论文标题
通过紧密聚焦圆柱矢量二维时空光学涡流，朝向光弹性波袋朝向光学环形波袋
Towards optical toroidal wavepacket through tightly focusing of cylindrical vector two dimensional spatiotemporal optical vortex
论文作者
论文摘要
携带横向轨道角动量（OAM）的时空光学涡旋（STOV）由于可以利用新的自由度而对光学领域具有迅速增长的兴趣。在本文中，我们首次提出了圆柱矢量二维型StoV（2D-STOV），其中X-T和Y-T平面中都包含两个正交横向绿色，并使用Richards-Wolf-Wolf wolf Vectorial Vectorial衍射理论研究了此类领域的紧密聚焦。产生了具有类似于环形拓扑的极化结构的高度狭窄的时空波袋，其时空强度分布类似于Yo-yo球的形状。高度聚焦的径向极化的2D-Stovs将为横向磁环形拓扑产生波袋，而聚焦的方位角极化的2D-Stovs将导致波袋朝向横向电动环形拓扑。提出的方法可以用一种可控制的方式铺平一种实验生成光学环形波袋的方法，并具有潜在的电子加速度，光子学，能量，能量，瞬态光 - 瞬态光 - 频谱，光谱，量子信息处理等中的应用。
Spatiotemporal optical vortices (STOVs) carrying transverse orbital angular momentum (OAM) are of rapidly growing interest for the field of optics due to the new degree of freedom that can be exploited. In this paper, we propose cylindrical vector two dimensional STOVs (2D-STOVs) containing two orthogonal transverse OAMs in both x-t and y-t planes for the first time, and investigate the tightly focusing of such fields using the Richards-Wolf vectorial diffraction theory. Highly confined spatiotemporal wavepackets with polarization structure akin to toroidal topology is generated, whose spatiotemporal intensity distributions resemble the shape of Yo-Yo balls. Highly focused radially polarized 2D-STOVs will produce wavepackets towards transverse magnetic toroidal topology, while the focused azimuthally polarized 2D-STOVs will give rise to wavepackets towards transverse electric toroidal topology. The presented method may pave a way to experimentally generate the optical toroidal wavepackets in a controllable way, with potential applications in electron acceleration, photonics, energy, transient light-matter interaction, spectroscopy, quantum information processing, etc.
