Thermal shifts and electron-phonon coupling parameters of the R-lines for Cr3+ ion in Y3Al5O12 crystal

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	Thermal shifts and electron-phonon coupling parameters of the R-lines for Cr3+ ion in Y3Al5O12 crystal
	W. C. Zheng; B. X. Li; G. Y. Feng
	2013
发表期刊	Optical Materials
ISSN	0925-3467
卷号	35 期号:3 页码:626-628
摘要	The thermal shifts of R-1- and R-2-lines of laser crystal Y3Al5O12 (YAG):Cr3+ are investigated by considering both the static contribution caused by lattice thermal expansion and the vibrational contribution due to electron-phonon interaction. The investigation is in terms of the analyses of pressure- and temperature-dependences of R-lines. The results show that (i) the new theoretical expression of thermal shift by including the above two contributions is almost the same as that containing only the vibrational contribution obtained in the previous papers when the parameter -alpha changes to A-alpha' (where alpha and alpha' are, respectively, the apparent and true electron-phonon coupling parameters and A is a parameter concerning the static contribution), and (ii) the static contribution to the thermal shifts of R-lines in sign is opposite to and in magnitude is about 20% of vibrational one. So the true electron-phonon coupling parameter alpha' increases by about 20% compared with the corresponding apparent one in YAG:Cr3+. It appears that to explain reasonably the thermal shift of spectral line and to obtain the true electron-phonon coupling parameter, the static contribution to the thermal shift should be taken into account. (c) 2012 Elsevier B.V. All rights reserved.
部门归属	[zheng, wen-chen] sichuan univ, dept mat sci, chengdu 610064, peoples r china. [zheng, wen-chen] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [li, bang-xing ; feng, guo-ying] sichuan univ, coll elect informat, chengdu 610064, peoples r china. ; zheng, wc (reprint author), sichuan univ, dept mat sci, chengdu 610064, peoples r china. ; zhengwc1@163.com
关键词	Thermal Shift Electron-phonon Coupling Parameter Luminescence Y3al5o12 Cr3++ Energy-levels Temperature-dependence Luminescence Pressure Nd3++ Yag
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71727
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. C. Zheng,B. X. Li,G. Y. Feng. Thermal shifts and electron-phonon coupling parameters of the R-lines for Cr3+ ion in Y3Al5O12 crystal[J]. Optical Materials,2013,35(3):626-628.
APA	W. C. Zheng,B. X. Li,&G. Y. Feng.(2013).Thermal shifts and electron-phonon coupling parameters of the R-lines for Cr3+ ion in Y3Al5O12 crystal.Optical Materials,35(3),626-628.
MLA	W. C. Zheng,et al."Thermal shifts and electron-phonon coupling parameters of the R-lines for Cr3+ ion in Y3Al5O12 crystal".Optical Materials 35.3(2013):626-628.