A rectangular pulse generator plays an important role in the calibration of impulse measurement as well as the investigation into electromagnetic pulse effect. In addition, the characteristics of an output switch have a direct impact on the generator's output waveform. Following the basic requirements for the switch in a rectangular generator, this paper proposes a new type of laser-triggered film switch with a compact structure and high repeatability. The mechanical structure and operating mechanism of this switch have been elaborated. To verify the feasibility of this switch model, the irradiation experiments were carried out to study the interaction between the laser and the film, and the inductance of the switch has been estimated. Then, to test the characteristics of the switch, a Blumlein rectangular pulse generator based on this switch has been constructed. The experiment results show that the generator worked well in consecutive jobs and had a wild adjustable amplitude range from 2 kV to 10 kV, with a minimum rise-time of less than 1 ns. The effect of the laser loophole and the thickness of the film on the switch have also been investigated. Finally, the plasma developing process of the laser-triggered film switch has been discussed.

中文翻译：

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纳秒矩形脉冲发生器激光触发薄膜开关的研制

矩形脉冲发生器在脉冲测量的校准以及电磁脉冲效应的研究中起着重要的作用。此外，输出开关的特性对发生器的输出波形有直接影响。针对矩形发生器中开关的基本要求，本文提出了一种结构紧凑、重复精度高的新型激光触发薄膜开关。详细阐述了该开关的机械结构和操作机构。为了验证该开关模型的可行性，进行了辐照实验，研究了激光与薄膜的相互作用，并对开关的电感进行了估算。然后，为了测试开关的特性，已经构建了基于该开关的 Blumlein 矩形脉冲发生器。实验结果表明，该发生器在连续工作中运行良好，并且具有从 2 kV 到 10 kV 的广泛可调幅度范围，最小上升时间小于 1 ns。还研究了激光漏洞和薄膜厚度对开关的影响。最后讨论了激光触发薄膜开关的等离子体显影过程。