Generation of nonlinear vortex precursors

Abstract

We numerically study the propagation of a few-cycle pulse carrying orbital angular momentum (OAM) through a dense atomic system. Nonlinear precursors consisting of high-order vortex har- monics are generated in the transmitted field due to ultrafast Bloch oscillation. The nonlinear precursors survive to propagation effects and are well separated with the main pulse, which provide a straightforward way of measuring precursors. By the virtue of carrying high-order OAM, the obtained vortex precursors as information carriers have potential applications in optical informa- tion and communication fields where controllable loss, large information-carrying capacity and high speed communication are required.

References in corpus (8)

• Entanglement of Orbital Angular Momentum States of Photons
• Attosecond XUV vortices from high-order harmonic generation
• Transferring orbital and spin angular momenta of light to atoms
• Generation of Intense High-Order Vortex Harmonics
• Off-axis excitation of hydrogenlike atoms by twisted photons
• Optical precursors in transparent media
• Simple asymptotic forms for Sommerfeld and Brillouin precursors
• Dynamic electron correlation in interactions of light with matter formulated in b-space

Cited by in corpus (2)

• Dynamic Spatiotemporal Beams that Combine Two Independent and Controllable Orbital-Angular-Momenta Using Multiple Optical-Frequency-Comb Lines
• Space-time non-separable dynamics of ultrashort vortex pulse with power exponential spectrum