The use of computer generated holographic zoneplates to enhance the generation of laser ultrasound is described. An amplitude grating capable of focusing laser light onto an arc which in turn generates a near diffraction limited focus of 82MHz Rayleigh surface waves is also described. The application of zoneplates for ultrasonic nondestructive evaluation and imaging is considered.
- Computer-generated holograph
- Holograph optical elements
- Surface acoustic wave devices
ASJC Scopus subject areas
- Electrical and Electronic Engineering