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Proceedings Paper

Measurement Of Liquid Surface Acoustic Wave Amplitudes Using Hene Laser Homodyne Techniques
Author(s): G D Hickman; Y L Hsu; M S Lee; B S Bourgeois; S T Hsieh; S P Haimbach
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Paper 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.

Paper Details

Date Published: 12 August 1988
PDF: 7 pages
Proc. SPIE 0925, Ocean Optics IX, (12 August 1988); doi: 10.1117/12.945733
Show Author Affiliations
G D Hickman, National Space Technology Laboratories (United States)
Y L Hsu, National Space Technology Laboratories (United States)
M S Lee, National Space Technology Laboratories (United States)
B S Bourgeois, National Space Technology Laboratories (United States)
S T Hsieh, National Space Technology Laboratories (United States)
S P Haimbach, National Space Technology Laboratories (United States)


Published in SPIE Proceedings Vol. 0925:
Ocean Optics IX
Marvin A. Blizard, Editor(s)

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