The generation of large-amplitude surface acoustic waves induced by a moving laser source

This letter focuses on the non-contact generation of surface acoustic waves by using a continuous wave laser moving along sample surface. The desired large-amplitude can be generated efficiently if speed matches Rayleigh value, which is typical characteristic excitation method. different amplitudes were at speeds, and largest amplitude occurred when approached velocity material. Subsequently, influence distance wave’s under resonance conditions was investigated. waves’ grew linearly with laser’s in elastic range. In brief, this paper provides novel method to excite large simply changing light.