Abstract
A mobile adaptive holographic laser hydrophone based on a dynamic hologram formed in a photorefractive crystal is developed. The hydrophone sensitivity is to –163 dB (rel. 1V/μPa) or 8.6 · 10−3 rad/Pa in the frequency range of 1–15 kHz. Field tests of the hydrophone were performed in water area of a sea bay. The results confirm the efficiency of the use of measuring systems based on adaptive holographic interferometers to solve problems of recording weak signals (acoustic, hydroacoustic, and others) under non-laboratory conditions.
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Original Russian Text © R.V. Romashko, M.N. Bezruk, S.A. Ermolaev, I.N. Zavestovskaya, Yu.N. Kulchin, 2017, published in Kratkie Soobshcheniya po Fizike, 2017, Vol. 44, No. 7, pp. 32–39.
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Romashko, R.V., Bezruk, M.N., Ermolaev, S.A. et al. Mobile adaptive holographic laser hydrophone. Bull. Lebedev Phys. Inst. 44, 205–209 (2017). https://doi.org/10.3103/S1068335617070053
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DOI: https://doi.org/10.3103/S1068335617070053