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长春光学精密机械与... [16]

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限定条件	专题：长春光学精密机械与物理研究所第一署名单位第一作者单位通讯作者单位内容类型：会议论文

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	高亮度半导体激光器泵浦光纤耦合模块会议论文中国北京胡黎明; 朱洪波; 王立军收藏 \| 浏览/下载：8/0 \| 提交时间：2013/03/19 光纤激光器泵浦源光纤耦合模块高亮度半导体激光器
	Influence of high temperature annealing in nitrogen on upconversion luminescence of -NaYF4: Yb3+, Er3+ hexagonal sub-microplates (EI CONFERENCE) 会议论文 2012 International conference on Function Materials and Nanotechnology, FMN 2012, May 19, 2012 - May 20, 2012, Zhengzhou, China Zhao J.; Jia T.; Kong X. 收藏 \| 浏览/下载：15/0 \| 提交时间：2013/03/25 The pure -NaYF4: Yb3+ Er3+ hexagonal sub-microplates were successfully prepared by the combination of coprecipitation and hydrothermal methods using sodium citrate as chelator. The size of them is about 600 nm 400 nm (side length thickness). The obtained sample was divided into two parts and one of them was annealed in nitrogen at 300 C for 2 hours. The crystal structure of the -NaYF4: Yb3+ Er3+ hexagonal sub-microplates before and after annealing treatment is hexagonal phase. Under the excitation of 980 nm diode laser the upconversion luminescence intensity the sample after annealing is much stronger than that of the sample without annealing treatment. High temperature annealing process improved the crystallization of the sample resulting in the decrease of the nonradiative relaxation and the enhancement of the upconversion luminescence. (2012) Trans Tech Publications Switzerland.
	Influence of Sensitizer Concentration on the Upconversion Luminescence of NaYF4: Yb3+, Er3+ Nanoparticles 会议论文 2012 Zhao J. W.; Shi D. M.; Zhao Y. G.; Kong X. G. 收藏 \| 浏览/下载：9/0 \| 提交时间：2013/03/28
	Influence of sensitizer concentration on the upconversion luminescence of NaYF4: Yb3+, Er3+ nanoparticles (EI CONFERENCE) 会议论文 2012 2nd International Conference on Machinery, Materials Science and Engineering Applications, MMSE 2012, June 16, 2012 - June 17, 2012, Wuhan, China Zhao J.; Shi D.; Zhao Y.; Kong X. 收藏 \| 浏览/下载：14/0 \| 提交时间：2013/03/25 A series of NaYF4: Yb3+ Er3+ nanoparticles with different doping concentration were successfully prepared by the combination of coprecipitation and hydrothermal methods using sodium citrate as chelator. Upconversion luminescence can be observed in all of the samples at room temperature. Fixed the Er3+ concentration with 1 mol% unchanged the effect of the Yb3+ concentration on the upconversion luminescence of NaYF4: Yb3+ Er3+ samples were studied when the doped Yb3+ concentrations were 0 mol% 1 mol% 2 mol% 5 mol% 10 mol% and 20 mol% respectively. As increasing the Yb 3+ concentration the total intensity of the upconversion luminescence of the samples is increasing while the ratio of red to green emission increases firstly and then decreases. The maximum ratio value is 22.1 when the Yb3+ concentration is 10 mol%. It is found that the cross relaxation and cooperative sensitization effect are the reasons for the phenomenon above. (2012) Trans Tech Publications.
	Energy Transition between Yb(3+)-Tm(3+)-Gd(3+) in Gd(3+), Yb(3+) and Tm(3+) Co-doped Fluoride Nanocrystals 会议论文 2011 Zhang J. S.; Cao C. Y.; Lu S. Z.; Qin W. P. 收藏 \| 浏览/下载：19/0 \| 提交时间：2013/03/28
