title: Optical phase conjugation in Nd:YVO4 for acousto-optic detection in scattering media.
abstract: Acousto-optic imaging is a technique that maps the optical properties of a thick scattering sample with millimetric resolution. The detection of the acousto-optic signal represents a challenge, because it is very weak among a strong parasitic signal. Various methods based on holography in photorefractive crystals or digital holography have been studied. Here dynamic holography is obtained with the gain medium Nd:YVO(4). We study the experimental feasibility of a detection system based on holography in a gain medium and show acousto-optic results obtained in a 5 mm slice of chicken breast.
authors.affiliation: Institut Langevin, ESPCI ParisTech, CNRS UMR7587, 1 rue Jussieu, Paris 75005, France. baptiste.jayet@espci.fr
authors.forename: B
authors.initials: B
authors.lastname: Jayet
authors.forename: J-P
authors.initials: JP
authors.lastname: Huignard
authors.forename: F
authors.initials: F
authors.lastname: Ramaz
mesh_terms: D000162:Acoustics; D000818:Animals; D002645:Chickens; D008321:Mammary Glands, Animal / Q000000981:diagnostic imaging; D009354:Neodymium / Q000737:chemistry*; D061848:Optical Imaging; D055620:Optical Phenomena; D017785:Photons; D012542:Scattering, Radiation; D014463:Ultrasonography; D014638:Vanadates / Q000737:chemistry*; D015019:Yttrium / Q000737:chemistry*
chemical_list: D009354:Neodymium; D014638:Vanadates; D015019:Yttrium