X-ray pulse generation with ultra-fast flipping of its orbital angular momentum

J. Morgan, B. W. J. McNeil

Research output: Contribution to journalLetterpeer-review

3 Citations (Scopus)
25 Downloads (Pure)


A method to temporally tailor the properties of X-ray radiation carrying Orbital Angular Momentum (OAM) is presented. In simulations, an electron beam is prepared with a temporally modulated micro-bunching structure which, when radiating at the second harmonic in a helical undulator, generates OAM light with a corresponding temporally modulated intensity. This method is shown to generate attosecond pulse trains of OAM light without the need for any additional external optics, making the wavelength range tunable. In addition to the OAM pulse train, the method can be adapted to generate radiation where the handedness of the OAM mode may also be temporally modulated (flipped).
Original languageEnglish
Pages (from-to)31171-31181
Number of pages11
JournalOptics Express
Issue number17
Publication statusPublished - 10 Aug 2022


  • X-Ray
  • pulse generation
  • ultra-fast
  • flipping
  • orbital angular momentum (OAM)


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