Investigation of the laser ultrasound propagation in K9 glass using optical interferometry  

作　　者：Mengmeng Li Hongchao Zhang Jian Lu Zhonghua Shen 李梦梦;张宏超;陆健;沈中华(School of Science,Nanjing University of Science and Technology,Nanjing 210094,China;MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]School of Science,Nanjing University of Science and Technology,Nanjing 210094,China [2]MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing,Nanjing University of Science and Technology,Nanjing 210094,China

出　　处：《Chinese Optics Letters》2022年第2期51-54,共4页中国光学快报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(NNSFC)(Nos.61975080 and 11774176).

摘　　要：The propagating of laser-generated ultrasonic waves in K9 glass was investigated. Many methods have been developed to detect the laser ultrasound since laser ultrasonic waves can be used to measure material parameters or characterize materials properties. In order to reduce the measuring time, a Mach–Zehnder interferometer, a full field measuring tool,was preferred in this paper. The ultrasonic wave was produced on the K9 glass surface by a Q-switched Nd:YAG laser absorbed in a liquid layer. The interferograms were then taken at various delay times by a CCD camera after single pulse induced laser ultrasonic waves. Ultrasonic waves in the K9 glass can be observed from interferogram images. The results provide an understanding of laser ultrasound propagation in K9 glass in the lifetime.

关 键 词：laser ultrasound K9 glass optical interferometry 

分 类 号：TN24[电子电信—物理电子学]