Accession Number : AD0782380

Title :   Optical Probing of Surface Acoustic Wave Generation under Interdigital Transducers,

Corporate Author : TORONTO UNIV (ONTARIO) DEPT OF PHYSICS

Personal Author(s) : Vella,P. J. ; Stegeman,G. I. A.

Report Date : 12 FEB 1973

Pagination or Media Count : 2

Abstract : High-resolution optical spectroscopy was used to study the growth of continuously excited surface acoustic waves under 15- and 25-finger-pair aluminum interdigital transducers on 7-cut z-propagating lithium niobate. The observed exponential growth of the surface wave with distance is in agreement with simple coupled-mode theory. The coupling parameter leads to a direct evaluation of the effective electromechanical coupling constant K. For yz LiNbO3 a value of K squared = 0.030 plus or minus 0.003 was found. (Author)

Descriptors :   *Acoustic waves, Piezoelectric transducers, Lithium compounds, Niobates, Rayleigh waves, Acoustooptics, Argon lasers, Laser beams, Surface waves, Canada

Subject Categories : Line, Surface and Bulk Acoustic Wave Devices
      Acoustooptic and Optoacoustic Devices
      Acoustics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE