The optical properties of Tm³⁺ doped Na₅Lu₉F₃₂ single crystal

Abstract

Tm³⁺ doped Na₅Lu₉F₃₂ single crystal with high optical quality was grown by an improved Bridgman method. The Judd-Ofelt intensity parameters Ω_t (t=2, 4, 6) were calculated according to the measured absorption spectra and physical-chemical properties of the obtained Na₅Lu₉F₃₂ single crystal. The stimulated emission cross-section of the ³F₄→³H₆ transition (~1.8 μm) is 0.35×10^-20 cm² for Tm³⁺ doped Na₅Lu₉F₃₂ single crystal. The emission spectra under the excitation of 790 nm laser diode (LD) and fluorescence lifetime at 1.8 μm were measured to reveal the fluorescence properties of Tm³⁺ doped Na₅Lu₉F₃₂ single crystal. The research results show that the Tm³⁺ doped Na₅Lu₉F₃₂ single crystal has larger stimulated emission cross-section compared with other crystals. All these spectral properties suggest that this kind of Tm³⁺doped Na₅Lu₉F₃₂ crystal with high physical-chemical stability and high-efficiency emission at 1.8 μm may be used as potential laser materials for optical devices.

References

[1] WangC, XiaH-p, FengZ-g, ZhangZ-x, JiangD-s, ZhangJ, ShengQ-g, TangQ-y, HeS-n, JiangH-c, ChenB-j. Optoelectronics Letters, 2016, 12: 56

[2] LiY F, QuY, SunY M, HouX Y, QiH J. Acta Photonica Sinica, 2007, 36: 591

[3] PanC, Feng-jingY, Zi-zhongZ, BoH, Li-boW, Ya-xunZ. Optoelectronics Letters, 2016, 12: 340

[4] GuoW, ChenY, LinY, GongX, LuoZ, HuangY. Journal of Physics D: Applied Physics, 2008, 41: 115409

[5] NC, GG, DP, MT, PL. Optics Letters, 2008, 33: 1951

[6] YanH, ChenX, SongH, WangX, ShiZ, LinQ. Materials Letters, 2017, 187: 101

[7] Jiang Dong-sheng, Jiang Yong-zhang, Xia Hai-ping, Zhang Jia-zhong, Yang Shuo, Gu Xue-mei, Jiang Hao-chuan and Chen Bao-jiu, Optoelectronics Letters 11, 356 (2015).

[8] Wu Lei, Zhang Hai-ming, Zhang Jing-Jing, Guo Cong, Ji Zi-ye and Bai Xiao-gang, Journal of Optoelectronics ·Laser 26, 2340 (2015). (in Chinese)

[9] ZhengJ, ChengY, WuZ-q, ZhouW-w, TangM-x. Journal of Optoelectronics·Laser, 2015, 26: 1924

[10] Shmyt’koI M, StrukovaG K. Physics of the Solid State, 2009, 51: 1907

[11] Sana J., Cases R. and Alcala R., Journal of Non-Crystalline Solids 93, 377 (1987).

[12] WangP, XiaH, PengJ, TangL, HuH. Journal of Optoeletronics·Laser, 2013, 24: 2143

[13] CornacchiaF, PalatellaL, ToencelliA. Journal of Physics and Chemistry of Solids, 2002, 63: 197

[14] ShuoY, HaipingX, Yongzhangj, JiazhongZ, YiwenS, XuemeiG, JianliZ, YuepinZ, HaochuanJ, BaojiuC. Journal of Alloys and Compounds, 2015, 643: 1

[15] JingX, HaiyanP, PengchaoH, YinH, LianhanZ. Journal of Physics D: Applied Physics, 2010, 43: 185