Tb:YAlO 的晶体生长、偏振光谱和 Judd-Ofelt 分析。

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

机构信息

School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, Shanghai 200092, China.

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.

出版信息

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

DOI:10.1016/j.saa.2018.04.006

PMID:29660683

Abstract

Tb-doped YAlO (YAP) single crystal was grown by Czochralski (Cz) method. Based on the polarized absorption spectra, the spectroscopic parameters were calculated to be Ω=3.49×10cm, Ω=5.87×10cm and Ω=2.55×10cm, and then the spontaneous transition rate, fluorescent branching ratio and radiative lifetime of D multiplet were obtained. The yellow emission cross sections of D→F transition were calculated to be 1.72×10cm, 2.73×10cm and 2.65×10cm for a, b and c polarization, respectively. The fluorescence lifetime of the D multiplet was fitted to be 1.72ms. All the data indicate that Tb:YAP crystal is a promising candidate for yellow laser operation.

摘要

掺铽钇铝石榴石（YAP）单晶通过提拉法（Cz 法）生长。基于偏振吸收光谱，计算了光谱参数为Ω=3.49×10cm、Ω=5.87×10cm 和 Ω=2.55×10cm，然后得到了 D 多重态的自发跃迁率、荧光分支比和辐射寿命。对于 a、b 和 c 偏振，计算得到 D→F 跃迁的黄发光截面分别为 1.72×10cm、2.73×10cm 和 2.65×10cm。D 多重态的荧光寿命拟合为 1.72ms。所有数据表明，Tb:YAP 晶体是一种很有前途的黄色激光工作物质。