Fluctuating Fluorescence of Single Color Centers in Lithium Fluoride Crystals.

Autor:	Dresvyanskiy, V. P., Zilov, S. A., Martynovich, E. F.
Předmět:	LITHIUM fluoride CONFOCAL fluorescence microscopy FLUORESCENCE ROTATIONAL diffusion CRYSTALS
Zdroj:	Optics & Spectroscopy; Jun2023, Vol. 131 Issue 6, p365-372, 8p
Abstrakt:	Single F2- and -color centers in the LiF crystal were studied by confocal fluorescence microscopy. The time dependences of their fluorescence intensity were analyzed and statistically processed. Our studies show that, the -color center, being photoexcited, is able enter the triplet state, while in ground (singlet) state it changes orientation with a frequency of 1.5–2 Hz at room temperature, due to reorientational diffusion, unlike the F2-center, which is reoriented only being in the triplet state. This subtype of rotational diffusion of the center does not lead to its translational diffusion. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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