论文标题
单光束结构光波的非弹性电子散射
Inelastic Electron Scattering at a Single-Beam Structured Light Wave
论文作者
论文摘要
在这项工作中，我们证明了在传播的Hermite-Gaussian光束上慢电子波袋的无弹性散射。脉冲的雌雄同体高斯光束因此，具有足够大动量成分的电子的电子潜力，从而导致电子的无弹性散射及其沿纵向方向的束。我们表明，相互作用后所产生的能量生成光谱受到电子在这种爆炸性潜力中的自我干扰的强烈影响。结果表明，对于各种光波长和强度，可以观察到这种效果，并进一步讨论电子速度和光强度的变化如何控制电子波袋的能量调制。这种效果通过利用结构化电磁场的广阔景观来打开一个新的平台来操纵电子波袋。
In this work we demonstrate the inelastic scattering of slow-electron wavepackets at a propagating Hermite-Gaussian light beam. The pulsed Hermite-Gaussian beam thereby forms a ponderomotive potential for the electron with large enough momentum components, leading to the inelastic scattering of electrons and their bunching along the longitudinal direction. We show that the resulting energy-gain spectra after the interaction is strongly influenced by the self-interference of the electron in this ponderomotive potential. It is shown that this effect is observable for various optical wavelengths and intensities and further discuss how the variation of the electron velocity and the light intensity allow to control the energy modulation of the electron wavepacket. This effect opens up a new platform for manipulating the electron wavepacket by utilizing the vast landscape of structured electromagnetic fields.
