Open AccessФлуктуирующая флуоресценция одиночных центров окраски в кристаллах фторида лития
Author(s) -
В.П. Дресвянский,
С.А. Зилов,
Е.Ф. Мартынович
Publication year - 2022
Publication title -
optika i spektroskopiâ
Language(s) - English
Resource type - Journals
eISSN - 2782-6694
pISSN - 0030-4034
DOI - 10.21883/os.2022.01.51901.34-21
Subject(s) - rotational diffusion , triplet state , diffusion , fluorescence , singlet state , center (category theory) , ground state , crystal (programming language) , materials science , chemistry , molecular physics , optics , atomic physics , anisotropy , physics , crystallography , excited state , programming language , computer science , thermodynamics
Single F2 and F3+- 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 F3+- 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.