This article is cited in 1 paper

Materials of the International Seminar of the Institute of Spectroscopy of the Russian Academy of Sciences (ISAN), dedicated to the anniversary of Professor M.N. Popova
Spectroscopy of condensed state

Fluctuating fluorescence of single color centers in lithium fluoride crystals

V. P. Dresvyanskiy, S. A. Zilov, E. F. Martynovich

Irkutsk Branch of the Federal State Budgetary Institution of Science Institute of Laser Physics, Siberian Branch of the Russian Academy of Sciences, 664033 Irkutsk, Russia

Abstract: Single F$_2$- and F$_3^+$- 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 F$_3^+$- 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 F$_2$- 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.

Keywords: fluorescence, spectroscopy, single color center, confocal microscopy.

Received: 03.08.2021
Revised: 10.08.2021
Accepted: 17.08.2021

DOI: 10.21883/OS.2022.01.51901.34-21

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