Study on the effect of beam propagation through atmospheric turbulence on standoff nanosecond laser induced breakdown spectroscopy measurements
Open Access
- 4 June 2009
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 17 (12), 10265-10276
- https://doi.org/10.1364/oe.17.010265
Abstract
We report on an experimental study of the effect of atmospheric turbulence on laser induced breakdown spectroscopy (LIBS) measurements. The characteristics of the atmosphere dictate specific performance constraints to this technology. Unlike classical laboratory LIBS systems where the distance to the sample is well known and characterized, LIBS systems working at several tens of meters to the target have specific atmospheric propagation conditions that cause the quality of the LIBS signals to be affected to a significant extent. Using a new LIBS based sensor system fitted with a nanosecond laser emitting at 1064 nm, propagation effects at distances of up to 120 m were investigated. The effects observed include wander and scintillation in the outgoing laser beam and in the return atomic emission signal. Plasmas were formed on aluminium targets. Average signal levels and signal fluctuations are measured so the effect of atmospheric turbulence on LIBS measurements is quantified.Keywords
This publication has 10 references indexed in Scilit:
- A theoretical study of atmospheric propagation of laser and return light for stand-off laser induced breakdown spectroscopy purposesSpectrochimica Acta Part B: Atomic Spectroscopy, 2008
- Laser-Induced Breakdown Spectroscopy in open-path configuration for the analysis of distant objectsSpectrochimica Acta Part B: Atomic Spectroscopy, 2007
- Remote Imaging Laser-Induced Breakdown Spectroscopy and Laser-Induced Fluorescence Spectroscopy Using Nanosecond Pulses from a Mobile Lidar SystemApplied Spectroscopy, 2006
- Laser-induced breakdown spectroscopy and its application to the remote characterisation of hazardous materialsSpectroscopy Europe, 2006
- Design, construction and assessment of a field-deployable laser-induced breakdown spectrometer for remote elemental sensingSpectrochimica Acta Part B: Atomic Spectroscopy, 2006
- Remote imaging laser-induced breakdown spectroscopy and remote cultural heritage ablative cleaningOptics Letters, 2005
- Analytical control of liquid steel in an induction melting furnace using a remote laser induced plasma spectrometerJournal of Analytical Atomic Spectrometry, 2004
- Remote, real-time, on-line monitoring of high-temperature samples by noninvasive open-path laser plasma spectrometryAnalytical and Bioanalytical Chemistry, 2003
- Remote Analysis of a Mineral Melt by Laser-Induced Plasma SpectroscopyApplied Spectroscopy, 2002
- Open-path laser-induced plasma spectrometry for remote analytical measurements on solid surfacesSpectrochimica Acta Part B: Atomic Spectroscopy, 2001