用激光布里渊散射法测量单晶LiNbO<sub>3</sub>的声速及其各向异性

用激光布里渊散射法测量单晶LiNbO₃的声速及其各向异性

摘要: 近几年迅速发展起来的激光布里渊散射（Brillouin scattering）是研究固体、液体、气体中低频元激发的有力工具。在它的众多应用中,声速及其各向异性的测量是最基本的和最重要的。

Abstract: A novel method, Brillouin scattering technique, was used to study the sound velocity and its anisotopy of single crystal LiNbO₃. The agreement between our result and the one by triditional method shows that this method has the advantages of simplicity, quick and higher reliability, It is especially suitable for small samples, the sound velocity of which is difficult to measure by other means.