A Laser Triggered High Pressure Gas Switch for Microwave Compression

Abstract

Summary form only given. Microwave compression is very effective approach to get high power microwave output. Microwave compression system includes primary microwave generation system, resonation cavity and switches. The self breakdown gas switch is applied in our microwave compression experimental system, although the microwave compression system can output very high power microwave pulse, but the fluctuation of the power of the output microwave pulse is very large, furthermore, it operates unstable, the main reason of the fluctuation is the difference of the onset electrical field of the high pressure gas breakdown. In order to get almost same microwave power output and operate reliably, a laser triggered high-pressure gas switch was proposed to replace the self-breakdown high-pressure gas switch in the microwave compression system. The laser triggered high pressure gas switch uses the fourth double frequency light of the 1064um laser to trigger the high pressure N;/SF6 gas in the rectangular resonator, and then rectangular resonator radiate the high power microwave. The design of the laser triggered high pressure gas switch is described in detail and the its experimental results were also discussed in the article, and finally, the we discuss the difference of the laser triggered gas switch in RF field and DC field.