论文标题
矢量时空波浪包
Vector space-time wave packets
论文作者
论文摘要
时空波数据包（STWP）是传播不变的脉冲梁，其特性源于它们的空间和时间自由度之间的紧密关联。直到最近，只有标量STWP以光片的形式合成。在这里，我们合成通过准备极化的时空光谱并通过时间分辨的复杂场测量值来揭示在STWP体积上的极化分布，从而构成了在所有维度上定位的矢量STWP。这种矢量STWP具有圆柱形的对称极化矢量结构，这些载体结构需要对光场的空间，时间和极化程度进行联合操纵。这些结果可能在粒子操作以及非线性和量子光学元件中有用。
Space-time wave packets (STWPs) are propagation-invariant pulsed beams whose characteristics stem from the tight association between their spatial and temporal degrees of freedom. Until recently, only scalar STWPs have been synthesized in the form of light sheets. Here we synthesize vector STWPs that are localized in all dimensions by preparing polarization-structured spatio-temporal spectra and unveil the polarization distribution over the STWP volume via time-resolved complex field measurements. Such vector STWPs are endowed with cylindrically symmetric polarization vector structures, which require joint manipulation of the spatial, temporal, and polarization degrees-of-freedom of the optical field. These results may be useful in particle manipulation, and in nonlinear and quantum optics.
