FIELD: investigating or analyzing materials.
SUBSTANCE: device comprises housing provided with solid body laser connected with the window in the heat insulating tank filled with liquid nitrogen and provided with the precious stone, semiconductor laser connected with the window, two spectrometers for detecting luminescence in the range of 550-10000 nm, and processor for processing signals from the spectrometers.
EFFECT: reduced sizes and simplified method of testing.
47 cl, 9 dwg
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