硅酸盐学报2011，Vol.39Issue(5)：868-873,6.
Tm3+和Ho3+共掺KYb(WO4)2晶体生长与光谱特性
Growth and Spectral Characteristic of Tm3+ and Ho3+ Co-doped KYb(WO4)2 Laser Crystal
摘要
Abstract
The potassium ytterbium tungstate [Tm, Ho:KYb(WO4)2, Tm, Ho:KYbW] crystal doped with 8％ (in mole, the same below)Tm3+ and 1％ Ho3+ was grown with K2W207 as a flux and Yb3+ as a sensitizer by the Kyropoulos method. The structure of the crystals was analyzed via the X-my diffractometer (XRD). The infrared and Raman spectra of the crystals were measured, and the assignation of the vibrations of peak value was discussed. The absorption and fluorescence spectra of the Tm, Ho:KYbW crystal was analyzed and the corresponding spectral parameters were calculated. The XRD results show that the grown crystal belongs to a monoclinic β-Tm, Ho:KYbW, space group C2/c. The absorption peaks of Yb3+ are located at 929, 962nm and 1 000nm and the full width half maximum (FWHM) of the peak is 103 nm in absorption spectra. The fluorescence emission peaks of the Tm, Ho:KYbW crystal are located at 2 048 and 1 626 nm, and the emission FWHM of the chief peak at 2 048 nm is 132 nm, leading to an excellent gain medium for tunable laser. The upconversion fluorescence spectrum of the crystals indicate that the upconversion blue light of 467 nm and near-infrared light of 782 nm can be obtained. There exists the Tm3+ and Ho3+ cross relaxation. In addition, the corresponding upcon-version mechanism is also analyzed.关键词
铥/钬/钨酸鐿钾晶体/泡生法/吸收光谱/荧光光谱/激光晶体Key words
thulium/ holmium/ potassium ytterbium tungstate crystal/ Kyropoulos method/ absorption spectrum/ fluorescence spectrum/ laser crystal分类
数理科学引用本文复制引用
朱忠丽,刘博林,曹立华,林海..Tm3+和Ho3+共掺KYb(WO4)2晶体生长与光谱特性[J].硅酸盐学报,2011,39(5):868-873,6.基金项目
吉林省科技发展计划(吉科20090526)资助项目. （吉科20090526）
