Thermal memory effects to photothermal pulse response

Abstract

An analytical model that describes surface temperature variations of media with thermal memory stimulated by laser pulses was developed. The influence of thermal memory for semi infinite sample was analyzed by comparing our results with classical model results which neglect the thermal memory of materials for different pulse widths and for different pulse shapes. It was shown that this influence was outstanding around steep changes of the incentive flux and for short incident pulses.

Keywords

• thermal memory
• heat propagation rate
• thermal relaxation time
• thermophysical parameters
• photothermal pulse methods
• photothermal time response