Spatiotemporal Optical Vortices

By N. Jhajj, I. Larkin, E. Rosenthal, Sina Zahedpour, J. Wahlstrand, H. Milchberg. 2016

191 citations recorded by the source corpus.

We present the first experimental evidence, supported by theory and simulation, of spatiotemporal optical vortices (STOVs). Quantized STOVs are a fundamental element of the nonlinear collapse and subsequent propagation of short optical pulses in material media. A STOV consists of a ring-shaped null in the electromagnetic field about which the phase is spiral, forming a dynamic torus which is concentric with and tracks the propagating pulse. Depending on the sign of the material dispersion, the local electromagnetic energy flow is saddle or spiral about the STOV. STOVs are born and evolve conserving topological charge; they can be simultaneously created in pairs with opposite windings, or generated from a point null. Our results, here obtained for optical pulse collapse and filamentation in air, are generalizable to broad class of nonlinearly propagating waves.

Subfields: Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/fb39e2a7055d929115c3533d2c05b574751674d4

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

(INVITED) Vortex solitons: Old results and new perspectives (2019, background): “Thus one may define spatiotemporal vortices [149, 150] as modes given by ansatz (6) in which (r, θ) are realized as the polar coordinates in the (x, τ) plane.”
Roadmap on spatiotemporal light fields (2022, background): “Recently, there was a great theoretical [55–57] and experimental [41, 45, 50, 58, 59] progress in studies of spatiotemporal vortex pulses (STVPs) carrying an intrinsic OAM orthogonal (or, generally, tilted) to their propagation direction.”