Authors: Z Q Hao J Zhang Y T Li X Lu X H Yuan Z Y Zheng Z H Wang W J Ling Z Y Wei
Publish Date: 2005/03/07
Volume: 80, Issue: 4-5, Pages: 627-630
Abstract
The lifetime of plasma channels induced by femtosecond laser pulses is investigated by detecting the decay time of the fluorescence signals from ions It is found that the lifetime of the plasma can be prolonged to the order of microseconds when an additional subnanosecond laser pulse is injected into the channel This prolongation is due to the heating and further ionization through the inverse bremsstrahlung absorption of the postpulse
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