用共焦Fabry-Perot干涉仪探测激光超声信号的研究  

Detection of Laser generated Ultrasonic Signal with a Confocal Fabry Perot Interferometer

作　　者：何存富[1] 周辛庚[1] 

机构地区：[1]清华大学

出　　处：《实验力学》1997年第1期1-6,共6页Journal of Experimental Mechanics

基　　金：国家自然科学基金

摘　　要：本文给出一种非接触式接收激光超声信号的方法，利用自行研制的实验系统，探测到用ＰＺＴ换能器和脉冲激光产生的超声信号，其信噪比足以满足进一步的电子学信号处理要求。In this paper,a non contact system for detecting laser generated ultrasonic signal is described.With this system,the ultrasonic waves generated with both PZT longitudinal transducer and pulsed laser have been detected,and the ratio of signal to nosie is good enough to satisfy the requirement for further electronical signal procession.This is the foundation of applying this technique to NDT.

关 键 词：F-P干涉仪 激光超声 无损检测 

分 类 号：TG115.28[金属学及工艺—物理冶金]