J. Dorant·T. H. Jansen·P. Toet·P. Verhooren·J. de Vreugd
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Abstract

This paper presents the development and characterization of a fiber laser hydrophone designed for deep-sea applications, with a focus on detecting neutrino interactions via their acoustic signatures. The hydrophone design includes a static pressure compensation mechanism, ensuring reliable operation at depths exceeding 1 km. The performance of the hydrophone was evaluated through laboratory tests and experiments in an anechoic basin, where its transfer function was measured before and after a 140-bar pressure cycle. The results show that the hydrophone maintains its sensitivity, with resonance peaks identified in both low- and high-frequency ranges. The hydrophone's sensitivity to acoustic signals was also compared to ambient sea state noise levels, demonstrating compatibility with the lowest noise conditions.

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E. J. Buis, A. M. von Benda-Beckmann, E. Doppenberg, J. Dorant, T. H. Jansen, P. Toet, P. Verhooren, J. de Vreugd. 2025-01-22. Characterization of a fiber laser hydrophone for acoustic neutrino detection. https://arxiv.org/abs/2501.12999

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