Spatiotemporal optical vortices(STOVs)are distinguished by their intricate phase structures and orbital angular momentum properties.This study demonstrates a coherent 4Pi-focused method generating STOV arrays by tight...Spatiotemporal optical vortices(STOVs)are distinguished by their intricate phase structures and orbital angular momentum properties.This study demonstrates a coherent 4Pi-focused method generating STOV arrays by tightly focusing the wave packets carrying spatiotemporal vortices and an additional spatial vortex.Numerical simulations reveal that the structural characteristics of the STOV array are governed by the interplay between the spatiotemporal and spatial topological charges of the incident wave packet.Notably,the introduction of spin angular momentum into the wave packet induces spin-orbit coupling,resulting in a distinctive tilt of the STOV array.These findings open potential pathways for high-dimensional optical manipulation and advanced optical information multiplexing.展开更多
基金supported by the National Natural Science Foundation of China(Nos.12274074 and 12134013)the Natural Science Foundation of Jiangsu Province(No.BK20242024)the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX25_0437)。
文摘Spatiotemporal optical vortices(STOVs)are distinguished by their intricate phase structures and orbital angular momentum properties.This study demonstrates a coherent 4Pi-focused method generating STOV arrays by tightly focusing the wave packets carrying spatiotemporal vortices and an additional spatial vortex.Numerical simulations reveal that the structural characteristics of the STOV array are governed by the interplay between the spatiotemporal and spatial topological charges of the incident wave packet.Notably,the introduction of spin angular momentum into the wave packet induces spin-orbit coupling,resulting in a distinctive tilt of the STOV array.These findings open potential pathways for high-dimensional optical manipulation and advanced optical information multiplexing.
