Work

Superradiant scattering from evanescent waves

Year: 2026

Type: article

Abstract: Evanescent waves, such as the ones present at the interface between a laser and an overdense plasma, provide extremely localized fields that are able to induce rapid accelerations in charged particles. We show that such accelerations can generate high-energy, low-divergence, directional photon beams even for moderately relativistic electrons ( γ ≃ 10 ). This process can also lead to superradiant emission of bright, ultrashort pulses of light, as long as the electron bunch is suitably modulated. Although never directly observed, this mechanism should leave clear signatures in laser-plasma acceleration experiments with minimal setup adaptations.

Source: Physical Review Research

DOI: 10.1103/physrevresearch.8.l012013

Authors: M. Pardal, R. A. Fonseca, J. Vieira

Institutions: University of Lisbon, Iscte – Instituto Universitário de Lisboa

Language: English

Topic: Laser-Plasma Interactions and Diagnostics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funders: Fundação para a Ciência e a Tecnologia, Eupraxia Pharmaceuticals