人工晶体学报2025，Vol.54Issue(6)：935-941,7.DOI:10.16553/j.cnki.issn1000-985x.2025.0022
微下拉法Er∶CNGG晶体的生长及光谱性能研究
Growth and Spectral Properties of Er∶CNGG Crystals by the Micro-Pulling-Down Method
摘要
Abstract
Er∶CNGG crystals with the doping concentration(atomic fraction)of 0.3%,2.0%,3.0%and 5.0%were grown by the micro-pulling-down method.The crystal structure was tested by X-ray diffraction(XRD),and the results show that the crystal structure is cubic.The absorption spectra,fluorescence spectra and fluorescence decay curves of Er∶CNGG crystals were measured at room temperature.The absorption coefficient of 5.0%Er∶CNGG crystal is 1.70 cm-1 at 968 nm,with a full width at half maximum(FWHM)of 17.5 nm,which matches well with the commercial laser diode pumping sources.The strongest emission peak of 5.0%Er∶CNGG crystal is located at 2 709 nm with FWHM of 17.3 nm.The lifetime of 4I13/2 energy level of 0.3%,2.0%,3.0%and 5.0%Er∶CNGG crystals are 5.97,6.30,6.46 and 5.73 ms,respectively.The results show that Er∶CNGG crystal is a potential gain medium for laser at around 2.7 µm.关键词
Er∶CNGG/微下拉法/晶体生长/光谱性能/2.7µm/激光增益介质Key words
Er∶CNGG/micro-pulling-down method/crystal growth/spectral property/2.7 µm/gain medium for laser引用本文复制引用
陈子航,王晓丹,刘坚,刘鹏,徐晓东,徐军..微下拉法Er∶CNGG晶体的生长及光谱性能研究[J].人工晶体学报,2025,54(6):935-941,7.基金项目
国家重点研发计划(2023YFB3507404) （2023YFB3507404）
江苏省"十四五"光学工程重点学科项目(2021135) （2021135）
