Fast wavefront adaptive holography in Nd:YVO4 for ultrasound optical tomography imaging

Baptiste Jayet (1, 2) , J-P Huignard (2) , F Ramaz (2)

1 UON - University of Nottingham, UK
2 IL - Institut Langevin - Ondes et Images (UMR7587)

Several approaches exist to perform acousto-optic imaging of multiple-scattering media such as biological samples. Up to now, most of the coherent detection methods use holographic setup based on photore-fractive crystals such as BSO or SPS. One of the issue of these techniques is the moderate response time compared to the speckle decorrelation time in biological sample. We introduce a new approach for the holographic detection based on two-wave mixing in a Nd:YVO 4 gain medium enabling us to perform a fast wavefront adaption (50 µs) of the speckle field from a multiple-scattering sample.

Domaines: Optique [physics.optics]; Optique / photonique

Baptiste Jayet, J-P Huignard, F Ramaz. Fast wavefront adaptive holography in Nd:YVO4 for ultrasound optical tomography imaging. Optics Express, 2014. ⟨hal-01696353⟩