激光与光电子学进展, 2019, 56 (12): 123201, 网络出版: 2019-06-13
脉冲展宽系统中的飞秒光电子传输成像特性 下载: 1083次
Transmission and Imaging Characteristics of Femtosecond Photoelectrons in Pulse-Dilation System
图 & 表
图 2. 脉冲展宽系统电磁场。(a) 阴极电压为-2 kV时的电场分布;(b) 阴极电压为-5 kV时的电场分布;(c)磁感应强度
Fig. 2. Electromagnetic field in pulse-dilation system. (a) Electronic field distribution when PC voltage is -2 kV; (b) electronic field distribution when PC voltage is -5 kV; (c) magnetic induction intensity
图 3. 阴极和阳极间的传输特性。(a)初始能量分布时间弥散;(b)空间电荷效应时间弥散
Fig. 3. Transport properties between PC and anode. (a) Temporal dispersion of initial energy distribution; (b) temporal dispersion of space charge effect
图 4. 传输过程中的时间宽度和电流密度。(a)动态时间宽度;(b)动态电流密度
Fig. 4. Time width and ampere density during transmission. (a) Dynamic time width; (b) dynamic ampere density
图 5. 在漂移区传输过程中的时间弥散。(a) Δti为200 ps时时间弥散的变化;(b)传输过程中的时间弥散变化
Fig. 5. Temporal dispersion during transport in drift area. (a) Change of temporal dispersion when Δti=200 ps; (b) change of temporal dispersion during the transport
图 6. 飞秒光电子成像特性。(a)理想成像分布;(b)阴极电压-2 kV的成像分布; (c)两种成像分布的高斯拟合曲线;(d)不同阴极电压下的空间弥散
Fig. 6. Imaging characteristics of fs photoelectrons. (a) Ideal imaging distribution; (b) imaging distribution at PC voltage of -2 kV; (c) Gaussian fitting curves of two kinds of imaging distributions; (d) spatial dispersions at different PC voltages
高海英, 白雁力, 姚荣彬, 王旬, 刘达见. 脉冲展宽系统中的飞秒光电子传输成像特性[J]. 激光与光电子学进展, 2019, 56(12): 123201. Haiying Gao, Yanli Bai, Rongbin Yao, Xun Wang, Dajian Liu. Transmission and Imaging Characteristics of Femtosecond Photoelectrons in Pulse-Dilation System[J]. Laser & Optoelectronics Progress, 2019, 56(12): 123201.