ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Optical properties of Mg2+, Yb3+, and Ho3+ tri-doped LiNbO3 crystals |
Li Dai(代丽)1, Chun-Rui Liu(刘春蕊)1, Chao Tan(谭超)1, Zhe-Hua Yan(阎哲华)1, Yu-Heng Xu(徐玉恒)2 |
1 Applied Science College, Harbin University of Science and Technology, Harbin 150080, China; 2 Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China |
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Abstract A series of LiNbO3 crystals tri-doped with Mg2+, Yb3+, and Ho3+ are grown by the conventional Czochraski technique. The concentrations of Mg2+, Yb3+, and Ho3+ ions in Mg:Yb:Ho:LiNbO3 crystals are measured by using an inductively coupled plasma atomic emission spectrometry. The x-ray diffraction is proposed to determine the lattice constant and analyze the internal structure of the crystal. The light-induced scattering of Mg:Yb:Ho:LiNbO3 crystal is quantitatively described via the threshold effect of incident exposure energy flux. The exposure energy (Er) is calculated to discuss the optical damage resistance ability. The exposure energy of Mg(7 mol):Yb:Ho:LiNbO3 crystal is 709.17 J/cm2, approximately 425 times higher than that of the Mg(1 mol):Yb:Ho:LiNbO3 crystal in magnitude. The blue, red, and very intense green bands of Mg:Yb:Ho:LiNbO3 crystal are observed under the 980-nm laser excitation to evaluate the up-conversion emission properties. The dependence of the emission intensity on pumping power indicates that the up-conversion emission is a two-photon process. The up-conversion emission mechanism is discussed in detail. This study indicates that Mg:Yb:Ho:LiNbO3 crystal can be applied to the fabrication of new multifunctional photoluminescence devices.
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Received: 10 September 2016
Revised: 20 November 2016
Accepted manuscript online:
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PACS:
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42.70.-a
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(Optical materials)
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42.62.Fi
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(Laser spectroscopy)
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42.70.Hj
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(Laser materials)
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61.50.Ah
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(Theory of crystal structure, crystal symmetry; calculations and modeling)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 51301055), the Youth Science Fund of Heilongjiang Province, China (Grant No. QC2015061), the Special Funds of Harbin Innovation Talents in Science and Technology Research, China (Grant No. 2015RQQXJ045), and the Science Funds for the Young Innovative Talents of Harbin University of Science and Technology, China (Grant No. 201501). |
Corresponding Authors:
Li Dai
E-mail: daili198108@126.com
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Cite this article:
Li Dai(代丽), Chun-Rui Liu(刘春蕊), Chao Tan(谭超), Zhe-Hua Yan(阎哲华), Yu-Heng Xu(徐玉恒) Optical properties of Mg2+, Yb3+, and Ho3+ tri-doped LiNbO3 crystals 2017 Chin. Phys. B 26 044207
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