Applicability of fiber optic sensors to the detection of surface acoustic waves on metals

摘要

Abstract: This paper examines the detection of laser generatedsurface acoustic waves (SAWs) by fiber optic sensors. ANd:YAG laser is used to illuminate the surface of analuminum sample in various ways. Elastic waves arelaunched into the bulk and along the surface of thesample. The emphasis of the work presented is theperformance of the fiber optic sensor as compared totheoretical predictions and that of a conventionalsensor. By such analysis, the efficiency and limits ofthe fiber optic sensors for the interrogation ofsurface acoustic waves are investigated. !16