泥酸鋰单模换能片切割方向的计算

The Determination of the Cutting Directions of Single Mode LiNbO³ Piezoelectric Slices

摘要: 为了使铌酸锂换能器激发单一模式的机械波,晶片的切割方向必须限制在某些确定的数值上。本文将通过求解压电增劲Christoffel方程,从理论上确定这些方向并计算相应方向上的波速和机电耦合系数。

Abstract: In order to excite single mode mechanical waves from LiNbO³ piezoelectric slices, the cutting directions of these slices must be restricted to certain definite values. In this article, we will theoretically determine these single mode directions by solving the piezoelectrically stiffened Christoffel equations and calculate the corresponding wave velocities and electromechaaical coupling constants.