储能电容对GaAs光电导开关快前沿正负对称脉冲输出特性的影响

桂淮濛; 施卫

doi:10.7498/aps.68.20190321

摘要

针对GaAs光电导开关快前沿正负对称脉冲输出特性的研究, 对提高飞秒条纹相机的时间分辨率具有重要意义. 本文使用脉宽为60 fs的激光器触发电极间隙为3.5 mm的GaAs光电导开关, 在不同的储能电容及外加偏置电压条件下, 获得具有上升时间最快为149 ps, 电压传输效率最高为92.9%的快前沿正负对称输出, 测试结果满足条纹相机实现飞秒时间分辨率的设计需求. 实验结果的对比分析表明, 储能电容是影响电压传输效率及上升时间的重要因素之一. 同时, 结合GaAs光电导开关线性工作模式特点及电容储能特性分析表明, 当触发激光特性相同时, 随着储能电容的增大, 输出电脉冲传输效率及上升时间均会增加. 研究结果将有助于GaAs光电导开关更好地应用于飞秒条纹相机中.

关键词:

Abstract

Femtosecond streak camera is currently the only diagnostic device with a femtosecond time resolution. Scanning circuit with bilateral symmetrical output is an important part of femtosecond streak camera. To achieve better performance of the streak camera, high requirements are placed on the output of scanning circuit. Owing to the excellent feature of litter time jitter and fast response speed, a GaAs photoconductive semiconductor switch (PCSS) has become a core device in the scanning circuit. Investigating the positive and negative symmetric pulses with fast rising edgeof GaAs PCSS is of great significance to improving the time resolution of femtosecond streak camera. In this paper, a laser with a pulse width of 60 fs was used to trigger a GaAs PCSS with an electrode gap of 3.5 mm. Under different storage capacitors and bias voltages, the positive and negative symmetric pulses withthe fastest rise time of 149 ps and the highest voltage transmission efficiency of 92.9% were obtained. The test results meet the design requirements of streak camera to realize femtosecond time resolution. Through the comparative analysis of the experimental values, it is concluded that the storage capacitor can affect the efficiency and rise time of the output electrical pulse in the same trigger laser pulse. By calculating the multiplication rate of carriers in combination with the output electrical pulse waveform, it is concluded that the GaAs PCSS operates in linear mode. According to the working characteristics of the linear mode and the energy storage characteristics of the capacitor, the analysis indicates that, when the characteristics of the trigger laser pulse are the same, the transmission efficiency and rise time of the output electric pulse voltage increase with the increase in storage capacitor, which is consistent with the experimental results. This study has a certain guiding significance for the better application of GaAs PCSS in femtosecond streak camera, which also has a certain propelling effect on improving the time resolution of femtosecond streak camera.

Keywords:

GaAs photoconductive semiconductor switch /
positive and negative symmetric pulse /
fast rising edge /
energy storage capacitance

作者及机构信息

桂淮濛^1,2,
施卫²

1.
陕西工业职业技术学院信息工程学院, 咸阳　712000

2.
西安理工大学理学院, 西安　710048

通信作者: 施卫, swshi@mail.xaut.edu.cn

基金项目: 国家重点研发计划(批准号: 2017YFA0701005)、强脉冲辐射环境模拟与效应国家重点实验室基金(批准号: SKLIPR1812)、陕西省科技计划项目(批准号：2019NY-174)和陕西省教育厅科学研究项目计划(批准号: 17JK0056)资助的课题

Authors and contacts

Gui Huai-Meng^1,2,
Shi Wei²

1.
College Information Engineering, Shaanxi Polytechnic Institute, Xianyang 712000, China

2.
Department of Applied Physics, Xi’an University of Technology, Xi’an 710048, China

Corresponding author: Shi Wei, swshi@mail.xaut.edu.cn

Funds: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0701005), the State Key Laboratory of Intense Pulsed Radiation Simulation and Effect of China (Grant No, SKLIPR1812), Shaanxi Science and Technology Project, China (Grant No. 2019NY-174), and the Special Scientific Research Plan of Shaanxi Provincial Education Department, China (Grant No. 17JK0056)

文章全文 : translate this paragraph

参考文献

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施引文献

图 1 GaAs PCSS结构图

Fig. 1. Schematic diagram of GaAs PCSS.

下载: 全尺寸图片幻灯片

图 2 扫描电路结构图

Fig. 2. Schematic diagram of scanning circuit.

下载: 全尺寸图片幻灯片

图 3 扫描电路测试电路图

Fig. 3. Testing test circuit of scanning circuit.

下载: 全尺寸图片幻灯片

图 4 储能电容为33 pF, 偏置电压为± 1.9 kV时的输出波形图

Fig. 4. The output waveforms of 33 pF capacitor at the bias voltage is ± 1.9 kV.

