Remote Imaging Laser-Induced Breakdown Spectroscopy and Laser-Induced Fluorescence Spectroscopy Using Nanosecond Pulses from a Mobile Lidar System

Authors: Grönlund, Rasmus¹; Lundqvist, Mats¹; Svanberg, Sune¹

Source: Applied Spectroscopy, Volume 60, Issue 8, Pages 196A-216A and 833-950 (August 2006) , pp. 853-859(7)

Publisher: Society for Applied Spectroscopy

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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.

Keywords: LASER-INDUCED BREAKDOWN SPECTROSCOPY; LIBS; LASER-INDUCED FLUORESCENCE; LIF; LIDAR; REMOTE SENSING

Document Type: Research article

DOI: 10.1366/000370206778062138

Affiliations: 1: Atomic Physics Division, Lund Institute of Technology, P.O. Box 118, SE-221 00 Lund, Sweden

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