Publications by authors named "Apostolos Brimis"
Article Synopsis
- - This research demonstrates how to create Poincaré polarization singularities that resemble tornadoes by combining two orthogonally polarized ring-Airy beams that possess orbital angular momentum (OAM).
- - The singularities are influenced by phase vortices that align with the high-intensity areas of one of the beams, causing them to evolve along twisting and shrinking paths as they travel.
- - They achieve angular acceleration rates exceeding 120 rad/mm, making these Poincaré tornadoes potentially useful in fields such as singular optics, wavefront manipulation, polarization engineering, and complex media imaging.
We demonstrate that by seeding an accelerating ring-Airy beam with a finite number of off-axis optical vortices, it transforms into a tornado wave (ToW) upon propagation. Using numerical simulations, we show that both the spiraling high-intensity lobes and the optical vortices exhibit angular acceleration and follow interwinding braid-like trajectories. Likewise, we study the effect of the number, position, and topological charge of the vortices on the propagation dynamics and reveal the connection between optical vortices and optical tornados.
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