Abstract
The anisotropic light diffraction by bulk acoustic waves (BAWs) radiated by an interdigital transducer (IDT) operating at the leaky surface acoustic wave resonance in ZX-lithium niobate has been experimentally studied at an optical wavelength of 633nm in the range of acoustic frequencies from 35to190MHz. The possibility of optical probing of the IDT-radiated BAW properties is demonstrated. The experimentally determined values of the BAW propagation angle and velocity are 25° and 4050m∕s, respectively.
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