高时间分辨率条纹变像管的动态特性研究

发布时间：2018-04-27 01:17

本文选题：条纹变像管 + 超快光学　；参考：《光子学报》2016年10期

【摘要】：针对高时空分辨的设计要求,分析影响条纹相机中条纹变像管的物理时间弥散、技术时间弥散和扫描电路触发晃动的因素,优化设计了行波偏转前置磁透镜聚焦的条纹变像管系统.利用CST仿真软件研究了行波偏转器内部的时变电磁场分布,计算了行波偏转器内电磁波的传播速度.结果表明,行波偏转器的指长为8mm、指宽为1mm、指间距为0.24mm、管脚长为2.5mm、板厚为1mm及总长度为17.12mm时,实现了电子团的飞行速度与扫描电脉冲沿行波偏转器的传输速度的匹配.采用电子追迹法和瑞利判据分析了条纹变像管的动态时间和空间特性,得到单次扫描动态时间分辨率为200fs、同步扫描时间分辨率为208fs、动态空间分辨率优于20lp/mm.
[Abstract]:According to the design requirements of high spatial and temporal resolution, the factors affecting the dispersion of physical time, technical time dispersion and scanning circuit triggering sloshing of stripe variable-image tube in stripe camera are analyzed. The stripe variable image tube system of traveling wave deflection front magnetic lens focusing is designed. The time-varying electromagnetic field distribution in traveling wave deflector is studied by CST simulation software, and the velocity of electromagnetic wave propagation in traveling wave deflector is calculated. The results show that when the finger length, finger width, finger spacing, pin length, plate thickness and total length of traveling wave deflector are 8mm, 1mm, 0.24mm, 2.5mm, 1mm and 17.12mm, the flight velocity of the electron cluster can be matched with the transmission speed of the scanning electric pulse along the traveling wave deflector. The dynamic time and space characteristics of the striped variable-image tube are analyzed by using the electron tracing method and Rayleigh criterion. The dynamic time resolution of single scan is 200fs, the synchronous scanning time resolution is 208 fs, and the dynamic spatial resolution is better than 20lp / mmm.
【作者单位】：西安工业大学光电工程学院;中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室;西安石油大学理学院;
【基金】：国家自然科学基金(No.61501363) 陕西省教育厅科研计划项目(No.15JK1351) 西安工业大学光电工程学院院长基金(No.13GDYJY01)资助~~
【分类号】：TB852.1

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