低抖动激光触发伪火花开关的研究OA北大核心CSTPCD

Pseudo-spark switches have been successfully used in a variety of pulsed power applications,including the European Large Hadron Collider,anti-missile radar systems,and aero-engine ignition.For such applications,it is important to reduce the delay and jitter of the switch to improve stability.In this paper,a laser-triggered pseudo-spark switch is designed using a laser with a wavelength of 532 nm,and the anode firing delay time and jitter of the laser-triggered pseudo-spark switch are tested under different air pressures,operating voltages,and triggering energies.The test results show that increasing the laser energy can reduce the delay and jitter of the switch,and the laser energy threshold of 1.5 mJ for switch stability can make the jitter of the switch less than 1 ns,and the delay and jitter of the switch no longer change significantly with continuing increase of the trigger energy;in addition,increasing the hydrogen pressure inside the tube can reduce the delay and jitter of the switch;when the trigger energy is large enough,changing the anode voltage does not change the delay and jitter of the switch.