Primary calibration of hydrophones with extended frequency range 1 to 70 MHz using optical interferometry

Abstract

A technique for the primary calibration of hydrophones based on an optical principle is presented. An interferometer determines the displacement of a pellicle mounted on the surface of the tank fluid perpendicular to the sound propagation axis; the known acoustic field is then measured using the hydrophone. The application range extends from 1 to 50 MHz and… (More)
DOI: 10.1109/58.796135

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