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30 December 1976 Motion Limitations In Acoustic Holography Using An Electronic Reference
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It is well known that during the recording of an optical hologram the relative distances among object, holographic plate and light source must remain constant to within half a wavelength, otherwise the interference fringe will be completely blurred and not recorded. This blurring is due to the time integration of the received wavefront which takes place in the photographic emulsion. In acoustical holography, on the other hand, the situation is different, because the output of the piezoelectric transducers which are normally used as detectors follows the acoustic input without any integration. As a result, object motions cause a distortion of the fringes and frequently a shift of the holdgraphic pattern takes place. It should be pointed out, however, that in practice there could always be a small amount of time integration in the processing electronics which will cause a small amount of blurring of the holographic fringes.
© (1976) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. E. Coello-Vera, L. Schlussler, J. Fontana, G. Flesher, and G. Wade "Motion Limitations In Acoustic Holography Using An Electronic Reference", Proc. SPIE 0090, Acousto-Optics: Device Development/Instrumentation/Applications, (30 December 1976);

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