title: Synthetic aperture laser optical feedback imaging using galvanometric scanning.
abstract: We describe a new one-dimensional synthetic aperture imaging laser radar (ladar) using the resonant sensitivity of a microchip laser to frequency-shifted optical feedback and galvanometric scanning of the target under investigation. In our experiment, the laser is both the source and the detector, providing optical amplification with self-aligned heterodyne detection. By using galvanometric scanning, we achieve an along-track spatial resolution better than the diffraction limit.
authors.affiliation: Laboratoire de Spectrométrie Physique, Université Joseph Fourier de Grenoble, UMR 5588, 38402 Saint-Martin d'Hères, France.
authors.forename: Arnaud
authors.initials: A
authors.lastname: Witomski
authors.forename: Eric
authors.initials: E
authors.lastname: Lacot
authors.forename: Olivier
authors.initials: O
authors.lastname: Hugon
authors.forename: Olivier
authors.initials: O
authors.lastname: Jacquin