结构调控研制新蓝绿光激光自倍频晶体

项目名称： 结构调控研制新蓝绿光激光自倍频晶体

项目编号： No.61275177

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 林州斌

作者单位： 中国科学院福建物质结构研究所

项目金额： 80万元

中文摘要： 全固态蓝绿光激光器由于体积小、易调整、稳定性高，获得了广泛的应用。采用自倍频技术获得蓝绿光有独特优势，其核心是自倍频晶体，但目前尚无理想的成熟产品。采用结构调控方法，在Nd:YCa9(VO4)7中加入Nb离子，增加基团微观二级极化率，在保持其各种良好物化性能的同时，有望大幅提高其倍频系数，获得一种新的自倍频晶体Nd:YCa9(V1-xNbxO4)7。研究其结构和非线性性能关系，获得机理，为相关晶体的研制提供指导。采取液相合成原料、独特的炉体温场设计、分阶段控制生长气氛、多阶段退火、在熔体中加入微量变价氧化物等创新性方法，使用提拉法生长出光学质量优异、大尺寸的Nd:YCa9(V1-xNbxO4)7晶体。测定各种参数，进行激光实验，获得大于W级和毫W级的自倍频绿、蓝光输出，得到一种新的、实用的激光自倍频晶体。

中文关键词： 自倍频晶体；YCa9(V0.96Nb0.04O4)7 晶体；Nd3+离子掺杂；；

英文摘要： All solid state laser devices are compact, stable, high efficiency and with small volume, and they have large applications in many fields. Using the technique of self-frequency-doubling to obtain green and blue laser light has special advantage, in which the core is self-frequency-doubling (SFD) crystal. But, so far, there is no such mature product. Using the structure-controlled method, adding Nb ions into Nd:YCa9(VO4)7, to improve its second-order optical nonlinear coefficient，keeping its good physical and chemical characters in the same time，a new SFD crystal Nd3+:YCa9(V1-xNbxO4)7 will be acquired. By studying the relationships of the structure and the Second harmonic generation, the operating mechanism can be achieved, which will be useful in the research of the other SFD crystals. By using the innovative methods as follows: adopting liquid synthesis method to synthesize the growing raw material, designing special temperature field of the furnace, using different atmosphere in different growing period, annealing in special program, adding alterable oxide into the growing melt, a new bulk SFD crystal of Nd3+:YCa9(V1-xNbxO4)7 with big dimensions and good optical quality can be obtained. After measuring its parameters, the laser experiment will be carried out, the SFD green and blue laser with W and mW level

英文关键词： self-frequency-doubling crystal；YCa9(V0.96Nb0.04O4)7 crystal；Nd3+ ions doped；；