论文标题
使用可调静电螺旋相板的具有1000多个轨道角动量量子的电子涡流梁的产生
Generation of electron vortex beams with over 1000 orbital angular momentum quanta using a tuneable electrostatic spiral phase plate
论文作者
论文摘要
我们报告使用基于静电MEMS的设备生产具有1000多个量子轨道角动量（OAM）的高质量电子涡流梁。衍射和离轴电子全息实验用于表明衍射平面中涡流的直径与OAM线性增加，从而允许校准涡流的角动量含量。目前，具有较大OAM值的电子涡流梁的实现受设备的故障电压的限制。讨论了克服这个问题的潜在解决方案。
We report the use of an electrostatic MEMS-based device to produce high quality electron vortex beams with more than 1000 quanta of orbital angular momentum (OAM). Diffraction and off-axis electron holography experiments are used to show that the diameter of the vortex in the diffraction plane increases linearly with OAM, thereby allowing the angular momentum content of the vortex to be calibrated. The realization of electron vortex beams with even larger values of OAM is currently limited by the breakdown voltage of the device. Potential solutions to overcome this problem are discussed.
