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Triggering and guiding of high voltage discharge by using femtosecond laser filaments with different parameters |
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| Authors: | Zhang Zhe Lu Xin Liang Wen-Xi Hao Zuo-Qiang Zhou Mu-Lin Wang Zhao-Hua Zhang Jie |
| Affiliation: | Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China |
| Abstract: | This paper demonstrates the triggering and guiding of the stationaryhigh voltage (HV) discharges at 5--40 kV by using plasma filamentsgenerated by femtosecond laser pulses in air. A significantreduction of the breakdown voltage threshold due to thepre-ionization of the air gap by laser filamentation is observed.The discharge experiments are performed by using laser pulses withdifferent energy from 15--60 mJ. The electron density of filamentsis detected by sonography method. The influence of the electrondensity of laser filaments on the triggering and guiding HVdischarge is experimentally investigated. The results have shownthat the behaviour of plasma filaments can strongly affect theefficiency of triggering and guiding HV discharge. |
| Keywords: | laser filaments HV discharge triggering guiding |
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