| Résumé | Laser-Induced Breakdown Spectroscopy (LIBS) is a method of optical emission spectroscopy that uses laser-generated plasma as the source of vaporization, atomization and excitation. A bibliographic study around the LIBS literature shows clearly the number of application areas related to LIBS and laser based techniques is still growing. There is no doubt that LIBS has become a fascinating technology with great promise. The benefits include no sample preparation, no consumables, every sample, real-time analysis, standoff measurements, and more. LIBS provides ppm sensitivity for elemental analysis and even offers molecular characterization based on database libraries and chemometrics. In the last decade, there has been a significant technological developments in the components (lasers, spectrometers, detectors) used in LIBS instruments as well as emerging needs to perform real time measurements under conditions to which conventional techniques cannot be applied. This opens the door for many applications and possibilities of developing field-deployable instruments. Recently, fiber lasers have become one of the hottest topics in photonics. In this presentation, we will report their use for LIBS analysis and will discuss their advantages and inconvenient. Also, we will give an overview about LIBS applications for real time analysis, we will discuss the LIBS instrumentation in terms of robustness, analytical performance and portability in comparison to conventional techniques. In addition, we will present some approaches to improve the LIBS sensitivity developed in our laboratory and elsewhere, such as laser-induced fluorescence coupled to LIBS, resonance enhanced LIBS, resonant ablation, etc. |
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