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| Growth,Structure,and Spectroscopic Characteristics of the Nd^3＋：LiGd（WO4）2 Crystal | |
| 引用本文： | 黄新阳,王国富. Growth,Structure,and Spectroscopic Characteristics of the Nd^3＋：LiGd（WO4）2 Crystal[J]. 结构化学, 2011, 30(1): 85-96 |
| 作者姓名： | 黄新阳 王国富 |
| 作者单位： | Institute;Research;Functional;Matter;Jiangxi;University;Finance;Economy;Structure;Chinese;Academy;Sciences; |
| 基金项目： | Supported by the National Natural Science Foundation of China (No.60808033); Natural Science Foundation of Jiangxi Province (No.2008GZW0012) |
| 摘 要： | The Nd3+:LiGd(WO4) 2 crystal with dimensions of 25mm×28mm×16mm was grown by the top-seeded solution growth method from the 60 mol% Li2W2O7 flux. LiGd(WO4) 2 crystallizes in the tetragonal system with space group I41/a(C4h6) and cell parameters: a = 5.1986 and c = 11.2652 . The hardness is about 5.0 Mohs' scale. The specific heat is 0.40 J·g-1·K-1 at 50 oC. The thermal expansion coefficients for a-and c-axes are 1.314×10-5 and 2.052×10-5 K-1,respectively. The room-temperature polarized absorption and emission spectra and the fluorescence decay curve was measured. The parameters of oscillator strengths,the spontaneous transition probabilities,the fluorescence branching ratios,the radiative lifetimes,and the emission cross sections have been investigated based on Judd-Ofelt theory and Füchtbauer-Ladenburg method. The absorption cross-section is 5.19×10-20 cm2 at 805 nm for π-polarization and its line width is 15 nm;the emission cross section is 1.726×10-19 cm2 at 1060.5 nm for π-polarization. The fluorescence and radiative lifetimes are 86 and 158 μs,respectively. The fluorescence quantum efficiency is 54.43%. |
| 关 键 词： | 溶液生长法 光谱特征 Nd 晶体 荧光量子效率 结构 辐射寿命 发射截面 |
Growth, Structure, and Spectroscopic Characteristics of the Nd3+:LiGd(WO4)2 Crystal |
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| HUANG Xin-Yang,WANG Guo-Fu. Growth, Structure, and Spectroscopic Characteristics of the Nd3+:LiGd(WO4)2 Crystal[J]. Chinese Journal of Structural Chemistry, 2011, 30(1): 85-96 | |
| Authors: | HUANG Xin-Yang WANG Guo-Fu |
| Affiliation: | 1. Institute of Research on the Functional Matter, Jiangxi University of Finance and Economy, Nanchang, Jiangxi 330013, China 2. Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China |
| Abstract: | The Nd3+:LiGd(WO4)2 crystal with dimensions of 25mm × 28mm × 16mm was grown by the top-seeded solution growth method from the 60 mol% Li2W2O7 flux.LiGd(WO4)2 crystallizes in the tetragonal system with space group I41/a(C4h6)and cell parameters:a=5.1986 and c=11.2652 A.The hardness is about 5.0 Molls' scale.The specific heat is 0.40 J·g-1·K-1 at 50℃.The thermal expansion coefficients for a-and c-axes are 1.314 × 10-5 and 2.052 × 10-5 K-1,respectively.The room-temperature polarized absorption and emission spectra and the fluorescence decay curve was measured.The parameters of oscillator strengths,the spontaneous transition probabilities,the fluorescence branching ratios,the radiative lifetimes,and the emission cross sections have been investigated based on Judd-Ofelt theory and Füchtbauer-Ladenburg method.The absorption cross-section is 5.19 × 10-20 cm2 at 805 nm for x-polarization and its line width is 15 nm;the emission cross section is 1.726 × 10-19 cm2 at 1060.5 nm for g-polarization.The fluorescence and radiative lifetimes are 86 and 158 μs,respectively.The fluorescence quantum efficiency is 54.43%. |
| Keywords: | optical microscopy growth from melt Nd3 :LiGd(WO4)2 crystal solid state laser materials |
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