The measurement of underwater sound with optical diffraction by liquid surface wave
Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, China
2 Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing, China
3 College of Engineering Science and Technology, Shanghai Ocean University, Shanghai, China
Accepted: 10 September 2020
Published online: 23 September 2020
The objective of this work is to detect underwater sound with light diffracted by liquid surface wave (LSW). An experimental setup for underwater detection with a converter is established. The diffraction patterns by LSW are obtained. By analyzing the fringes, the characteristics of those relating to both amplitude and wavelength of LSW and underwater sound are achieved. Meanwhile, the transformation model of waves from underwater into LSW is proposed. The dependence of the amplitudes on the diameter of the converter is obtained by utilizing droplet-floating model. Finally, a comparison between the model and the experiment supports these observations.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020