title: Synthetic aperture laser optical feedback imaging using a translational scanning with galvanometric mirrors.
abstract: In this paper we present an experimental setup based on laser optical feedback imaging (LOFI) and on synthetic aperture with translational scanning by galvanometric mirrors for the purpose of making deep and resolved images through scattering media. We provide real two-dimensional optical synthetic aperture image of a fixed scattering target with a moving aperture and an isotropic resolution. We demonstrate theoretically and experimentally that we can keep microscope resolution beyond the working distance. A photometric balance is made, and we show that the number of photons participating in the final image decreases with the square of the reconstruction distance. This degradation is partially compensated by the high sensitivity of LOFI.
authors.affiliation: Centre National de la Recherche Scientifique/Université de Grenoble 1, Laboratoire Interdisciplinaire de Physique, UMR 5588, Grenoble, F- 38041, France. wilfried.glastre@ujf‑grenoble.fr
authors.forename: Wilfried
authors.initials: W
authors.lastname: Glastre
authors.forename: Olivier
authors.initials: O
authors.lastname: Jacquin
authors.forename: Olivier
authors.initials: O
authors.lastname: Hugon
authors.forename: Hugues
authors.initials: H
authors.lastname: Guillet de Chatellus
authors.forename: Eric
authors.initials: E
authors.lastname: Lacot