title: Defocus test and defocus correction in full-field optical coherence tomography.
abstract: We report experimental evidence and correction of defocus in full-field optical coherence tomography of biological samples owing to mismatch of the refractive index of biological tissues and water. Via a metric based on the image quality, we demonstrate that we are able to compensate this index-induced defocus and to recover a sharp image in depth.
authors.affiliation: Institut Langevin, Ecole Supérieure de Physique et de Chimie Industrielles, CNRS UMR 7587, Laboratoire d'Optique Physique, 10 rue Vauquelin, 75231 Paris Cedex 05, France.
authors.forename: S
authors.initials: S
authors.lastname: Labiau
authors.forename: G
authors.initials: G
authors.lastname: David
authors.forename: S
authors.initials: S
authors.lastname: Gigan
authors.forename: A C
authors.initials: AC
authors.lastname: Boccara
mesh_terms: D005583:Fourier Analysis; D007089:Image Enhancement; D008198:Lymph Nodes; D041623:Tomography, Optical Coherence / Q000379:methods*; D014867:Water
chemical_list: D014867:Water