Optical Detection of Solid Surface Ultrasonic Pulse Using Confocal Fabry-Perot Interferometer

[in Chinese]; [in Chinese]; [in Chinese]

Abstract

A confocal Fabry-Perot interferometer with the cavity length of about 30 cm and the bandwidth of 6 MHz is developed.The detection principle of the ultrasonic of solid surface using Fabry-Perot interferometer and its properties are described.The experimentalresults are pressented.