Abstract
A description is given of the analysis and experiment on Fresnel diffraction by a semitransparent straight edge object under acoustically coherence-controllable illumination. The ringing pattern of Fresnel diffraction is heavily dependent on the phase of the optical wave transmitted by a semitransparent film as well as on the Raman-Nath acoustooptic interaction parameter v, associated with acoustic pressure, and the acoustic wavelength Λ. The ringing is appreciably deformed and suppressed on both sides near the geometrical shadow edge but remains almost unchanged at a distance of ±Λ from the edge even when the parameter v is steadily increasing.
© 1984 Optical Society of America
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