EI / SCOPUS / CSCD 收录

中文核心期刊

激光超声位移场的共焦法布里-佩罗干涉仪检测技术

潘永东, 钱梦騄

潘永东, 钱梦騄. 激光超声位移场的共焦法布里-佩罗干涉仪检测技术[J]. 声学学报, 2003, 28(3): 207-211. DOI: 10.15949/j.cnki.0371-0025.2003.03.003
引用本文: 潘永东, 钱梦騄. 激光超声位移场的共焦法布里-佩罗干涉仪检测技术[J]. 声学学报, 2003, 28(3): 207-211. DOI: 10.15949/j.cnki.0371-0025.2003.03.003
PAN Yongdong, QIAN Menglu. The technique of detecting the laser-ultrasonic vector displacement with a confocal Fabry-Perot interferometer[J]. ACTA ACUSTICA, 2003, 28(3): 207-211. DOI: 10.15949/j.cnki.0371-0025.2003.03.003
Citation: PAN Yongdong, QIAN Menglu. The technique of detecting the laser-ultrasonic vector displacement with a confocal Fabry-Perot interferometer[J]. ACTA ACUSTICA, 2003, 28(3): 207-211. DOI: 10.15949/j.cnki.0371-0025.2003.03.003

激光超声位移场的共焦法布里-佩罗干涉仪检测技术

基金项目: 

国家自然科学基金资助项目(10174052和10134020)

详细信息
  • PACS: 
    • 43.35  (超声学, 量子声学, 声的物理效应)

The technique of detecting the laser-ultrasonic vector displacement with a confocal Fabry-Perot interferometer

  • 摘要: 一般共焦法布里-佩罗(Fabry-Perot,FP)干涉仪只能检测声场的法向位移分量,而声场的切向位移分量含有法向位移分量所不能表达的材料特性。本文在检测声场法向位移分量共焦FP干涉仪的基础上,自行研制了一新颖的双通道共焦F-P干涉仪,它同时检测来自试样表面+θ和-θ角上的散射光,通过对两路输出信号作简单的信号处理,可以得到试样表面的位移点。用该F-P干涉仪测量了脉冲激光在Ti膜上激发的Lamb波的法向和切向位移,结果与理论预计一致。
    Abstract: Generally, a confocal Fabry-Perot interferometer is only able to detect the out-of-plane component of a displacement field; while the in-plane component often has the information about the material which cannot be found in this out-of-plane component. Based on a confocal F-P interferometer set-up for detecting the out-of-plane component of a laser generated acoustic field, a novel two-channel confocal F-P interferometer is developed. The scattering lights at scattering angle +θ and -θ from sample surface are received by this F-P interferometer. The displacement vector can be obtained with simple signal processing of two channel output signals. The out-of-plane and in plane displacement component of Lamb wave generated by a laser pulse in a Ti film are measured with this F-P interferometer. The experimental results are in good agreement with the theoretical predictions.
计量
  • 文章访问数:  35
  • HTML全文浏览量:  1
  • PDF下载量:  8
  • 被引次数: 0
出版历程
  • 收稿日期:  2001-05-13
  • 修回日期:  2001-07-25
  • 网络出版日期:  2022-08-03

目录

    /

    返回文章
    返回