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

doi:10.3724/SP.J.1077.2010.01307

Abstract

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

CLC Number:

TN244

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

References

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

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