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Crystal growth and optimization of Pr:CaGdAlO4 by the flux-Czochralski method
CrystEngComm ( IF 3.1 ) Pub Date : 2017-12-19 00:00:00 , DOI: 10.1039/c7ce02016c
Qiangqiang Hu 1, 2, 3, 4 , Zhitai Jia 1, 2, 3, 4 , Stefano Veronesi 5, 6, 7, 8 , Jian Zhang 1, 2, 3, 4 , Alberto Sottile 5, 6, 7, 8, 9 , Mauro Tonelli 5, 6, 7, 8, 9 , Enrico Cavalli 8, 10, 11 , Xutang Tao 1, 2, 3, 4
Affiliation  

Pr:CaGdAlO4 (Pr:CGA) crystals have been grown and investigated for the first time. A Na+ flux was designed to improve the crystal quality in the Czochralski growth process. The effect of the addition of the Na+ flux on crystal quality has been investigated, and its beneficial impact on the crystallinity, optical homogeneity and thermal properties of the grown crystals has been demonstrated. The optical spectra of Pr:CGA have been measured in order to assess its potential for photonics applications. The intensities of the absorption transitions have been analyzed by means of the Judd–Ofelt approach and the intensity parameters, the branching ratios and the radiative lifetimes of the emitting states have been evaluated. These have been compared with the experimental values obtained from pulsed light measurements. All the properties indicate that the Pr:CGA crystal has great prospects in the applications of visible lasers.

中文翻译:

通量-直拉法 生长Pr:CaGdAlO 4晶体及优化

Pr:CaGdAlO 4(Pr:CGA)晶体已得到首次生长和研究。设计Na +助熔剂以改善Czochralski生长过程中的晶体质量。Na +的添加效果已经研究了通量对晶体质量的影响,并且已经证明了通量对生长的晶体的结晶度,光学均质性和热性质的有益影响。已对Pr:CGA的光谱进行了测量,以评估其在光子学应用中的潜力。通过Judd-Ofelt方法分析了吸收跃迁的强度,并评估了强度参数,发射态的支化比和辐射寿命。这些已与从脉冲光测量获得的实验值进行了比较。所有性能表明,Pr:CGA晶体在可见光激光器的应用中具有广阔的前景。
更新日期:2017-12-19
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