Spectroscopic and crystal field studies of (Ce,Gd)SC3 (BO3)4:Cr3+ crystals

被引：8
作者：
Brik, M. G.
Lebedev, V. A.
Stroganova, E. V.
机构：
[1] Kyoto Univ, Fukui Inst Fundamental Chem, Sakyo Ku, Kyoto 606, Japan
[2] Kuban State Univ, Expt Phys Dept, Krasnodar 350040, Russia
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2007年 / 68卷 / 09期
基金：
俄罗斯基础研究基金会;
关键词：
optical materials; crystal fields; optical properties; CR3+-DOPED LASC3(BO3)(4); LASER PERFORMANCE; CHROMIUM; IONS;
D O I：
10.1016/j.jpcs.2007.05.002
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Complex spectroscopic studies of (Ce,Gd)Sc-3(BO3)(4):Cr3+ (CSB:Cr3+) crystals (crystal growth, absorption and luminescence spectroscopy, crystal field calculations, analysis of the radiative and non-radiative decays) are presented. The main results of the paper include calculations of crystal field parameters and energy level scheme for Cr3+ at distorted octahedral Sc3+ sites, evaluation of the Huang-Rhys factor, effective phonon frequency, zero-phonon line energy, and parameters of radiative and non-radiative decays. Comparison with experimental results and other literature data is discussed. A very unusual value of the frequency factor (related to the non-radiative processes) is explained as being due to heterodesmic nature of chemical bonds in the CSB crystal. Cr3+-doped CSB crystals (with Cr3+ concentration 5.1 x 10(19)cm(-3) or 1%) are suggested as promising candidates for potential applications as active media for solid state lasers. (c) 2007 Elsevier Ltd. All rights reserved.
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页码：1796 / 1804
页数：9
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