Shadow Optoacoustic Method for Measuring Thermophysical Characteristics of Condensed Materials under Intense Impulsive Heating

The results of the development of a contactless remote technique for studying thermal characteristics of condensed matter underintense pulsed heating are presented. This technique involves measuring the speed of sound basing on the time of passage of a probing optoacoustic pulse in a target. To record an acoustic response, a schlieren system based on the shadow technique for visualizing optical phase nonuniformities was developed.