Nd3+;LiBi(MoO4)2晶体的生长、热与光谱性能

doi:10.3724/SP.J.1077.2010.01307

无机材料学报 ›› 2010, Vol. 25 ›› Issue (12): 1307-1312.DOI: 10.3724/SP.J.1077.2010.01307

Nd³⁺;LiBi(MoO₄)₂晶体的生长、热与光谱性能

黄新阳

(江西财经大学功能材料研究所, 南昌 330013)

收稿日期:2010-04-02 修回日期:2010-06-02 出版日期:2010-12-20 网络出版日期:2010-11-24
基金资助:
国家自然科学基金(60808033); 江西省自然科学基金(2008GZW0012)

Growth, Thermal and Spectroscopic Characteristics of Nd³⁺;LiBi(MoO₄)₂ Crystal

HUANG Xin-Yang

(Institute of Research on the Functional Materials, Jiangxi University of Finance and Economy, Nanchang 330013, China)

Received:2010-04-02 Revised:2010-06-02 Published:2010-12-20 Online:2010-11-24
Supported by:
National Nature Science Foundation of China (60808033); Nature Science Foundation of JiangXi Province(2008GZW0012)

摘要/Abstract

摘要： 研究了Nd³⁺:LiBi(MoO₄)₂晶体的生长、热学与光谱性能. 用提拉法生长出尺寸为直径15mm × 25mm Nd³⁺:LiBi(MoO₄)₂晶体. 在330K时该晶体的比热容为0.32 J/(g·K). 热膨胀实验结果显示该晶体沿c和a轴方向的热膨胀系数分别为2.767×10^-5/K和1.521×10^-5/K. 在806 nm附近σ-和π-偏振谱带的最大吸收截面分别为5.04×10^-20 cm²和8.35×10^-20 cm², 半高宽为15 nm. σ-偏振1062nm和π-偏振1068 nm处的发射截面分别为1.325×10^-19 cm² 和1.937×10^-19 cm².应用Judd-Ofelt理论, 获得了一些光谱参数. 振子强度参数为Ω₂ = 25.40×10^-20 cm², Ω₄ = 7.79×10^-20 cm², Ω₆ = 6.37×10-20 cm2. 测量获得的荧光寿命和计算辐射寿命分别为128 ms 和198 ms. 量子效率为64.64%.

关键词: Nd³⁺;LiBi (MoO₄)₂晶体, 提拉法, 热性能, 光谱

Abstract: The crystal growth, thermal and polarized spectroscopic characteristics of Nd³⁺:LiBi(MoO₄)₂ crystal were investigated. The Nd³⁺:LiBi(MoO₄)₂crystal up to 15mm×25 mm was grown by Czochralski technique. The specific heat is 0.32 J/(g·K) at 330K. The thermal expansion coefficients for c and a axes are 2.767×10^-5/K and 1.521×10^-5/K, respectively. The absorption cross sections are 5.04×10^-20 cm² and 8.35×10^-20 cm² at around 806 nm with the FWHM of 15 nm for σ-polarization and π-polarization, respectively. The emission cross sections are 1.325×10^-19cm² at 1062nm for σ-polarization and 1.937×10^-19cm² at 1068 nm for π-polarization. Based on Judd-Ofelt theory, some spectral parameters of Nd³⁺:LiBi(MoO₄)₂crystal are obtained. The parameters of oscillator strengths Ωλ are: Ω₂ = 25.40×10^-20 cm², Ω₄ = 7.79×10^-20 cm², Ω₆ = 6.37×10^-20 cm². The radiative and fluorescence lifetimes are 198 ms and 128 ms, respectively. The quantum efficiency h is 64.64%.

Key words: Nd³⁺;LiBi (MoO₄)₂ crystal, pulling method, thermal characteristics, spectroscopy

中图分类号:

TN244

黄新阳. Nd³⁺;LiBi(MoO₄)₂晶体的生长、热与光谱性能[J]. 无机材料学报, 2010, 25(12): 1307-1312.

HUANG Xin-Yang. Growth, Thermal and Spectroscopic Characteristics of Nd³⁺;LiBi(MoO₄)₂ Crystal[J]. Journal of Inorganic Materials, 2010, 25(12): 1307-1312.

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Nd³⁺;LiBi(MoO₄)₂晶体的生长、热与光谱性能

Growth, Thermal and Spectroscopic Characteristics of Nd³⁺;LiBi(MoO₄)₂ Crystal

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