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Imaging in diffuse media using ultrafast degenerate optical parametric amplification

Abstract : 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.
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https://hal-iogs.archives-ouvertes.fr/hal-00691268
Contributor : Marie-Laure Edwards <>
Submitted on : Wednesday, April 25, 2012 - 6:11:04 PM
Last modification on : Tuesday, October 6, 2020 - 4:26:41 PM
Long-term archiving on: : Thursday, December 15, 2016 - 1:31:45 AM

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

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