Irvine S E, Dechant A, Elezzabi A Y
Ultrafast Photonics and Nano-Optics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2V4.
Phys Rev Lett. 2004 Oct 29;93(18):184801. doi: 10.1103/PhysRevLett.93.184801. Epub 2004 Oct 28.
We demonstrate the generation of 0.4-keV, sub-27 fs electron pulses using low-intensity laser pulses from a Ti:sapphire oscillator through the excitation of surface plasmon waves on a time scale within the plasmon lifetime. Modeling of the ponderomotive electron pulse acceleration yields electron energy spectra that are in excellent agreement with the observed ones. Our work opens a doorway for time-resolved experimentation using low-power, high-repetition rate laser pulses.
我们展示了利用钛宝石振荡器产生的低强度激光脉冲，通过在表面等离子体波寿命内的时间尺度上激发表面等离子体波，产生0.4千电子伏特、亚27飞秒的电子脉冲。有质动力电子脉冲加速的模型得出的电子能谱与观测结果高度吻合。我们的工作为使用低功率、高重复率激光脉冲进行时间分辨实验打开了一扇门。
