Commissariat a L'energie Atomique Et Aux Energies Alternatives

Universitë De Bordeaux

Institut Polytechnique De Bordeaux

Centre Nationale De La Recherche Scientifique

Institut D'optique Graduate School

Ecole Nationale Superieure Des Arts Et Metiers

Centre National De La Recherche Scientifique

Ecole Nationale Superieure D'arts Et Metiers (Ensam)

Bertrand Audoin

Eric Cormier

Jérôme Lhermite

Yannick Guillet

Adrien Aubourg

Giorgio Santarelli

Disclosed is an acoustic resonance spectrometry system for analysing a sample, which includes an optical pump-probe device adapted to generate a pump beam and a probe beam, the pump beam being consisted of a series of ultra-short pump light pulses having a repetition frequency in the spectral domain of the gigahertz, the pump beam being directed towards an optoacoustic transducer to generate a periodic grating of coherent acoustic phonons in the sample, the probe beam being directed towards the sample to form a scattering beam of the probe beam on the grating of phonons, a frequency variation device being adapted to vary the repetition frequency of the pump beam in a spectral range and a photo-detection system configured to measure a scattering signal as a function of the repetition frequency in the spectral range.

Acoustic resonance spectrometry system and method

Growing community of inventors

Pessac, France

Bertrand Audoin