Ultrasonic energy receiver probe utilizing opto-electrical sensi

Details Ultrasonic energy receiver probe utilizing opto-electrical sensi Ultrasonic energy receiver probe utilizing opto-electrical sensi

1977-06-01

1979-01-02

Queisser, Richard C.

Measuring and testing

Vibration

By mechanical waves

73655, G01N 2904

Patent

active

041321170

ABSTRACT:
A receiver probe for ultrasonic energy is described in which the surface deformation caused by compressive wave energy affects a thin gas-filled gap, its width being in the order of 10.sup.-7 meter. The gap is formed by opposing surfaces of an optical prism and an optical interference means. A beam of light is conducted to the boundary surface between the prism and gas. Changes in reflected and/or transmitted light beam portions resulting from compressive wave energy induced changes in gap width are sensed by opto-electric means.

REFERENCES:
patent: 4012951 (1977-03-01), Kessler
G. Alers et al., Visualization of Surface Elastic Waves on Structural Materials, Ultrasonics, Jul., 1973, pp. 174-177.
R. Mezrich et al., Ultrasonic Waves: Their Interferometric Measurement and Display, Applied Optics, Jun., 1976, pp. 1499-1505.

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