Research on electrical pulse of 20-kV/30-Hz GaAs photoconductive switches
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摘要:
Photoconductive semiconductor switches (PCSSs) are widely used in high power ultra- wideband source applications and precise synchronization control due to their high power low-jitter high-repetition-frequency.In this letter, a 14-mm gap semi-insulating GaAs PCSS biased under 20 kV is triggered by a 1064-nm laser with a repetition frequency of 30 Hz.Although the trigger condition is greater than the threshold of the lock-on effect, the high gain mode is not observed.The results indicate that the high gain mode of the PCSS is quenched by decreasing the remnant voltage of pulsed energy storage capacitor.