Elliott R A, Shaw J B
Appl Opt. 1979 Apr 1;18(7):1025-33. doi: 10.1364/AO.18.001025.
The use of electrooptic beam deflectors as streak cameras is analyzed. Two basic designs employing linear electrooptic crystals are considered. One is constructed of pairs of prisms, and the other exploits a traveling focusing interaction created in the crystal by an electrical pulse propagating down a strip transmission line. We show that the transit time of the optical signal imposes a strict limit on the performance of the deflectors and necessitates a trade-off between the time resolution and the number of resolvable spots or range which can be achieved. The optimum geometry of these devices is determined assuming a specific electrical driving pulse, and schemes for multiple stage deflectors are presented and optimized. We also consider practical constraints and show that the low impedance inherent to these systems further restricts their performance. Estimates of the performance limits which can be achieved with present day high voltage switching technology are given.
分析了将电光光束偏转器用作条纹相机的情况。考虑了采用线性电光晶体的两种基本设计。一种由棱镜对构成,另一种利用沿带状传输线传播的电脉冲在晶体中产生的行波聚焦相互作用。我们表明,光信号的渡越时间对偏转器的性能施加了严格限制,并且需要在时间分辨率与可实现的可分辨光斑数量或范围之间进行权衡。假设特定的电驱动脉冲来确定这些器件的最佳几何形状,并提出并优化了多级偏转器的方案。我们还考虑了实际限制,并表明这些系统固有的低阻抗进一步限制了它们的性能。给出了利用当今高压开关技术可实现的性能极限估计。