A compact large-format streak tube for imaging lidar

作者：Dandan Hui, Duan Luo, Liping Tian, Lu Yu, Pïng Chen, Junfeng Wang, Xiaofeng Sai, Wenlong Wen, Xing Wang, Liwei Xin, Wei Zhao, Jinshou Tian · 发表于：Review of Scientific Instruments · 年份：2018 · DOI：10.1063/1.5024269 · 被引用次数：19 · 研究领域：Advanced Optical Sensing Technologies、Terahertz technology and applications、Radiation Detection and Scintillator Technologies

The streak tubes with a large effective photocathode area, large effective phosphor screen area, and high photocathode radiant sensitivity are essential for improving the field of view, depth of field, and detectable range of the multiple-slit streak tube imaging lidar. In this paper, a high spatial resolution, large photocathode area, and compact meshless streak tube with a spherically curved cathode and screen is designed and tested. Its spatial resolution reaches 20 lp/mm over the entire Φ28 mm photocathode working area, and the simulated physical temporal resolution is better than 30 ps. The temporal distortion in our large-format streak tube, which is shown to be a non-negligible factor, has a minimum value as the radius of curvature of the photocathode varies. Furthermore, the photocathode radiant sensitivity and radiant power gain reach 41 mA/W and 18.4 at the wavelength of 550 nm, respectively. Most importantly, the external dimensions of our streak tube are no more than Φ60 mm × 110 mm.