共查询到17条相似文献,搜索用时 906 毫秒
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快速生长大尺寸KDP单晶 总被引:3,自引:2,他引:1
WANG Bo 许心光 WANG Sheng-lai 孙洵 GU Qing-tian 李毅平 FANG Chang-shui 梁晓亮 FENG Yu 《人工晶体学报》2008,37(4):1042-1043
用传统降温法生长了大尺寸KDP单晶,生长速度一般在1~2 mm/d,周期长,风险大.本文采用"点籽晶"快速生长法多次成功生长出了200 mm级的大尺寸KDP单晶,晶体生长速度达到20 mm/d,晶体生长正常.同时,摇摆曲线表明快速生长的晶体有着很好的结构完整性. 相似文献
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Bing Teng Xiaobing Li Dongjuan Wang Degao Zhong Qingguo Wang Yanshuai Zhao Zhenghe Yu Shaou Chen 《Crystal Research and Technology》2009,44(6):647-651
The coniform bottom device was designed and used in the rapid growth process of KDP crystal. A seed support rack was also designed to be used in rapid growth of KDP crystal to avoid spontaneous nucleation on the interface of seed crystal and rack. The KDP crystals were fast grown at the growth rate of up to 25 mm/day. The optical scatter centers in KDP crystals were observed and their transmissions of different parts were measured. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
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Guohui Li Youping He Genbo Su Zhengdong Li Xinxin Zhuang Jinbo Ma Xiangjin Huang 《Crystal Research and Technology》2005,40(3):217-221
Large size crystals of KH2PO4 (KDP) were grown by adopting rapid growth technique from point seeds in a 1500‐liter crystallizer which is used to grow KDP crystals by conventional method. The grown KDP crystal size can reach to 310 × 310 × 320 mm3 and the average growth rate was 8mm/day. The optic properties of the rapidly grown KDP crystals were characterized comparing with the KDP crystals grown by the traditional temperature reduction method. We found it that the optical quality of the KDP crystals we grown rapidly are not significantly different from those of KDP crystals grown by traditional method. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
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Shengjun Zhu Shenglai Wang Jianxu Ding Guangxia Liu Xinguang Xu 《Crystal Research and Technology》2013,48(6):400-407
By altering the concentration of a new additive ‐ diethylene triamine pentacetate acid (DTPA) in the growth solution, a series of KDP crystals were obtained by the “point seed” rapid growth method. The growth rates up to about 20 mm/day. Effects of DTPA on the growth habit and optical properties of these as‐grown KDP crystals were investigated. The results reveal that, with the increase of DTPA concentration in growth solution, the contents of impurity metal ions incorporated into crystal and aspect ratio of crystal morphology were both decreased gradually, while the UV transmittance of crystal was enhanced continually. In the presence of moderate concentration of DTPA (100–200 ppm), the solution stability was increased and optical properties of crystal (including optical homogeneity, light scattering and laser damage threshold) were all improved. However excessive doping (>500 ppm) has opposite effects. The impact mechanism was also analyzed combining with the structure of KDP crystal and chemical characteristics of DTPA molecular. 相似文献
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KDP/DKDP晶体具有生长方法简单、成本较低、光学性能良好等优点,而可生长出的超大尺寸KDP/DKDP晶体是目前唯一可用于高功率激光工程的单晶材料。但是在晶体的生长过程中存在很多影响因素,同时对晶体进行后处理也会影响晶体的性能,这都直接关系到超大尺寸KDP/DKDP晶体的实际应用。鉴于此,本文综述了近些年超大尺寸KDP/DKDP晶体的重要研究进展, 特别是针对传统生长和快速生长中存在的问题和相应的解决对策以及晶体性能相关的研究,并重点对晶体的透过率、氘化率、激光诱导损伤等进行了分析和讨论。 相似文献
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