Femtosecond heterodyne pump probe platform

Guillaume Dodane (1) , Sébastien Euphrasie (1) , Damien Teyssieux (1) , Salman Salman (1) , Pascal Vairac (1) , Hatim Baida (2) , Jean-Michel Rampnoux (2) , Stefan Dilhaire (2) , François Bertin (3) , Amal Chabli (3) , Pierre Rigail (4)

1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
2 LOMA - Laboratoire Ondes et Matière d'Aquitaine
3 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
4 Amplitude Systèmes

We present a femtosecond heterodyne pump probe platform. Electronically synchronized lasers are employed. The main goal of this platform is to provide thermal characterization at short space and time scales. Picosecond acoustic phenomena can be observed and used to extract information such as acoustic wave velocity. Thermal conductivities and thermal interface resistances can be extracted for the different layers in the studied sample thanks to thermal models. To characterize laterally structured samples, Solid Immersion Lenses have been fabricated and used to increase the spatial resolution.

Mots clés: Acoustics; Laser beams; Measurement by laser beam; Probes; Lenses; Acoustic beams; Laser excitation

Domaines: Micro et nanotechnologies/Microélectronique

Guillaume Dodane, Sébastien Euphrasie, Damien Teyssieux, Salman Salman, Pascal Vairac, et al.. Femtosecond heterodyne pump probe platform. 2014 European Frequency and Time Forum (EFTF), Jun 2014, Neuchatel, Switzerland. 2014, ⟨10.1109/EFTF.2014.7331431⟩. ⟨hal-01011278⟩