标题：Homogeneous and inhomogeneous spectrum broadening in Nd3(+) -doped mixed vanadate crystals
作者：Zhao, Yongguang; Yu, Haohai; Wang, Zhengping; Zhang, Huaijin; Xu, Xinguang; Wang, Jiyang
通讯作者：Yu, HH;Yu, HH
作者机构：[Zhao, Yongguang] Jiangsu Normal Univ, Sch Phys & Elect Engn, Jiangsu Key Lab Adv Laser Mat & Devices, Xuzhou 221116, Peoples R China.; [Zhao, Yongg 更多
会议名称：11th Laser Ceramics Symposium (LCS) / International Symposium on Transparent Ceramics for Photonic Applications
会议日期：NOV 30-DEC 04, 2015
关键词：Inhomogeneous spectrum broadening; Mixed crystals; Spectroscopic; properties
摘要：Homogeneous and inhomogeneous spectrum broadening in Nd:LuxGd(1-x)VO(4) series crystals were directly measured for the first time, and compared with that in the Nd:LuxY1-xVO4 and Nd:GdxY1-xVO4 crystals. Spectroscopic properties including fluorescence lifetime, spectral line width, emission peak, and stimulated emission cross section had obvious changes with the temperature increased from 77 K to 300 K, owing to the thermal phonon vibration. Compared to the pure vanadate crystals, we found these changes were more sensitive to temperature in the case of mixed crystals, in which cations (Lu, Y, and Gd) are random replaced by each other at the same lattice site. At 77 K, the thermal phonon vibration effect can be ignored and the inhomogeneous spectrum broadening that caused by disordered structure in all samplers can be calculated with the line-width of pure vanadate crystals as reference point, the corresponding values (Delta Gamma((T))) were 2.2 nm-3.8 nm in F-4(3/2) -> I-4(11/2) transition and 1.7 nm-2.8 nm in F-4(3/2) -> I-4(13/2) transition. Compared to Nd:LuxY1-xVO4 and Nd:GdxY1-xVO4,,VO4 series mixed crystals, the change in spectral line width with xis most obvious in the case of Nd:LuxGd1-xVO4 series crystals, which may be attributed to the larger ionic radius difference between Gd and Lu (R-Lu < R-Y < R-Gd). (C) 2016 Elsevier B.V. All rights reserved.