Free Electron Laser Generation of X-Ray Poincaré Beams
arXiv:2003.11365 · doi:10.1088/1367-2630/ab984f
Abstract
An optics-free method is proposed to generate X-ray radiation with spatially variant states of polarization via an afterburner extension to a Free Electron Laser (FEL). Control of the polarization in the transverse plane is obtained through the overlap of different coherent transverse light distributions radiated from a bunched electron beam in two consecutive orthogonally polarised undulators. Different transverse profiles are obtained by emitting at a higher harmonic in one or both of the undulators. This method enables the generation of beams structured in their intensity, phase, and polarization - so-called Poincaré beams - at high powers with tunable wavelengths. Simulations are used to demonstrate the generation of two different classes of light with spatially inhomogeneous polarization - cylindrical vector beams and full Poincaré beams.
arXiv comment10 pages, 3 figures
References in corpus (9)
- Electromagnetic Force and Momentum
- Electromagnetic Angular Momentum
- Generation of arbitrary cylindrical vector beams on the higher order Poincare sphere
- Generation and dynamics of optical beams with polarization singularities
- Angular Momentum of Twisted Radiation from an Electron in Spiral Motion
- Polarization shaping for control of nonlinear propagation
- Obtaining high degree of circular polarization at X-ray FELs via a reverse undulator taper
- Fast Polarization Switching Demonstration Using Crossed-Planar Undulator in a Seeded Free Electron Laser
- Modelling elliptically polarised Free Electron Lasers
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