In order to achieve the multi-vibration source surface acousto-optical effect,two vibration sources were used to generate two low-frequency surface wave on the liquid surface at the same time,and also the clear,stable,high contrast acousto-optic diffraction fringes were observed.When the two surface waves′frequency with multiple relations,the spot positions of diffraction pattern are same as the smaller frequency alone and are part of same the larger frequency alone.The diffraction fringes of single vibrati...
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