title: Remote imaging laser-induced breakdown spectroscopy and laser-induced fluorescence spectroscopy using nanosecond pulses from a mobile lidar system.
abstract: A mobile lidar system was used in remote imaging laser-induced breakdown spectroscopy (LIBS) and laser-induced fluorescence (LIF) experiments. Also, computer-controlled remote ablation of a chosen area was demonstrated, relevant to cleaning of cultural heritage items. Nanosecond frequency-tripled Nd:YAG laser pulses at 355 nm were employed in experiments with a stand-off distance of 60 meters using pulse energies of up to 170 mJ. By coaxial transmission and common folding of the transmission and reception optical paths using a large computer-controlled mirror, full elemental imaging capability was achieved on composite targets. Different spectral identification algorithms were compared in producing thematic data based on plasma or fluorescence light.
authors.affiliation: Atomic Physics Division, Lund Institute of Technology, P.O. Box 118, SE-22100 Lund, Sweden. rasmus.gronlund@fysik.lth.se
authors.forename: Rasmus
authors.initials: R
authors.lastname: Grönlund
authors.forename: Mats
authors.initials: M
authors.lastname: Lundqvist
authors.forename: Sune
authors.initials: S
authors.lastname: Svanberg