摘要
本文讨论了晶体表面倾斜金属线条对声表面波的反射特性,利用简单模型和多次反射模型详细讨论了等线宽、等周期金属线条反射阵的声场分布和反射特性。另一方面,利用扫描激光探针的方法测量了上述反射阵引起的声表面波反射声场,且比较了理论和实验结果,说明反射阵中多次反射声波不能忽略,利用多次反射模型能够较好地说明声场变化的一些现象。
The reflective characteristics of SAW by slanting metal strips on the surface of Y-Z LiNbOa have been studied. Using Simple Model and Multi-Reflection Model, the reflective characteristics and the distribution of SAW by reflection array with metal strips of same width and same period have been calculated. On the other hand, using the laser probe, we have measured the reflection of SAW by the array. Theoretical and experimental results have been compared The results of Multi-Reflection Model are in good agreement with that of the experiments.
出处
《声学学报》
EI
CSCD
北大核心
1989年第1期58-67,共10页
Acta Acustica
