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T. A. Labutin, V. N. Lednev, A. A. Ilyin and A. M. Popov, J. Anal. At. Spectrom., 2016, 31, 90 DOI: 10.1039/C5JA00301F

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c Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, Russia E-mail: kunashir@gmail.com

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a Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow, Russia E-mail: timurla@laser.chem.msu.ru

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b National University of Science and Technology “MISiS”, Leninskiy Prospect, 2, Moscow, Russia E-mail: vasilylednev@gmail.com

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The presented review summarizes nearly two decades of studies on femtosecond laser-induced breakdown spectrometry (fs-LIBS). When an ultra-short (<1 ps) laser pulse is used for ablation, the physics of laser-induced plasma changes dramatically in comparison with ablation by pico or nanosecond pulses. A femtosecond laser pulse interacts only with the electron subsystem, while nanosecond pulses continuously interact with different thermodynamic states of material, starting from solid through liquid into plasma. The properties of ultra-short laser radiation, the timescale of fs-laser ablation and the radiative properties of fs plasma are briefly described. We consider the advantages of fs-LIBS, namely, low ablation thresholds, high-spatial resolution, and rapid analysis of samples, which require minimal invasion and allow high-efficiency transportation of laser radiation in filamentation mode for remote analysis. Moreover, we discussed possible limitations of the technique and different approaches to overcome such constraints while retaining the unique possibilities of fs-LIBS.

d Institute of Automation and Control Processes of FEB RAS, Radio Street, 5, Vladivostok, Russia