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Low Resistance and Long Lifetime Plasma Channel Generated by Filamentation of Femtosecond Laser Pulses in Air
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作者 季忠川 朱佳斌 +4 位作者 王占新 葛晓春 王文跃 刘建胜 李儒新 《Plasma Science and Technology》 SCIE EI CAS CSCD 2010年第3期295-299,共5页
An experimental investigation of the length and resistance of the laser plasma channel generated by filamentation of fs laser pulses in air was presented. It was found that the length of the plasma channel was differe... An experimental investigation of the length and resistance of the laser plasma channel generated by filamentation of fs laser pulses in air was presented. It was found that the length of the plasma channel was different from that of the laser filament. This phenomenon was commensurate with a special self-guide mechanism without ionization. Through increase of the laser energy the plasma channel could be prolonged and the resistance could be reduced. To get even lower resistance, more effective control would be needed over the multi-filament. The lifetime of the plasma channel was increased by a factor of 4.5 by pulse sequences, which were generated by detuning the regenerative amplifier in the chirped pulse amplification (CPA) laser system. 展开更多
关键词 SELF-FOCUS laser filament laser plasma channel RESISTANCE LIFETIME
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