论文标题
时空光学涡旋的第二次谐波生成和轨道角动量的保护
Second harmonic generation of spatiotemporal optical vortices and conservation of orbital angular momentum
论文作者
论文摘要
时空光学涡旋（STOV）是一种新型的内在光学轨道角动量（OAM）结构，其中OAM矢量与传播方向是正交的[Optica 6，1547，（2019）]，并且在时空中的光相循环液。在这里，我们在实验和理论上首次证明了携带StoV携带脉冲的第二个谐波以及基于StoV的OAM的生成。我们的实验验证了单个光子可以具有垂直于其传播方向的固有轨道角动量。
Spatiotemporal optical vortices (STOVs) are a new type of intrinsic optical orbital angular momentum (OAM) structure in which the OAM vector is orthogonal to the propagation direction [Optica 6, 1547, (2019)] and the optical phase circulates in space-time. Here, we experimentally and theoretically demonstrate, for the first time, the generation of the second harmonic of a STOV-carrying pulse along with the conservation of STOV-based OAM. Our experiments verify that individual photons can have intrinsic orbital angular momentum perpendicular to their propagation direction.
