Salt water for optical breakdown laser-generated sound

Duo-Min He; Anand Krishna Asundi

doi:10.1117/12.323151

2 October 1998 Salt water for optical breakdown laser-generated sound

Duo-Min He, Anand Krishna Asundi

Proceedings Volume 3464, Optical Devices and Methods for Microwave/Millimeter-Wave and Frontier Applications; (1998) https://doi.org/10.1117/12.323151
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

One possibility for communicating from an airplane above water surface to submarinein sea involves the use of laser-generated sound. In previous work, optical breakdown laser-acoustic pulses in fresh water have been studied and in intense sound source has been excited. In this paper, five kinds of salt water having salinities 1.3%, 2.6%, 3.9%, 5.2% and 6.5% (max salinity of seawater near 4.0%), have been broken down to generate underwater acoustic pulse signals by Q-switched YAG- Nd laser with different pulse energies. After detail analyzing both in time domain and frequency domain, the fact that the salinity of water does not have much influence on laser- acoustic pulse signal would be found. Also, some slight but interesting differences due to different salinity are introduced.

Citation Download Citation

Duo-Min He and Anand Krishna Asundi "Salt water for optical breakdown laser-generated sound", Proc. SPIE 3464, Optical Devices and Methods for Microwave/Millimeter-Wave and Frontier Applications, (2 October 1998); https://doi.org/10.1117/12.323151

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