Femtosecond heterodyne pump probe platform

We present a femtosecond heterodyne pump probe platform with electronically synchronized Ytterbium laser. The main goal of this platform is to provide thermal characterization at short space and time scales. Picosecond acoustic phenomena can also be observed and used to extract information such as acoustic wave velocities. Thermal conductivities and thermal interface resistances can be extracted for the different layers in the studied sample by fitting thermal models with experimental data. To characterize laterally structured samples, solid immersion lenses have been fabricated and used to increase the spatial resolution.