This article is cited in 7 papers

Laser applications and other topics in quantum electronics

Laser adaptive vector-phase hydroacoustic measuring system

R. V. Romashko^ab, Yu. N. Kulchin^ab, D. V. Storozhenko^a, M. N. Bezruk^a, V. P. Dzyuba<sup>a

a</sup> Institute for Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok
^b Far Eastern Federal University, Vladivostok

Abstract: We have developed and experimentally implemented an adaptive laser vector-phase hydroacoustic measuring system, which allows one to determine the total acoustic intensity vector. A receiving element of the measuring system comprises six spatially separated fibre-optic coil-type sensors. Signals from the sensors are phase demodulated by using a six-channel adaptive holographic interferometer based on dynamic holograms multiplexed in a photorefractive CdTe crystal. Performance of the developed measuring system has been experimentally tested by determining the bearing and localisation of a source of a weak hydroacoustic field.

Keywords: fibre-optic sensor, adaptive interferometer, dynamic hologram, photorefractive crystal, hydrophone, vector-phase sensor, acoustic bearing.

Received: 14.12.2020

 English version: Quantum Electronics, 2021, 51:3, 265–271

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