摘要
研究了液体表面波振幅随激发深度的变化特性.采用探针式激发器激发,观察到液体表面波的衍射图样;改变激发深度,得到不同激发深度处的衍射图样;根据衍射图样分布与表面波振幅之间的关系并进行计算机编程,获得表面波振幅与激发深度之间的关系.用最小二乘法拟合,发现:液体表面波振幅随激发深度的增加而减小,并呈指数规律.
It is investigated that the characteristics of the liquid surface wave amplitude change with the exited depth.Diffraction patterns from the liquid surface acoustic waves（SAW）,which is produced by the exiting needle,were observed.Diffraction patterns from SAW corresponding different exiting depths were found.The relation between the diffraction pattern distribution and the surface acoustic wave amplitude was achieved and this relation was programmed.Then,the dependence of the amplitude on the exited depth was obtained further.It was found that the surface acoustic waves amplitude decreases exponentially as the exited depth increase based on the least square method.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2011年第6期828-830,共3页
Acta Photonica Sinica
基金
陕西省重大科技创新专项基金(No.2010VKC01-18)
陕西省自然科学基金(No.2010JM1003)资助
关键词
表面波
声光效应
激发深度
振幅
Exited depth
Surface acoustic wave
Amplitude
