Journal
CHEMICAL PHYSICS LETTERS
Volume 652, Issue -, Pages 68-72Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2016.04.025
Keywords
Optical materials; Crystal growth; X-ray diffraction; Optical properties; Luminescence; Na5Lu9F32; Energy transfer
Funding
- National Natural Science Foundation of China [51472125, 51272109]
- K.C. Wong Magna Fund in Ningbo University
- Fundamental Research Funds for the Central Universities [3132014327]
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This work presents the luminescent properties of Ho3+/Tm3+ co-doped Na5Lu9F32 single crystals that were grown by an improved Bridgman method for the first time. The J-O intense parameters of Ho3+ ions were calculated. An intense 2.0 mu m emission was achieved with Tm3+ ions sensitizing Ho3+ ions by the processing of energy transfer from Tm3* ions to Ho3+ ions under excitation of 800 nm LD. The maximum emission intensity at 2.0 um is obtained, and the cross sections of Tm3+ ions and Ho3+ ions were calculated. The physical mechanism for energy transfer from Tm3+ to Ho3+ ions was analyzed by using Inokuti-Hirayama's model. (C) 2016 Elsevier B.V. All rights reserved.
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