Optical spectroscopy of random deformations in elastically-anisotropic crystals containing rare-earth ions

被引：0
|
作者：
Malkin, B. Z. [1 ]
Baibekov, E. I. [1 ]
Abishev, N. M. [1 ]
Pytalev, D. S. [2 ]
Popova, M. N. [2 ]
Bettinelli, M. [3 ,4 ]
机构：
[1] Kazan Fed Univ, Kazan 420008, Russia
[2] RAS, Inst Spect, Troitsk 108840, Russia
[3] Univ Verona, Dipartimento Biotecnol, I-37134 Verona, Italy
[4] INSTM, I-37134 Verona, Italy
来源：
XXV-TH CONGRESS ON SPECTROSCOPY | 2017年 / 132卷
关键词：
D O I：
10.1051/epjconf/201713202016
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
We present the results of studies of spectral effects in the optical high-resolution (0.01 cm-1) spectra of rare-earth ions in crystals caused by random deformations of a crystal lattice. Low-temperature polarized transmission spectra in a broad spectral range (5000-15000 cm-1) were taken for tetragonal single crystals ABO4 (A=Y, Lu; B=V, P) containing impurity Tm3+ ions with concentrations 0.2 and 1.0 at.%. A specific fine structure of singlet-doublet transitions in the Tm3+ ions was observed. We demonstrate a possibility to estimate a concentration of intrinsic lattice defects from the analysis of the measurement data, by making use of an analytical expression derived in the present work for the distribution function of random lattice strains induced by point defects in the elastically-anisotropic continuum.
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