基于钽铌酸钾二次电光效应的光束偏转原理、器件及应用

Principles,Devices,and Applications of Beam Deflection Based on Quadratic Electro-Optic Effect of Potassium Tantalate Niobate

钽铌酸钾(KTN)电光偏转器件具有角度大、电压低、无惯性和体积小等优点,近年来获得广泛关注。回顾了国内外KTN晶体器件及其应用的研究现状,阐述了基于该晶体空间电荷、组分梯度和温度梯度的电光偏转的基本原理,讨论了器件的特征参数和偏转性能的主要影响因素,介绍了几种基于KTN电光偏转的元器件及应用实例,总结了目前需要解决的问题及未来的发展趋势。

Potassium tantalate niobate(KTN)electro-optic deflection devices attract much attention in recent years due to the advantages of large angle,low voltage,no inertia,and small size.The research progress of KTN crystal devices and applications at home and abroad is briefly reviewed.The basic principles of electro-optic deflection based on the space charge,composition gradient,and temperature gradient of the crystal are described.The characteristic parameters and main influencing factors of deflection properties of the devices are discussed.Several kinds of components and application examples based on KTN electro-optic deflection are introduced and the current problems and future trends are also summarized.