Visualization of acoustic wavefronts by means of acoustic stroboscopy |
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Authors: | J LapierreS Lowenthal |
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Institution: | Institut d''Optique, Faculté des Sciences, 91 - Orsay, France |
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Abstract: | The amplitude and phase distributions of a progressive acoustic wave are visualized simultaneously by means of acoustic stroboscopy. Two methods are described: (i) modulation of a laser beam by a progressive acoustic wave; (ii) modulation by a stationary wave. Spatial filtering of diffracted orders enables the progressive wavefronts to be seen as if they were stationary. |
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