Tang Dingchen, Tian Ying, Dorosz Dominik, Wang Xu, Yang Xueying, Liu Yongyan, Zhang Xianghua, Zhang Junjie, Xu Shiqing
Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, People's Republic of China.
Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, People's Republic of China.
Spectrochim Acta A Mol Biomol Spectrosc. 2023 Jan 15;285:121833. doi: 10.1016/j.saa.2022.121833. Epub 2022 Sep 3.
In this paper, Ho/Yb co-doped chloride-modified fluorotellurite glasses with 2-3 μm mid-infrared luminescence are prepared. By measuring and investigating the transmission spectra and emission spectra, the prepared glasses show a high transmittance (91 %) and low maximum phonon energy (813 cm). Based on the measured absorption spectra, the Judd-Ofelt parameters and radiation characteristics were calculated in depth. In addition, with the assistance of phonons, the energy transfer between Ho/Yb ions further increases the mid-infrared fluorescence intensity. The calculated emission cross-section at 2.0 μm and 2.85 μm reach 16.47 × 10 cm and 7.8 × 10 cm, respectively. It is worth mentioning that the quantum efficiencies of Ho: I→I and I→I reach 51.47 % and 84.14 % respectively. The results having also in mind good thermal stability (ΔT = 102℃) and refractive index (n = 1.645) indicate that this glass has a promising application for the study of fiber lasers in the mid-infrared band.
本文制备了具有2 - 3μm中红外发光的Ho/Yb共掺杂氯化物改性氟碲酸盐玻璃。通过测量和研究其透射光谱和发射光谱，所制备的玻璃显示出高透过率（91%）和低最大声子能量（813cm）。基于测量的吸收光谱，深入计算了Judd-Ofelt参数和辐射特性。此外，在声子的辅助下，Ho/Yb离子之间的能量转移进一步提高了中红外荧光强度。在2.0μm和2.85μm处计算得到的发射截面分别达到16.47×10cm和7.8×10cm。值得一提的是，Ho：I→I和I→I的量子效率分别达到51.47%和84.14%。考虑到良好的热稳定性（ΔT = 102℃）和折射率（n = 1.645），结果表明这种玻璃在中红外波段光纤激光器研究方面具有广阔的应用前景。
