Sample tip thermal coupling in modulated laser surface excitation

摘要

A model of the a.c. thermal coupling between a sample surface and a non-contact material probe, in the case of a modulated heated sample, is analyzed. The temperature field of the sample surface is obtained in using approximated self-consistent perturbation from the heat losses via the probe channel. Numerical estimation is given for uniform and local heat sources highlighting the roles of the modulation frequency and the probe dimensions.