Laser-induced Scholte wave detection at air-solid interfaces by beam deflection technique

Zhao Yan; Zhonghua Shen; Jian Lu; Xiaowu Ni

doi:10.1117/1.2710174

1 February 2007 Laser-induced Scholte wave detection at air-solid interfaces by beam deflection technique

Zhao Yan, Zhonghua Shen, Jian Lu, Xiaowu Ni

Author Affiliations +

Optical Engineering, Vol. 46, Issue 2, 024302 (February 2007). https://doi.org/10.1117/1.2710174

Abstract

Based on beam deflection technique, an air-coupled laser acoustic detector was developed to investigate the Scholte waves excited thermoelastically by Nd:YAG laser pulse action on the air-solid interfaces. By experimental measurements, we obtained the waveforms of Scholte waves at the air-aluminum, air-copper, and air-steel interfaces. According to the waveforms detected at different positions, the velocity of Scholte waves was calculated, which is a little slower than sound velocity in air. The results are then compared with theoretical prediction and are well matched with each other. Moreover, the attenuations of Scholte waves were also measured while propagating along the three interfaces. The results show that the attenuations could be negligible. Last, the interactions of laser-induced Scholte waves and surface defect are also discussed.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Zhao Yan, Zhonghua Shen, Jian Lu, and Xiaowu Ni "Laser-induced Scholte wave detection at air-solid interfaces by beam deflection technique," Optical Engineering 46(2), 024302 (1 February 2007). https://doi.org/10.1117/1.2710174

Published: 1 February 2007

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available