Laser-induced fluorescence (LIF) or laser-stimulated fluorescence (LSF) is a spectroscopic method in which an atom or molecule is excited to a higher energy level by the absorption of laser light followed by spontaneous emission of light.
Fields of application
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Cultural heritage
archaeological object and site, architecture, art, decorative arts, film, mosaics, painting, sculpture, textile
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Natural heritage
fossil, mineral, shell, skeleton
Materials
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inorganic
ceramic (clay/mud brick/terracotta/earthenware/stoneware/porcelain), glass, stone, metal and metallurgical By-Products, pigment
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organic
binding media, glues, wood, paper, textiles, varnishes
TOOLS
The instrument is a laboratory compact hybrid Raman-LIF-LIBS system based on the excitation of the three types of spectroscopic signals with a Q-Switched Nd:YAG laser (LS-2147, Lotis II) operating at 532, 355 or 266 nm, at a repetition rate of 10 Hz and delivering pulses of 17 ns with Gaussian-like spatial profile. The linearly polarized...