Anisotropy of sound velocity for a new PbB4O7 crystal as determined by the laser ultrasonic technique |
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| Authors: | XR Zhang QL Zhang YN Lu CM Gan PZ Fu H Yin JL Zhou |
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| Institution: | (1) State Key Lab. of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093, P.R. China (Fax: +86-25/3605 557, E-mail: postsndi@nju.edu.cn, paslab@nju.edu.cn), CN;(2) Department of Electronic Engineering and Information Science, University of Science and Technology of China (USTC), Hefei 230026, P.R. China (Fax: 86-551/3631 760), CN;(3) Department of Applied Chemistry USTC, Hefei 230027, P.R. China, CN |
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| Abstract: | 4 O7 crystal is a new nonlinear optical crystal. For the first time the anisotropy of the velocities of its longitudinal and surface
acoustic waves (SAWs) are determined by laser ultrasonic technique. The velocities of surface waves for X-, Y-, and Z-cut
crystals are also calculated. The theoretical calculations of slowness curves are in good agreement with experimental results.
The SAW slowness curve is elliptical for Y- or Z-cut crystal wafers, and circular for an X-cut wafer.
Received: 27 January 1997/Accepted: 30 July 1997 |
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| Keywords: | PACS: 62 65 +k 43 35 Ud |
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