Measurement Of Liquid Surface Acoustic Wave Amplitudes Using Hene Laser Homodyne Techniques

G D Hickman; Y L Hsu; M S Lee; B S Bourgeois; S T Hsieh; S P Haimbach

doi:10.1117/12.945733

12 August 1988 Measurement Of Liquid Surface Acoustic Wave Amplitudes Using Hene Laser Homodyne Techniques

G D Hickman, Y L Hsu, M S Lee, B S Bourgeois, S T Hsieh, S P Haimbach

Proceedings Volume 0925, Ocean Optics IX; (1988) https://doi.org/10.1117/12.945733
Event: 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, 1988, Orlando, FL, United States

Abstract

Recent results in the measurement of small amplitude acoustic waves on the water surface are presented. The research was performed using laser homodyne techniques in a small laboratory water tank. The homodyne system consists of optical, acoustic and data acquisition subsystems. The optical subsystem includes a HeNe laser and polarizing components. The acoustic subsystem consists of standard low power transducers and a power amplifier. The data acquisition subsystem includes a spectrum analyzer and a personal computer. Measurements were made in the acoustic frequency range of 15 - 23 kHz and sound pressure levels of 120-180 dB re 1 APa. It .is estimated that the homodyne technique can detect surface amplitude deformations in the order of 90Å.

Citation Download Citation

G D Hickman, Y L Hsu, M S Lee, B S Bourgeois, S T Hsieh, and S P Haimbach "Measurement Of Liquid Surface Acoustic Wave Amplitudes Using Hene Laser Homodyne Techniques", Proc. SPIE 0925, Ocean Optics IX, (12 August 1988); https://doi.org/10.1117/12.945733

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