1 October 1992 Acousto-optical reconstruction of pulsed ultrasonic signal
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In the Fresnel zone of laser light diffracted by a sound wave, the light intensity is modulated in both time and space, and the pattern of this modulation contains all the information about the time waveform of the diffracting sound wave. A method is proposed to recompose the sound wave from the optical signal, recorded during one ultrasonic pulse period in a single point in the Fresnel region of the diffracted light. The technique can be considered as a real-time reconstruction and is applicable to both continuous and pulsed ultrasonic waves for physical parameters within the range of Raman-Nath-type diffraction.
Erik Blomme, Erik Blomme, Leroy Oswald, Leroy Oswald, "Acousto-optical reconstruction of pulsed ultrasonic signal," Optical Engineering 31(10), (1 October 1992). https://doi.org/10.1117/12.58875


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