下载: 全尺寸图片幻灯片

图 5 外加偏置电压为± 2.0 kV时的输出波形图(插图为上升沿波形图)

Fig. 5. The output waveforms at the bias voltage is ± 2.0 kV(insert is rising edge output waveform).

下载: 全尺寸图片幻灯片

表 1 不同储能电容时输出电脉冲电压传输效率

Table 1. The voltage transmission efficiency of output waveformwith different energy storage capacitor.

电容容值/pF 传输效率/%
± 1.5 kV ± 1.7 kV ± 1.9 kV ± 2.0 kV

10 50.4 47.2 46.9 44.3
33 72.4 71.1 68.5 66.2
82 78.6 76.2 73.9 72.1
100 89.3 92.2 92.9 92.6

下载: 导出CSV

表 2 不同储能电容时输出电脉冲上升时间

Table 2. The rise time of output waveform with different energy storage capacitor.

电容容值/pF 上升时间/ps
± 1.5 kV ± 1.7 kV ± 1.9 kV ± 2.0 kV

10 158 159 163 149
33 174 169 175 174
82 189 198 180 190
100 380 385 352 377

下载: 导出CSV

[1]	Wang L N, Liu J L 2017 IEEE Trans. Plasma Sci. 45 3240 Google Scholar
[2]	Ma C, Yang L, Wang S Q, Ji Y, Zhang L, Shi W 2017 IEEE Trans. Power Electr. 32 4644 Google Scholar
[3]	Zhang T, Liu K F, Gao S J, Shi Y W 2015 IEEE Trans. Dielect. El. In. 22 1991 Google Scholar
[4]	Zhang L, Shi W, Cao J C, Wang S Q, Dong C G, Yang L 2019 IEEE Electr. Device Lett. 40 291 Google Scholar
[5]	Shi W, Fu Z L 2013 IEEE Electr. Device Lett. 34 93 Google Scholar
[6]	Gaudet J A, Skipper M C, Abdalla M D, Ahem S M. Romero S P, Mar A, Zutavem F J, Loubriel G M, O’Malley M W, Helgeson W D 2000 Intense Microwave Pulses VII Orlando, USA, April 24−28, 2000 p121
[7]	Hu L, Su J C, Qiu R C, Fang X 2018 IEEE Trans. Electron Dev. 65 1308 Google Scholar
[8]	EI A S, De A A, Arnaud-Cormos D, Couderc V, Leveque P 2011 IEEE Photon. Technol. Lett. 23 673 Google Scholar
[9]	施卫, 闫志巾 2015 物理学报 64 228702 Google Scholar Shi W, Yan Z J 2015 Acta Phys. Sin. 64 228702 Google Scholar
[10]	Liu J Y, Wang J, Shan B, Wang C, Chang Z H 2004 Fourth-Generation X-Ray Sources and Ultrafast X-Ray Detectors California, USA, August 4−6, 2004 p123
[11]	Larsson J, Chang Z, Judd E, Schuck P J, Falcone R W, Heimann P A, Padmore H A, Kapteyn H C, Bucksbaum P H, Murnane M M, Lee R W, Machacek A, Wark J S, Liu X, Shan B 1997 Opt. Lett. 22 1012 Google Scholar
[12]	Maksimchuk A, Kim M, Workman J, Korn G, Squier J, Du D, Umstadter D, Mourou G,Bouvier M 1996 Rev. Sci. Instrum. 67 697 Google Scholar
[13]	Liu J Y, Wang J, Shan B, Wang C, Chang Z H 2003 Appl. Phys. Lett. 82 3553 Google Scholar
[14]	Shi W, Yang L, Hou L, Liu Z N, Xing Z Y 2019 Appl. Sci. 9 328 Google Scholar
[15]	Shi W, Gui H M, Zhang L, Li M C, Ma C, Wang L Y, Jiang H 2013 Opt. Lett. 38 4339 Google Scholar
[16]	Shi W, Gui H M, Zhang L, Ma C, Li M X, Xu M, Wang L Y 2013 Opt. Lett. 38 2330 Google Scholar
[17]	Gui H M, Shi W, Ma C, Fan L L, Zhang L, Zhang S, Xu Y J 2015 IEEE Photon. Technol. Lett. 27 2015 Google Scholar
[18]	Shi W, Zhang L, Gui H M, Hou L, Xu M, Qu G H 2013 Appl. Phys. Lett. 102 154106 Google Scholar
[19]	桂淮濛, 施卫 2018 物理学报 67 184207 Google Scholar Gui H M, Shi W 2018 Acta Phys. Sin. 67 184207 Google Scholar
[20]	Xu M, Li R B, Ma C, Shi W 2016 IEEE Electr. Device Lett. 37 1147 Google Scholar

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储能电容对GaAs光电导开关快前沿正负对称脉冲输出特性的影响