Abstract:
Absorption spectra were recorded at 7.2–300 K at a LiF–O, OH crystal irradiated and UV. The coupling force (S) with the phonons of the lattice of an electron-vibrational transition with a zero-phonon line of 436.55 nm was determined from the ratio of the intensities in the zero-phonon line and the integral absorption band. The nature of the color center responsible for the absorption band at 390 nm and emission 490 nm is determined from the value of S.
Keywords:
lithium fluorid with impurity oxygen, hydroxyl, optical properties: absorption, luminescence, color centers, zero-phonon line (ZPL).
The studies were partially supported by the Ministry of Education and Science of the Russian Federation (State task, project no. 3.8401.2017/8.9). Experimental results were obtained on the equipment of the Center for Collective Use “Isotope-geochemical studies” of the Institute of Chemical Chemistry of the Siberian Branch of the Russian Academy of Sciences and the Baikal Center for Nanotechnology of the Irkutsk National Research Technical University.
Citation:
L. I. Shchepina, R. Y. Shendrik, T. S. Lazareva, “Electron-phonon interaction of color centers with ZPL 436.55 nm in LiF–O, OH crystals”, Optics and Spectroscopy, 128:5 (2020), 623–626; Optics and Spectroscopy, 128:5 (2020), 616–619
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