Generation of robust spatiotemporal optical vortices with transverse orbital angular momentum beyond
Recently, photons have been observed to possess transverse orbital angular momentum
(OAM); however, it is unclear as whether they can hold a transverse OAM higher than 1.
Here, we theoretically and experimentally demonstrate that high-order spatiotemporal
Bessel optical vortices (STBOVs) can stably carry transverse OAM even beyond $10^ 2$.
Through the inverse design of the spiral phase, an STBOV of any order can be controllably
generated using a 4f pulse shaper. In contrast to conventional longitudinal OAM, the vector …
(OAM); however, it is unclear as whether they can hold a transverse OAM higher than 1.
Here, we theoretically and experimentally demonstrate that high-order spatiotemporal
Bessel optical vortices (STBOVs) can stably carry transverse OAM even beyond $10^ 2$.
Through the inverse design of the spiral phase, an STBOV of any order can be controllably
generated using a 4f pulse shaper. In contrast to conventional longitudinal OAM, the vector …
Recently, photons have been observed to possess transverse orbital angular momentum (OAM); however, it is unclear as whether they can hold a transverse OAM higher than 1. Here, we theoretically and experimentally demonstrate that high-order spatiotemporal Bessel optical vortices (STBOVs) can stably carry transverse OAM even beyond . Through the inverse design of the spiral phase, an STBOV of any order can be controllably generated using a 4f pulse shaper. In contrast to conventional longitudinal OAM, the vector direction of the transverse OAM can be distinguished by the unique time-symmetrical evolution of STBOVs. More interestingly, the stability of STBOVs improves with their increasing orders owing to enhanced space-time coupling, making these beams particularly suitable for the generation of ultra-high transverse OAM. Our work paves the way for further research and application of this unique OAM of photons.
arxiv.org