	Energy transition between Yb3+-Tm3+-Gd3+ in Gd3+, Yb3+ and Tm3+ Co-doped fluoride nanocrystals (EI CONFERENCE) 会议论文 17th International Conference on Dynamical Processes in Excited States of Solids, DPC'10, June 20, 2010 - June 25, 2010, Argonne, IL, United states Zhang J.; Cao C.; Lu S.; Qin W.-P. 收藏 \| 浏览/下载：15/0 \| 提交时间：2013/03/25 YF3: 20%Gd3+ 20%Yb3+ 0.5%Tm3+ nanocrystal has been synthesized by a hydrothermal method. The upconversion (UC) emission and energy transfer progresses between Gd3+-Yb 3+-Tm3+ under a 980-nm continuous wave semiconductor laser diode excitation have been explored. The experimental results show that the violet and ultraviolet (UV) enhancement with Tm3+ upconversion emission occurs in the nanocrystal and in the same time the UC emissions of Gd3+ from 6D9/2 6IJ 6P5/2 and 6P7/2 states to the ground state 8S7/2 are obtained too. The dynamic analysis implies that under 980-nm excitation the nanocrystal dimension plays a key role in the efficient energy transfer processes between Gd3+-Yb 3+-Tm3tt based on the energy matching conditions. 2011 Published by Elsevier B.V.
	Energy transfer processes on both Er+ ion concentration and excitation densities in Yb3+-Er3+ codoped LaF3 matrix (EI CONFERENCE) 会议论文 Zhang J.; Qin W.; Zhao D.; De G.; Zhang J.; Wang Y.; Cao C. 收藏 \| 浏览/下载：14/0 \| 提交时间：2013/03/25 The effects of both Er3+ ion concentration and excited density upon frequency upconversion fluorescence emissions in Er3+/Yb 3+-codoped LaF3 powder are investigated. The results reveal that a higher Er3+ concentration can induce not only upconversion emission enhancements but also the changes among the relative intensities of the 407 519 539 and 651 nm radiation transitions as the samples are excited within the ranges of 20 to 700 mW with 978 nm laser diode (LD) as an excitation source. The changes are described by a schematic level model with the cross-relaxation processes between Er3+ ions and a series of dynamic equations that take into account the population of temperature dependent in Er3+. 2006 Elsevier B.V. All rights reserved.
	Upconversion luminescence properties of Y2O3:Yb 3+, Er3+ nanostructures (EI CONFERENCE) 会议论文 De G.; Qin W.; Zhang J.; Zhang J.; Wang Y.; Cao C.; Cui Y. 收藏 \| 浏览/下载：15/0 \| 提交时间：2013/03/25 Cubic Y2O3 nanostructures doped with Yb3+ and Er3+ ions were synthesized by a facile hydrothermal method. Three distinct shapes such as nanotubes nanospheres and nanoflakes formed in the products by adjusting the pH value of reacting solution. Powder X-ray diffraction analyses indicate that all the three nanostructures are pure cubic phase while electron microscopy measurements confirm the formation of different morphologies. These nanostructures exhibit strong visible upconversion luminescence under the excitation of a 978-nm diode laser. In Yb3+- and Er3+- codoped Y2O3 nanocrystals the relative intensity of green emission became stronger as the size and morphology of sample changed from tubes to flakes. 2006 Elsevier B.V. All rights reserved.
	Numerical analysis and experimental research of output performance for Yb3+-doped double-clad fiber lasers (EI CONFERENCE) 会议论文 High-Power Lasers and Applications III, November 8, 2004 - November 11, 2004, Beijing, China Wang G.; Wang J.; Duanmu Q.; Li Y.; Gao Y.; Jiang D.; Wu K.; Tian J.; Fu L. 收藏 \| 浏览/下载：13/0 \| 提交时间：2013/03/25 In this paper numerical analysis was investigated for the double-clad fiber lasers and experimental study on the Yb3+-doped double-clad fiber lasers was performed. The results shown that the output power increased monotonically with absorbed power and in lossy cavity the output power is less than in the lossless cavity. The output power decreases for the lossy fiber with the reflectivity of output coupler. There was an optimum fiber length to reach a maximum output and the optimum length was mainly dependent on the loss coefficient. In experiment we obtained a output power of 21.6W slope efficiency of 54% by using Yb3+-doped double-clad fiber and 40W LD pump source.
	掺稀土氟氧透明玻璃陶瓷制备及在红外激光探测中的应用会议论文中国厦门曹望和; 黄得康; 牛春晖; 刘洪敏; 臧春雨收藏 \| 浏览/下载：40/0 \| 提交时间：2013/03/19 稀土玻璃陶瓷频率上转换红外探测

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