Qualitative evaluation of Pb and Cu in fish using laser-induced breakdown spectroscopy with multipulse excitation by ultracompact laser source

2015 ◽  
Vol 54 (14) ◽  
pp. 4453 ◽  
Author(s):  
F. C. Alvira ◽  
T. Flores Reyes ◽  
L. Ponce Cabrera ◽  
L. Moreira Osorio ◽  
Z. Perez Baez ◽  
...  
Keyword(s):  
Qualitative Evaluation ◽  
Laser Source ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Compositional Analysis of Polychromes by Laser-Induced Breakdown Spectroscopy

2008 ◽  
Vol 587-588 ◽  
pp. 657-661 ◽  
Author(s):  
Ana J. López ◽  
Mari Paz Mateo ◽  
Ana Santaclara ◽  
Armando Yáñez
Keyword(s):  
Nd:Yag Laser ◽  
Compositional Analysis ◽  
Laser Source ◽  
Laser Induced Breakdown Spectroscopy ◽  
Depth Profiles ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

This study deals with the analysis and characterization of wood polychromes by means of Laser-Induced Breakdown Spectroscopy (LIBS). Specimens from a Baroque altarpiece have been analyzed by using a Q-switched Nd:YAG laser source at the wavelength of 355 nm. Previously, a library of characteristic LIBS spectra of the most commonly used pigments and other materials involved was obtained. The knowledge of these spectra allowed us to identify the main constituents of the different layers in polychromes and to obtain compositional depth profiles.

Nanosecond laser-induced breakdown assisted by femtosecond laser pre-ionization in air: the effect on spatial resolution and continuous radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20701
Author(s):  
Bo Li ◽  
Xiaofeng Li ◽  
Zhifeng Zhu ◽  
Qiang Gao
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Laser Induced Breakdown Spectroscopy ◽  
Nanosecond Laser ◽  
Breakdown Threshold ◽  
Powerful Technique ◽  
Breakdown Spectroscopy ◽  
Continuous Radiation ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy (LIBS) is a powerful technique for quantitative diagnostics of gases. The spatial resolution of LIBS, however, is limited by the volume of plasma. Here femtosecond-nanosecond dual-pulsed LIBS was demonstrated. Using this method, the breakdown threshold was reduced by 80%, and decay of continuous radiation was shortened. In addition, the volume of the plasma was shrunk by 85% and hence, the spatial resolution of LIBS was significantly improved.

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