A compact LIBS system for industrial applications

B. Noharet; C. Sterner; T. Irebo; J. Gurell; A. Bengtson; R. Vainik; H. Karlsson; E. Illy

doi:10.1117/12.2075336

13 March 2015 A compact LIBS system for industrial applications

B. Noharet, C. Sterner, T. Irebo, J. Gurell, A. Bengtson, R. Vainik, H. Karlsson, E. Illy

Proceedings Volume 9369, Photonic Instrumentation Engineering II; 936904 (2015) https://doi.org/10.1117/12.2075336
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

In recent years, laser-induced breakdown spectroscopy (LIBS) has been established as a promising analytical tool for online chemical analysis. The emitted light spectrum is analyzed for instantaneous determination of the elemental composition of the sample, enabling on-line classification of materials. Two major strengths of the technique are the possibilities to perform both fast and remote chemical analysis to determine the elemental composition of the samples under test. In order to reduce the size of LIBS systems, the use of a compact Q-switched diode-pumped solid-state laser (DPSSL) in a LIBS system is evaluated for the industrial sorting of aluminium alloys. The DPSSL, which delivers 150μJ pulses of high beam quality at more than 7KHz repetition rate, provides irradiance on the target that is appropriate for LIBS measurements. The experimental results indicate that alloy classification and quantitative analysis are possible on scrap aluminium samples placed 50 cm apart from the focusing and collecting lenses, without sample preparation. Similar calibration curves and limits of detection are obtained for traditional high-energy low-frequency flashlamp-pumped and low-energy high-frequency diode-pumped lasers, showing the applicability of compact diode-pumped lasers for industrial LIBS applications.

Citation Download Citation

B. Noharet, C. Sterner, T. Irebo, J. Gurell, A. Bengtson, R. Vainik, H. Karlsson, and E. Illy "A compact LIBS system for industrial applications", Proc. SPIE 9369, Photonic Instrumentation Engineering II, 936904 (13 March 2015); https://doi.org/10.1117/12.2075336

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