锌离子注入铌酸锂晶体的光谱特性  

Spectral properties of Zn ion implantation in LiNbO_3 crystal

作　　者：郑丽杰[1] 苏红[1] 张传义[1] 李可尧 

机构地区：[1]深圳市激光工程重点实验室,深圳大学电子科学与技术学院,广东深圳518060

出　　处：《激光与红外》2015年第2期166-170,共5页Laser & Infrared

基　　金：国家自然科学基金项目(No.61078018);教育部高校博士点专项科研基金项目(No.20104408120002)资助

摘　　要：利用离子注入技术和氧气氛围高温退火制备了不同掺锌剂量的铌酸锂样品,并研究了锌离子浓度以及退火状态对铌酸锂晶体紫外和红外波段特性的影响。紫外波段,锌离子的注入使铌酸锂晶体的吸收边红移,退火后吸收边均与纯铌酸锂晶体的相同,锌离子的注入降低了铌酸锂晶体的透射率;红外波段,纯铌酸锂晶体分别在3486 cm-1、2851 cm-1和2917 cm-1处出现主次吸收峰,掺锌样品的主吸收峰位置与纯铌酸锂晶体相比发生微小的红移,X切向铌酸锂样品有明显的次吸收峰,而退火前Z切向铌酸锂样品的次吸收峰不明显,退火后吸收峰变锐利。锌离子的注入以及退火状态对铌酸锂晶体的透射率有影响,分别增强和减弱X切向和Z切向铌酸锂晶体的透射率。The ion implantation and annealing at high temperature in oxygen atmosphere was used to prepare LiNbO3 samples with different Zn2 ＋implantation concentrations. The effects of different Zn2 ＋implantation concentrations and annealing state on the ultraviolet and infrared properties of LiNbO3 crystal were studied. In ultraviolet wave band,experiment results show that Zn2 ＋implantation makes LiNbO3 absorption band edge shift to longer wavelength,and annealed samples have the same absorption band edge with pure LiNbO3 crystal. Zn2 ＋implantation reduces transmittance of LiNbO3 crystal. In infrared wave band,the pure LiNbO3 crystal appears the primary and secondary peaks in3486cm- 1,2851cm- 1,2917cm- 1,respectively. And compared with pure LiNbO3 crystal,the positions of the primary absorption peaks for Zn implantation samples occur slightly red shift. The secondary absorption peaks for X-cut LiNbO3 crystal are obvious. The secondary absorption peaks for Z-cut LiNbO3 crystal are not obvious before annealing,but become sharp after high temperature annealing. Zn2 ＋implantation enhances the transmittance of X-cut LiNbO3 crystal,but reduces the transmittance of Z-cut LiNbO3 crystal.

关 键 词：铌酸锂晶体 锌离子注入 紫外光谱 红外光谱 吸收系数 吸收边 

分 类 号：TN211[电子电信—物理电子学]