This article is cited in 1 paper

55th ANNIVERSARY OF THE INSTITUTE OF SPECTROSCOPY OF THE RUSSIAN ACADEMY OF SCIENCES (ISAN). REVIEWS OF TOPICAL PROBLEMS

High-resolution spectroscopy of functional dielectrics with rare-earth ions

M. N. Popova^a, M. Diab^ab, K. N. Boldyrev<sup>a

a</sup> Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow
^b Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region

Abstract: A brief review of recent studies of crystals doped with rare-earth ions performed at the Institute of Spectroscopy of the Russian Academy of Sciences (ISAN) using high-resolution wide-range optical Fourier spectroscopy is presented. The results of a study of inhomogeneous broadening and the fine structure of lines in the absorption and luminescence spectra of crystals with rare-earth ions caused by random deformations, the isotopic structure in luminescence spectra associated with matrix isotopes, and anticrossings of the crystal hyperfine levels in a magnetic field are discussed. It is shown that the hyperfine structure in luminescence spectra can be used to implement a luminescence thermometer for the region of ultra-low temperatures.

Keywords: spectra of crystals with rare-earth ions, deformation splittings, hyperfine structure, level anticrossings, photoluminescence, high-resolution Fourier spectroscopy, luminescence cryothermometer.

PACS: 71.70.-d, 78.20.Bh, 78.40.Ha, 78.55.Hx, 78.90.+t

Received: March 11, 2024
Revised: July 3, 2024
Accepted: July 11, 2024

DOI: 10.3367/UFNr.2024.07.039714

 English version: Physics–Uspekhi, 2024, 67:11, 1111–1118

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