Transient reflecting gratings for the investigation of photothermal and photoacoustic phenomena localized near surfaces and interfaces

摘要

Transient reflecting grating methods have good potential in the investigation of ultrafast photothermal phenomena at opaque subsurfaces. Various applications of ultrasonic and thermal spectroscopies, electrochemical interface monitoring, and imaging are surveyed. Some examples are presented for quantitative determinations of elastic and thermal properties in inhomogeneous materials with tens-of-nanometers' structures.