偏心时空双光涡旋和三光涡旋的数值仿真

Numerical Simulation of Eccentric Spatiotemporal Dual-and-Trible Optical Vortices

时空光涡旋由于其携带横向轨道角动量这一独特的性质引起研究人员的广泛关注,与普通涡旋光束相比,其能提供额外的自由度,这标志着对光场调控的水平能够达到更高的层次。以同时在时空域和空域均携带螺旋相位的时空-空域光涡旋为基础,数值模拟了时空-时空光涡旋和时空-时空-空域光涡旋。通常根据时空光涡旋中不同光涡旋之间共心的情形,通过引入参量来调控时空域光涡旋中心的位置,从而达到不同光涡旋之间不共心的目的,并数值模拟了偏心双光涡旋和偏心三光涡旋这两种物理模型。本研究丰富时空光涡旋的模式,并为其后续研究提供理论基础。

The spatiotemporal optical vortex has attracted the attention of researchers due to its unique property of carrying transverse orbital angular momentum.Compared with ordinary vortex beams,it can provide additional degrees of freedom and marks a higher level of modulation of light fields.Based on the spatiotemporal-spatial optical vortex with spiral phases in both spatiotemporal and spatial domains,the spatiotemporal-spatiotemporal optical vortex and spatiotemporal-spatiotemporalspatial optical vortex with spiral phases on two different spatiotemporal planes are numerically simulated.According to the concentric situation between different vortices in the usual spatiotemporal optical vortex,by introducing parameters to modulate the position of the center of the spatiotemporal domain vortex,we have achieved the goal of eccentricity between different vortices and numerically simulated eccentric double vortex and eccentric triple vortex.This research enriches the mode of spatiotemporal optical vortices and provides a theoretical basis for their subsequent research.