期刊
IEEE TRANSACTIONS ON ELECTRON DEVICES
卷 70, 期 5, 页码 2255-2261出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TED.2023.3262762
关键词
Jitter; Delays; Switches; Gallium arsenide; Electrodes; Gas lasers; Voltage measurement; Avalanche mode; delay jitter time; photoconductive semiconductor switches (PCSSs)
The delay jitter characteristics of GaAs PCSSs triggered in avalanche mode were experimentally investigated under dc bias. The PCSS was tested under a 40-kV bias voltage to verify its withstanding voltage and reliability. The delay jitter time of PCSS at different triggering positions was measured, showing the shortest delay jitter time at the middle position of the cathode electrode. Continuous shots led to an increase in delay jitter time, which was attributed to device damage verified by SEM and EDS analysis. Additionally, a bipolar high-voltage gas switch integrated with PCSSs was successfully triggered by a low-energy fiber laser.
The delay jitter characteristics of gallium arsenide (GaAs) photoconductive semiconductor switches (PCSSs) triggered in avalanche mode were experimentally investigated under dc bias. In the dark-state measurement, the PCSS was tested under a 40-kV bias voltage to verify its withstanding voltage and reliability. In the ON-state measurement, the delay jitter time of PCSS at different triggering positions was measured. The experimental results showed that the shortest delay jitter time was obtained when the laser was applied to the middle position of the cathode electrode. To evaluate the long-time stability, the delay-jitter time was recorded after continuous shots. It shows an ascending trend in delay jitter time with the increase in operating shots. The degeneration of the delay jitter time of the PCSS was mainly attributed to the device damage, including electrode ablation and filament current ablation, which was verified by the analysis of scanning electron microscopy (SEM) and X-ray energy dispersive spectroscopy (EDS). Furthermore, a bipolar high-voltage gas switch integrated with PCSSs was successfully triggered by a low-energy fiber laser.
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