Description: High frequency acoustic waves propagating within a thin anisotropic plate were imaged using a hybrid system consisting of an acoustic lens (Frequency: 200MHz; Point Focus) for point excitation on one side and a laser displacement interferometer for point detection on the opposite side. The laser beam spot was about 5µm diameter on the surface and the sample was scanned to provide an image of the lateral spatial distribution of the resultant displacement. Theoretical prediction of the resultant displacement was performed using the Angular Spectrum Analysis approach for propagation through the  oriented silicon. Comparison of the theoretical predictions with experimental measurements is presented.
Date: April 1, 2007
Creator: Miyasaka, Chiaki; Telschow, Kenneth L.; Sadler, Jeffry T. & Maev, Roman. Gr.
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