Imaging in diffuse media using ultrafast degenerate optical parametric amplification

Jennifer Watson (1) , Patrick Georges (1) , Thierry Lépine (1) , Bruno Alonzi (1) , Alain Brun (1)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Elsa

We demonstrate the application of a subpicosecond optical parametric amplifier working at degeneracy to imaging in diffuse media. This optical parametric amplifier exhibits small-signal gains greater than 104, thereby acting as a high-gain ultrafast amplifying gate. We have used it to construct the image of a grid pattern hidden behind 20 mean free paths of a highly diffusing solution of latex microspheres with a spatial resolution of 200 mm.

Domaines: Optique [physics.optics]

Jennifer Watson, Patrick Georges, Thierry Lépine, Bruno Alonzi, Alain Brun. Imaging in diffuse media using ultrafast degenerate optical parametric amplification. Optics Letters, 1995, 20 (3), pp.231-233. ⟨hal-00691268⟩