Crystal growth, polarized spectroscopy and Judd-Ofelt analysis of Tb:YAlO3

Bin Liu; Jiaojiao Shi; Qingguo Wang; Huili Tang; Junfang Liu; Hengyu Zhao; Dongzhen Li; Jian Liu; Xiaodong Xu; Zhanshan Wang; Jun Xu

doi:10.1016/j.saa.2018.04.006

Crystal growth, polarized spectroscopy and Judd-Ofelt analysis of Tb:YAlO₃

Spectrochim Acta A Mol Biomol Spectrosc. 2018 Jul 5:200:58-62. doi: 10.1016/j.saa.2018.04.006. Epub 2018 Apr 6.

Authors

Bin Liu¹, Jiaojiao Shi¹, Qingguo Wang¹, Huili Tang², Junfang Liu³, Hengyu Zhao¹, Dongzhen Li⁴, Jian Liu⁵, Xiaodong Xu⁶, Zhanshan Wang¹, Jun Xu⁷

Affiliations

¹ School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, Shanghai 200092, China.
² School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, Shanghai 200092, China; State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
³ School of Materials Science and Engineering, Tongji University, Shanghai 200092, China.
⁴ Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.
⁵ Jiangsu Collaborative Innovation Center of Advanced Laser Technology and Emerging Industry, Jiangsu Normal University, Xuzhou 221116, China.
⁶ Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China. Electronic address: xdxu79@mail.sic.ac.cn.
⁷ School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, Shanghai 200092, China. Electronic address: xujun@mail.shcnc.ac.cn.

PMID: 29660683
DOI: 10.1016/j.saa.2018.04.006

Abstract

Tb³⁺-doped YAlO₃ (YAP) single crystal was grown by Czochralski (Cz) method. Based on the polarized absorption spectra, the spectroscopic parameters were calculated to be Ω₂=3.49×10^-20cm², Ω₄=5.87×10^-20cm² and Ω₆=2.55×10^-20cm², and then the spontaneous transition rate, fluorescent branching ratio and radiative lifetime of ⁵D₄ multiplet were obtained. The yellow emission cross sections of ⁵D₄→⁷F₄ transition were calculated to be 1.72×10^-22cm², 2.73×10^-22cm² and 2.65×10^-22cm² for a, b and c polarization, respectively. The fluorescence lifetime of the ⁵D₄ multiplet was fitted to be 1.72ms. All the data indicate that Tb:YAP crystal is a promising candidate for yellow laser operation.

Keywords: Czochralski method; Tb:YAlO(3); Visible laser.