Abstract

In this work, we develop a mercury-cadmium-telluride linear array detection system that is capable of rapidly capturing (15s) a broad spectrum of atomic and molecular laser-induced breakdown spectroscopy (LIBS) emissions in the long-wave infrared (LWIR) region (5.610μm). Similar to the conventional UV–Vis LIBS, a broadband emission spectrum of condensed phase samples covering the whole 5.6–10 μm region can be acquired from just a single laser-induced microplasma or averaging a few single laser-induced microplasmas. Atomic and molecular signature emission spectra of solid inorganic and organic tablets and thin liquid films deposited on a rough asphalt surface are observed. This setup is capable of rapidly probing samples “as is” without the need of elaborate sample preparation and also offers the possibility of a simultaneous UV–Vis and LWIR LIBS measurement.

© 2015 Optical Society of America

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