Up-conversion Luminescence Properties of Nd3+/Yb3+ Doped YNbO4 Powder

被引：0

作者：

Ren X.-W. ^{[1
]}

Lyu Y. ^{[1
]}

Niu C.-H. ^{[1
]}

Lang X.-P. ^{[1
]}

机构：

[1] School of Instrument Science and Opto Electronics Engineering, Beijing Information Science & Technology University, Beijing

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2017年 / 38卷 / 04期

关键词：

Judd-Ofelt theory; Nd[!sup]3+[!/sup; Spectroscopic properties; Yb[!sup]3+[!/sup; YNbO[!sub]4[!/sub] powder;

D O I：

10.3788/fgxb20173804.0435

中图分类号：

学科分类号：

摘要：

Nd3+/Yb3+ doped YNbO4 powder sample was prepared with the molar ratios of 50Nb2O5-40Y2O3-2Nd2O3-8Yb2O3 by the high temperature solid state method at 1 300℃. The spectrum property was studied by using Judd-Ofelt theory. The spectral strength parameters Ωλ (λ=2, 4, 6) were computed based on the absorption peak's area of the absorption spectrum. The theoretical oscillator strength and the experimental oscillator strength were calculated according to the spectrum strength parameters, and the root mean square deviation (δrms) of them was 1.618×10-7. The parameters such as transition probability, decay branching ratios and level lifetime of Nd3+ transition 4F3/2→4IJ'(J'=15/2, 13/2, 11/2, 9/2) were obtained. The decay branching ratio of 4F3/2→4I11/2 (corresponding to the wavelength of 1 062 nm) is the most of 56.91%. The lifetime of metastable level 4F3/2 is longer of 1.435 2 ms, which is suitable for up-conversion intermediate level. Under the excitation of 980 nm diode laser, the up-conversion luminescence is observed at the wavelength of 487, 541 and 662 nm, corresponding to the radiative transitions of Nd3+: 2G9/2→4I9/2, 4G7/2→4I9/2 and 4G7/2→4I13/2, respectively. The two-photon absorption of three emission peaks is determined by the fitting curve graph of sample up-conversion emission power and the laser working current when the absorption of the photon number in turn is 2.06, 1.99 and 2.15. © 2017, Science Press. All right reserved.

引用

页码：435 / 441

页数：6

共 28 条

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