Laser-induced breakdown spectroscopy (LIBS)

Laser-induced breakdown spectroscopy (LIBS) is an atomic-emission spectroscopy technique that enables rapid chemical analysis of a wide range of materials ranging from metals, semiconductors, glasses, biological tissues, plastics, soils, thin-paint coating, and electronic materials.

The principles of LIBS

LIBS is very ppowerful analytical technique that helps determine the elemental composition of a wide range of samples. In principle it relies on focusing short and high energy laser pulses onto the surface of a target sample to generate a plasma of small amounts of ablated material. The extremely high temperatures within the plasma causes the ablated material to dissociate into excited atomic and ionic species.  Once the cooling process is completed, the characteristics of the sample  can be detected by a spectrograph.

LIBS has received substantially increased interest over recent years as a result of the development of more compact, even hand-held, systems that enables in-field use and construction of tools for on-line material analysis.

Laser performance in LIBS imaging

Within the realm of µ-LIBS (micro-LIBS) imaging, laser performance is pivotal for optimal results. This technique hinges on systematically scanning a sample with a focused laser beam, enabling the acquisition of a LIBS spectrum with each pulse or shot at various spatial positions across the sample surfa