Streak cameras are commonly used to measure duration and temporal structure of subpicosecond pulses. The resolution of a streak camera system strongly depends on the slew rate of the deflecting element, which approximately equals to the product of the amplitude and operation frequency of the device. As a combination of high frequency and high gradient, THz-driven deflector based streak camera system has been proposed as an attractive tool to reach femtosecond scale or even higher resolution. This study contributes to this growing area of research by investigating four promising designs of broadband THz deflectors with central frequencies at 0.3 THz. The basic properties of each structure, a systematical method to analyze their multipole fields and the derived fields are presented.

条纹相机通常用于测量亚皮秒脉冲的持续时间和时间结构。条纹相机系统的分辨率在很大程度上取决于偏转元件的斜率，该斜率大约等于设备的幅度和工作频率的乘积。作为高频和高梯度的组合，已经提出了基于THz驱动偏转器的条纹相机系统，作为达到飞秒级甚至更高分辨率的有吸引力的工具。这项研究通过研究中心频率为0.3 THz的四种宽带THz偏转器的有前途的设计，为这一不断发展的研究领域做出了贡献。提出了每种结构的基本特性，分析其多极场和导出场的系统方法。