Er3+掺杂Na5Lu9F32单晶体的红外光学特性

采用坩埚下降法成功地生长了Er3+离子掺杂的Na5Lu9F32(NLF)单晶体。测定了单晶体在400～2 500 nm波段的吸收光谱与2.5～25 μm红外波段的透过光谱。Na5Lu9F32单晶体在400～7 150 nm宽波段范围具有好的光学透过性, 在该波段的透过率达到90%。在透过光谱中几乎观察不到2.7 μm中红外波段的吸收, 说明单晶体中OH-离子的含量极低。根据测定的吸收光谱, 通过Judd-Ofelt理论计算了Er3+在单晶体中的光学强度参数Ωt(Ω2=2.08,Ω4=2.07,Ω6=0.75), 以及相应的辐射跃迁速率、荧光分支比和荧光寿命。根据Futchbauer-Ladenburg公式估算了样品的发射截面大约分别为1.42×10-20 cm2(4I13/2→4I15/2)和1.66×10-20 cm2(4I11/2→4I13/2)。在980 nm半导体激光器(LD)激发下, 研究了单晶体的近红外1.5 μm与中红外2.7 μm的发射光谱特性。

Abstract

Er3+ doped Na5Lu9F32 single crystal was successfully grown by Bridgman method. The absorption spectra of the single crystal from 400 nm to 2 500 nm and the transmission characteristics from 2.5 μm to 25 μm were measured. Na5Lu9F32 single crystal possessed high optical transmittance from 400 nm to 7 150 nm wide band, and the transmittance reached to 90%. Almost no absorption of 2.7 μm band was observed. It indicated that the content of OH- ion was very low in the single crystal. The intensity parameters Ωt(Ω2=2.08, Ω4=2.07, Ω6=0.75) were calculated by using Judd-Ofelt theory based on the absorption spectrum. The radiative transition rates, branching ratios and radiative lifetimes were also obtained. The emission cross sections of the sample were 1.42×10-20 cm2(4I13/2→4I15/2) and 1.66×10-20 cm2(4I11/2→4I13/2) estimated by Futchbauer-Ladenburg formula. The emission spectra of 1.5 μm and 2.7 μm band were investigated under 980 nm LD.

参考文献

[1] ZHU D J, XUE L, LI G P, et al.. A highly sensitive near-infrared ratiometric fluorescent probe for detecting nitroreductase and cellular imaging［J］. Sens. Actuators B: Chem., 2016, 222:419-424.

[2] STOEPPLER G, PARISI D, TONELLI M, et al.. High-efficiency 1.9 μm Tm3+∶LiLuF4 thin-disk laser［J］. Opt. Lett., 2012, 37(7):1163-1165.

[3] WANG C, XIA H P, FENG Z G, et al.. Infrared spectral properties for α-NaYF4 single crystal of various Er3+ doping concentrations［J］. Opt. Laser Technol., 2016, 82:157-162.

[4] 姜永章,夏海平,张加忠,等. 单晶体α-NaYF4∶DY3+的制备及光谱特性［J］. 光子学报, 2015, 44(8):0816001.

JIANG Y Z, XIA H P, ZHANG J Z, et al.. Growth and optical spectra of DY3+ doped α-NaYF4 single crystal［J］. Acta Photon. Sinica, 2015, 44(8):0816001. (in Chinese)

[5] LI X B, GAI S L, LI C X, et al.. Monodisperse lanthanide fluoride nanocrystals: synthesis and luminescent properties［J］. Inorg. Chem., 2012, 51(7):3963-3971.

[6] 於杏燕,陈红兵,王苏静,等. Er3+∶LiYF4单晶生长与光谱特性［J］. 无机材料学报, 2011, 26(9):923-928.

YU X Y, CHEN H B, WANG S J, et al.. Growth and spectral properties of Er3+∶LiYF4 single crystal［J］. J. Inorg. Mater., 2011, 26(9):923-928. (in Chinese)

[7] THOMA R E, INSLEY H, HEBERT G M. The sodium fluoride-lanthanide trifluoride systems［J］. Inorg. Chem., 1966, 5(7):1222-1229.

[8] SHMYTKO I M, STRUKOVA G K. Fine sructure of Na5Lu9F32 nanocrystallites formed at the initial stages of crystallization［J］. Phys. Solid State, 2009, 51(9):1907-1911.

[9] YANG S, XIA H P, ZHANG J Z, et al.. Growth and spectral properties of Ho3+ doped α-NaYF4 single crystal［J］. Opt. Mater., 2015, 45:209-214.

[10] 秦忠雪,袁孝,熊宝星,等. 掺钕TeO2-Al2O3-Cs2O玻璃的Judd-Ofelt理论分析与光谱特性［J］. 光子学报, 2014, 43(6):616002-1-6.

QIN Z X, YUAN X, XIONG B X, et al.. Judd-Ofelt theory analysis and spectroscopic properties of Nd3+-doped TeO2-Al2O3-Cs2O tellurite glasses［J］. Acta Photon. Sinica, 2014, 43(6):616002-1-6. (in Chinese)

[11] YUAN F F, ZHAO W, SUN S J, et al.. Polarized spectroscopic properties of Er3+∶Ca9Y(VO4)7 crystal［J］. J. Lumin., 2014, 154:241-245.

[12] QIAN Y N, XIE Z X, WANG R, et al.. Efficient 1.54 μm laser property in near-stoichiometric Er∶LiNbO3 crystal［J］. Opt. Laser Technol., 2015, 74:173-177.

[13] GEORGESCU 瘙塁, 瘙塁TEFAN A, TOMA O. Judd-Ofelt and energy-transfer analysis of Er3+ doped in CaSc2O4 ceramic samples［J］. J. Lumin., 2015, 167:186-192.

[14] GHEORGHE C, GEORGESCU S, LUPEI V, et al.. Absorption intensities and emission cross section of Er3+ in Sc2O3 transparent ceramics［J］. J. Appl. Phys., 2008, 103(8):083116-1-5.

[15] HUANG L H, YAMASHITA T, JOSE R, et al.. Intense ultraviolet emission from Tb3+ and Yb3+ codoped glass ceramic containing CaF2 nanocrystals［J］. Appl. Phys. Lett., 2007, 90(13):131116-1-3.

[16] ZHANG F, BI Z F, CHEN J Y, et al.. Spectroscopic investigation of Er3+ in fluorotellurite glasses for 2.7 μm luminescence［J］. J. Alloys Compd., 2015, 649:1191-1196.

汤庆阳, 王成, 夏海平, 何仕楠, 江浩川, 陈宝玖. Er³⁺掺杂Na₅Lu₉F₃₂单晶体的红外光学特性[J]. 发光学报, 2016, 37(10): 1189. TANG Qing-yang, WANG Cheng, XIA Hai-ping, HE Shi-nan, JIANG Hao-chuan, CHEN Bao-jiu. Infrared Optical Properties of Er³⁺ Doped Na₅Lu₉F₃₂ Single Crystal[J]. Chinese Journal of Luminescence, 2016, 37(10): 1189.

Er³⁺掺杂Na₅Lu₉F₃₂单晶体的红外光学特性

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