Experiments on optically controlled ultrasonic transducers

Date

1978

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

This thesis deals with the fabrication and characterization of some scaled-down OATs (opto-acoustic transducers). The purpose of such devices is to modulate spatial ultrasonic variations with optical control so that problems associated with focusing and scanning of the sound beam are transferred from the acoustic domain into the optical domain. Several types of OATs have been built. Results for acoustic switching ratios in experiments show good consistency with theoretical predictions. Equivalent circuit models are established to provide feedback to aid the design, analysis and optimization of OATs. The resemblance of OAT output acoustic pattern to the incident optical pattern and the acoustic pattern at the focal plane are investigated theoretically. Suggestions for future system development are made.

Description

Keywords

Citation