摘要
Electron acceleration in a tightly focused ultra-intensity linear polarized laser beam is investigated numerically. It has been found that the acceleration is strong phase dependent and is periodic to the variety of the initial laser field phase. When optimal initial parameters are chosen, the electron can be accelerated effectively. The accelerated electrons are emitted in pulses of which the full width is less than the half period of the laser field.
Electron acceleration in a tightly focused ultra-intensity linear polarized laser beam is investigated numerically. It has been found that the acceleration is strong phase dependent and is periodic to the variety of the initial laser field phase. When optimal initial parameters are chosen, the electron can be accelerated effectively. The accelerated electrons are emitted in pulses of which the full width is less than the half period of the laser field.
基金
This work was supported partially by the National Natural Science Foundation of China (No. 69925513 and 19974058)Chinese Ministry of Science and Technology ( No. G1999075204)Chinese Academy of Sciences (No. KGCX2-SW-10 and KGCX2-SW-114) Major Basic Research Project of Shanghai Commission of Science and Technology.
