Efficient Generation of Tunable Magnetic and Optical Vortices Using Plasmas

Plasma is an attractive medium for generating strong microscopic magnetic structures and tunable electromagnetic radiation with predictable topologies due to its extraordinary ability to sustain and manipulate high currents and strong fields. Here, using theory and simulations, we show efficient gen...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2022-04
Main Authors: Wu, Yipeng, Xu, Xinlu, Zhang, Chaojie, Nie, Zan, Sinclair, Mitchell, Farrell, Audrey, Marsh, Ken A, Hua, Jianfei, Lu, Wei, Mori, Warren B, Joshi, Chan
Format: Article
Language:English
Subjects:
Angular momentum
Electromagnetic radiation
Lasers
Plasma density
Plasmas (physics)
Topology
Vortices
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Plasma is an attractive medium for generating strong microscopic magnetic structures and tunable electromagnetic radiation with predictable topologies due to its extraordinary ability to sustain and manipulate high currents and strong fields. Here, using theory and simulations, we show efficient generation of multi-megagauss magnetic and tunable optical vortices when a sharp relativistic ionization front (IF) passes through a relatively long-wavelength Laguerre-Gaussian (LG) laser pulse with orbital angular momentum (OAM). The optical vortex is frequency upshifted within a wide spectral range simply by changing the plasma density and compressed in duration. The topological charges of both vortices can be manipulated by controlling the OAM mode of the incident LG laser and/or by controlling the topology and density of the IF. For relatively high (low) plasma densities, most energy of the incident LG laser pulse is converted to the magnetic (optical) vortex.
ISSN:2331-8422