首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
掺钕氟化钇锂多晶料的合成与晶体生长
作者:郑东阳1 2 方旭光1 崔亚军1 李春1 曾繁明1 林海1 刘景和1 
单位:1.长春理工大学 光电功能材料教育部工程研究中心 长春130022  
关键词:掺钕氟化钇锂 多晶料 干法 晶体生长 
分类号:O782
出版年,卷(期):页码:2014,42(6):756-760
DOI:10.7521/j.issn.0454-5648.2014.06.13
摘要:

采用干法(稀土氧化物与无水HF气体高温反应)合成Nd∶LiYF4(Nd∶YLF)多晶料。通过X射线衍射仪对多晶料的物相结构进行表征,确定了多晶料合成最佳工艺参数。发现稀土氟化物原料中氧化物杂质的存在对生长晶体有很大影响,直接采用未经处理的氟化物原料生长晶体,会在晶体表面出现白色包裹物。因此,在HF气氛下,经1200℃热处理才能去除残留在氟化物原料中的氧化物杂质,保证生长晶体的质量。实验确定了生长YLF晶体的最佳组分配比是LiF与YF3的摩尔比为53∶47。以最佳组分配比,采用提拉法生长了Nd∶YLF晶体。结果表明:以最佳组分配比生长的Nd∶YLF晶体具有高的纯度和光学性能;在808nm二极管激光器泵浦下,位于1047和1053nm处的发射峰(4F3/2→4I11/2)均有较强的荧光发射。

redirect i dreamed my wife cheated on me unfaithful husband
how to catch a cheater redirect go
printable coupons for cialis outbackuav.com coupon for free cialis
doxycycline doxycycline doxycycline

Nd∶LiYF4(Nd∶YLF) polycrystalline raw materials were synthesized via high-temperature reactions between the rare earth oxides and anhydrous HF gas. The phase structure and the synthesis parameters of polycrystalline materials were analyized by X-ray diffraction. It is found that the existence of oxide impurities in rare earth fluoride as raw material has a great influence on the growth of crystals. The crystals grown with untreated fluoride raw material appear white inclusions on the crystal surface. The residual oxide impurities in the fluoride raw material can be removed after heat treatment at 1 200℃ in HF atmosphere, which can guarantee the quality of the growth crystal. The optimal component proportion of YLF crystal growth can be obtained at the LiF to YF3 mole ratio of 53∶47. The Nd∶YLF crystal was grown via the Czochralski method at the optimal component proportion. The results indicate that the Nd∶YLF crystal has a high purity and superior optical properties. The main emission peaks of Nd∶YLF crystal pumped under 808nm diode laser is located at 908 nm (4F3/2→4I9/2), 1047 and 1053 nm (4F3/2→4I11/2), and 1321 and 1313 nm (4F3/2→4I13/2), respectively.

My wife cheated on me women cheat because reasons married men cheat
doxycycline doxycycline doxycycline
基金项目:
吉林省科技发展计划(20110803)资助项目。
作者简介:
第一作者:郑东阳(1973—),男,博士研究生。 通信作者:曾繁明(1976—),男,博士,教授,博士研究生导师。
cialis coupon cialis coupon cialis coupon
参考文献:

[1] OKADA F, TOGAWA S, OHTA K, et al. Solid-state ultraviolet tunable laser:A Ce3+ doped LiYF4 crystal[J]. J Appl Phys, 1994, 75(1): 49-53.
[2] KOLLIA Z, SARANTOPOULOU E, CEFALAS A C, et al. On the 4f25d→4f3 interconfigurational transitions of Nd3+ ions in K2YF5 and LiYF4 crystal hosts[J]. Opt Commun, 1998, 149(4/6): 386-392.
[3] BREDE R, DANGER T, HEUMANN E, et al. Room-temperature green laser emission of Er∶LiYF4[J]. Appl Phys Lett, 1993, 63(6): 729-730.
[4] DAVYDOVA M P, ZDANOVICH S B, KAZAKOV B N, et al. Stark structure of the spectrum of the Dy3+ ion in a LiYF4 crystal[J]. Opt Spectrosc, 1977, 42: 327-328.
[5] 那木吉拉图,袁兵,阮永丰,等.稀土离子在LiYF4晶体中的有效分凝系数[J].硅酸盐学报,2001, 29(6): 584-586.
NAMUJILATU, YUAN Bing, RUAN Yongfeng, et al. J Chin Ceram Soc, 2001, 29(6): 584-586.
[6] DELEEBEECK H, GORLLER-W C. Spectroscopic and magnetic properties of Nd3+ in LiYF4[J]. J Alloy Compd, 1995, 225(1): 75-79.
[7] SUN Y, ZHANG H, LIN Q, et al. High pulse repetition frequ-ency all-solid-state 1053nm Nd∶YLF laser[J]. Laser Phys Lett, 2010, 7(10): 722-725.
[8] MAGIN V, CERULLO G, SILVESTRI D S, et al. Intracavity frequency doubling of a cw high-power TEM00 Nd∶YLF laser[J]. Opt Lett, 1993, 24(18): 2111-2113.
[9] 韦辉,张生佳,许世忠,等.LDA抽运Nd∶YLF再生放大器的实验研究[J].中国激光,2003, 30(8): 677-680.
WEI Hui, ZHANG Shengjia, XU Shizhong, et al. Chin J Lasers(in Chinese), 2003, 30(8): 677-680.
[10] PENG X Y, XU L, ASUNDI A. High-power efficientcontinuous-wave TEM_00 intracavity frequency-doubled diode-pumped Nd∶YLF laser[J]. Appl Opt, 2005, 44(5):800-807.
[11] COLUCELLI N, GAMBETTA A, GATTI D, et al. 1.6-W self-referenced frequency comb at 2.06μm using a Ho∶YLF multipass amplifier[J]. Opt Lett, 2011, 36 (12): 2299-2301.
[12] BALDOCHI S L, SILVA F R, DE MORAES J R, et al. Synthesis and growth of materials for solid state lasers: Nd∶YLF and Nd∶LLW single crystal fibers[J]. J Cryst Growth, 2010, 317 (1): 4-7.
[13] ZEHETNER J. Highly efficient diode-pumped elliptical mode Nd∶YLF laser[J]. Opt Commun, 1995, 117(3): 273-276.
[14] MALCOLM G P A, FERGUSON A I. Self-mode locking of a diode-pumped Nd∶YLF laser[J]. Opt Lett, 1991, 16(24): 1967-1969.
[15] 刘永林,云月厚.LiF-YF3熔盐萃取提纯金属钇的研究 [J].中国稀土,2010, 31(1): 93-94.
LIU Yonglin,YUN Yuehou. Chin Rare Earths(in Chinese), 2010, 31(1): 93-94.
 

how to cheat signs of a cheater wife cheat story
why women cheat on husbands online link
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com