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Tm3+, Yb3+ co-doped CaWO4 polycrystals are synthesized via the high temperature solid state method. Under excitation of a 980 nm laser, the up-conversion fluorescences based on the transitions 1G4→3H6, 1G4→3H4, 3H2→3H6 and 3H3→3H6 in the visible light region are successfully obtained. The effect of the concentration change of Yb3+ on the luminous intensity of Tm3+ is discussed. Meanwhile, the temperature properties of the red up-conversion fluorescences centered at 689 nm and 705 nm are studied in a tem-perature range between 313 and 773 K according to the fluorescence intensity ratio method. It is found that the temperature can be monitored by detecting the red up-converion fluorescences of Tm3+, Yb3+ co-doped CaWO4 polycrystals. The maximal sensitivity of temperature measurement can be achieved to be 5.7×10-4 K-1 at 458 K.
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Keywords:
- up-conversion fluorescence /
- Tm3+ /
- CaWO4 /
- fluorescence intensity ratio
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[12] Yang Z M, Zhang Q Y, Liu Y H, Jiang Z H 2005 Acta Phys. Sin. 54 2013 (in Chinese) [杨中民, 张勤远, 刘粤慧, 姜中宏 2005 物理学报 54 2013]
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[14] Xu W, Zhang Z G, Cao W W 2010 Opt. Lett. 37 4867
[15] Xu W, Gao X Y, Zheng L J, Zhang Z G, Cao W W 2012 Sensors and Actuators B: Chemical 173 250
[16] Wade S A, Collins S F, Baxter G W 2003 Appl. Phys. 94 4744
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[1] Bao Y L, Zhao Z, Fu Y J 2010 Opt. Fiber Electr. Cable 13 3 (in Chinese) [包玉龙, 赵志, 傅永军 2010 光纤与电缆及其应用技术 13 3]
[2] Yang Z P, Du H Y, Sun J Y 2009 Spectra Scope and Spectral Analysis 29 29 (in Chinese) [杨志萍, 杜海燕, 孙家跃 2009光谱学与光谱分析 29 29]
[3] Xu W, Chen J M, Wang P 2007 Opt. Lett. 37 205
[4] Xiao S G, Yang X L, Ding J W 2009 Acta Phys. Sin. 58 6858 (in Chinese) [肖思国, 阳效良, 丁建文2009 物理学报 58 6858]
[5] Xu W, Li C R, Cao B S, Dong B 2010 Chin. Phys. B 19 127804
[6] Ye Y X, Hu X Y, Yan Z Y, Liu E Z, Fan J, Zhang D K, Miao H, Shang Y B, Yang J 2011 Chin. Phys. B 20 087803
[7] Li C R, Xu W, Dong B, Li S F, Ding J H, Cheng Y Q, Yin H T 2010 Chin. Phys. B 19 047801
[8] Li C R, Ming C G, Li S F 2008 Acta Phys. Sin. 57 6605 (in Chinese) [李成仁, 明成国, 李淑凤 2008 物理学报 57 6605]
[9] Zheng L J, Gao X Y, Xu W 2012 Chin. J. Luminesc. 9 945 (in Chinese) [郑龙江, 高晓阳, 徐伟 2012 发光学报 9 945]
[10] Ding Q L, Xiao S G, Zhang X H, Xia Y Q, Liu Z W 2006 Acta Phys. Sin. 55 5140 (in Chinese) [丁庆磊, 肖思国, 张向华, 夏艳琴, 刘政威 2006 物理学报 55 5140]
[11] Xu W, Zhang Z G, Cao W W 2012 Opt. Lett. 37 4865
[12] Yang Z M, Zhang Q Y, Liu Y H, Jiang Z H 2005 Acta Phys. Sin. 54 2013 (in Chinese) [杨中民, 张勤远, 刘粤慧, 姜中宏 2005 物理学报 54 2013]
[13] Lian X S, Sheng H, Liu Z M 1999 Spectra Scope and Spectral Analysis 24 23 (in Chinese) [连锡山, 盛慧, 刘占梅 1999 光谱学与光谱分析 24 23]
[14] Xu W, Zhang Z G, Cao W W 2010 Opt. Lett. 37 4867
[15] Xu W, Gao X Y, Zheng L J, Zhang Z G, Cao W W 2012 Sensors and Actuators B: Chemical 173 250
[16] Wade S A, Collins S F, Baxter G W 2003 Appl. Phys. 94 4744
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