ANISOTROPIC TRANSPARENT SOLID MATERIAL, SPHERICAL SURFACE ACOUSTIC WAVE ELEMENT AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an anisotropic transparent solid material which can be manufactured only by one crystal axis identification of a crystal material on the basis of a mark even in a post process including surface processing such as a polishing process, by previously forming the mark indicating a crystal axis direction which does not disappear after spherical processing on a crystal sphere, by performing spherical processing after forming the mark indicating the crystal axis in the crystal material in a cut state of the material or before performing spherical processing; to provide a manufactured spherical surface acoustic element; and to provide a method capable of speedy and simply forming a mark indicating the crystal axis of the spherical surface acoustic wave element using the crystal sphere. SOLUTION: The anisotropic transparent solid material is obtained by putting a mark indicating an azimuth axis in a solid material having transparency and anisotropy by using laser light. COPYRIGHT: (C)2005,JPO&NCIPI