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Schematic of experimental setup: sound incident on the right side generates Rayleigh waves that tunnel through vertical acoustic barrier.
Acousto-optic schlieren picture of the Schoch effect (accompanied by null strip in between specular and nonspecular reflected beams) in the absence of an acoustic barrier.
Similar to Fig. 2 with the spot of incidence near to sound barrier (indicated by vertical lines on the figure).
Similar to Fig. 3 with bounded beam coinciding with null strip base.
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