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Orbital Angular Momentum Coupling in Elastic Photon-Photon Scattering

Journal article
Authors R. Aboushelbaya
K. Glize
A. F. Savin
M. Mayr
B. Spiers
R. Wang
J. Collier
Mattias Marklund
Rmgm Trines
R. Bingham
R. A. Norreys
Published in Physical Review Letters
Volume 123
Issue 11
ISSN 0031-9007
Publication year 2019
Published at Department of Physics (GU)
Language en
Links dx.doi.org/10.1103/PhysRevLett.123....
Keywords conversion efficiency, generation, light, beams, Physics
Subject categories Physical Sciences

Abstract

In this Letter, we investigate the effect of orbital angular momentum (OAM) on elastic photon-photon scattering in a vacuum for the first time. We define exact solutions to the vacuum electromagnetic wave equation which carry OAM. Using those, the expected coupling between three initial waves is derived in the framework of an effective field theory based on the Euler-Heisenberg Lagrangian and shows that OAM adds a signature to the generated photons thereby greatly improving the signal-to-noise ratio. This forms the basis for a proposed high-power laser experiment utilizing quantum optics techniques to filter the generated photons based on their OAM state.

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