SYSTEM AND METHOD FOR SELECTING OPTIMAL BEAM INTENSITY FOR ULTRASOUND EXCITATION WITH MAXIMUM AMPLITUDE

摘要

A system for selecting an optimal beam intensity for the generation of a laser ultrasound wave with the maximum amplitude according to one embodiment of the present invention comprises: a laser generator which emits a laser beam to a sample; a lens which is located in a position between the sample and the laser generator and changes the intensity of the laser beam according to the change of the position; a transducer which measures an acoustic noise by plasma generated in the sample according to the intensity change of the laser beam; an ultrasound receiver which receives the ultrasound wave generated in the sample according to the intensity change of the laser beam; and a single analyzing device which selects the optimal beam intensity of the laser beam to maximize the amplitude of the ultrasound wave based on the measurement result of the acoustic noise.