Acceleration of Initially Moving Electrons by a Copropagation Intense Laser Pulse
JING Guo-Liang1, YU Wei2, LI Ying-Jun1, SENECHA Vinod3, CHEN Zhao-Yang4, LEI An-Le2
1School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 1000832Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 2018003Raja Ramanna Centre for Advanced Technology, Indore-452 013, India4Department of Mechanical Engineering, University of California at Berkeley, Berkeley CA-94720, USA
Acceleration of Initially Moving Electrons by a Copropagation Intense Laser Pulse
1School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 1000832Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 2018003Raja Ramanna Centre for Advanced Technology, Indore-452 013, India4Department of Mechanical Engineering, University of California at Berkeley, Berkeley CA-94720, USA
摘要Acceleration of an initially moving electron by a copropagation ultra-short ultra-intense laser pulse in vacuum is studied. It is shown that when appropriate laser pulse parameters and focusing conditions are imposed, the acceleration of electron by ascending front of laser pulse can be much stronger compared to the deceleration by descending part. Consequently, the electron can obtain significantly high net energy gain. We also report the results of the new scheme that enables a second-step acceleration of electron using laser pulses of peak intensity in the range of 1019-1020Wμm2cm2. In the first step the electron acceleration from rest is limited to energies of a few MeV, while in the second step the electron acceleration can be considerably enhanced to about 100MeV energy.
Abstract：Acceleration of an initially moving electron by a copropagation ultra-short ultra-intense laser pulse in vacuum is studied. It is shown that when appropriate laser pulse parameters and focusing conditions are imposed, the acceleration of electron by ascending front of laser pulse can be much stronger compared to the deceleration by descending part. Consequently, the electron can obtain significantly high net energy gain. We also report the results of the new scheme that enables a second-step acceleration of electron using laser pulses of peak intensity in the range of 1019-1020Wμm2cm2. In the first step the electron acceleration from rest is limited to energies of a few MeV, while in the second step the electron acceleration can be considerably enhanced to about 100MeV energy.
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2008, Vol. 25 
