新型电光材料调制性能研究进展  

Research progress on the modulation properties of new electro-optic materials

作　　者：吕潇磊 赵继广 杜小平 宋一铄 张朋 张建伟 Lü Xiao-lei;ZHAO Ji-guang;DU Xiao-ping;SONG Yi-shuo;ZHANG Peng;ZHANG Jian-wei(Department of Electronic Optical Engineering,Space Engineering University,Beijing 101416,China)

机构地区：[1]航天工程大学电子与光学工程系,北京101416

出　　处：《中国光学》2021年第3期503-515,共13页Chinese Optics

基　　金：国家自然科学基金项目(No.61805284)。

摘　　要：基于电光晶体的偏振调制技术在激光三维成像领域起着越来越重要的作用。受限于铌酸锂(LN)材料的低视场和高半波电压,采用传统电光调制技术难以进一步提升三维成像性能。随着钙钛矿结构电光材料制备工艺的日趋成熟,基于新型材料的电光调制技术将成为突破激光三维成像探测精度的最佳手段,铌镁酸铅-钛酸铅(PMNT)、锆钛酸镧铅(PLZT)和钽铌酸钾(KTN)3种典型材料具有优良的电光性能和介电性质;能够突破视场和半波电压的限制,但应用到电光调制领域时存在PMNT调制带宽较低、PLZT透过性能较差、KTN实际应用带宽较低等难题。未来的研究将着眼于将该调制技术的实用性,一方面通过掺杂改性等手段提升电光调制性能,另一方面通过建立性能表征模型优化系统的信噪比。Polarization modulation technology based on electro-optic crystals is playing an increasingly important role in the field of three-dimensional laser imaging.Due to the low field of view and high half-wave voltage of LiNiO3(LN)materials,it is difficult for traditional electro-optic modulation technology to further improve 3D imaging performance.As the preparation technology of perovskite-structured electro-optical materials becomes more mature,electro-optic modulation technology based on new materials will become an excellent means to create a breakthrough in the detection accuracy of laser 3D imaging.PMNT,PLZT and KTaxNb1-xO3(KTN)three typical materials have excellent electro-optical properties and dielectric properties that might surpass the field of view and half-wave voltage limitation.However,their applications in electrooptic modulation has lead to difficulties such as a low modulation bandwidth for PMNT,poor transmission performance for PLZT,and low practical application bandwidth for KTN.Future research will focus on the practicality of this modulation technology.The electro-optic modulation performance can be improved by doping and the signal-to-noise ratio of the system can be optimized by establishing performance characterization models.

关 键 词：激光三维成像 钙钛矿结构材料 偏振调制 

分 类 号：TN384[电子电信—物理电子学]