Plasma Parameter of a Capillary Discharge-Produced Plasma Channel to Guide an Ultrashort Laser Pulse

Higashiguchi, Takeshi; Terauchi, Hiromitsu; Jin-xiang Bai; Yugami, Noboru
January 2009
AIP Conference Proceedings;1/22/2008, Vol. 1086 Issue 1, p153
Academic Journal
We have observed the optical guiding of a 100-fs laser pulse with the laser intensity in the range of 1016 W/cm2 using a 1.5-cm long capillary discharge-produced plasma channel for compact electron acceleration applications. The optical pulse propagation using the plasma channel is achieved with the electron densities of 1017–1018 cm-3 and the electron temperatures of 0.5–4 eV at a discharge time delay of around 150 ns and a discharge current of 500 A with a pulse duration of 100–150 ns. An energy spectrum of the accelerated electrons from a laser-plasma acceleration scheme showed a peak at 1.3 MeV with a maximum energy tail of 1.6 MeV.


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