Hemera is a center of linear and nonlinear optical spectroscopy dedicated to the non-invasive multi-scale analysis (molecular, nanometric, micrometric) of the physico-chemical properties of materials surfaces and interfaces between materials, whatever their nature (metal, semiconductor, insulator, (bio)molecules) or their physical phase (solid, liquid, gaseous)

The heart of Hemera consists of two tunable picosecond pulsed laser sources in the infrared (IR: 2.5-8 µm) and visible (Vis: 440-700 nm) spectral ranges giving access to:

• • • • • • • • Nonlinear Optical Two-Colour Sum-Frequency Generation Spectroscopy (2C-SFG) as the main investigation tool.

The latter makes it possible to simultaneously characterize the coupled or uncoupled vibrational and electronic properties of any kind of interface.

The typical applications probed by 2C-SFG spectroscopy are related to interfacial electrochemistry (photo-electro-catalysis) assisted or not by plasmonic or excitonic excitation for the production of energy or depollution, the analysis of nanostructured (bio)sensors for medical purposes, the characterization of self-assembled monolayer films, …

• • • • • • • • Spectroscopy by Second Harmonic Generation (SHG)
              • Resonant Fluorescence Spectroscopy
              • Resonant Raman Spectroscopy (RRS)