Free-electron lasers: echoes of photons past

Lawrence T. Campbell, Brian W. J. McNeil

Research output: Contribution to journalLiterature reviewpeer-review

1 Citation (Scopus)
65 Downloads (Pure)


High-harmonic generation is an established method to significantly upshift laser photon energies. Now, researchers at the SLAC National Accelerator Laboratory have used echo concepts to generate coherent high-harmonic output from an electron-beam light source.
Original languageEnglish
Pages (from-to)501-502
Number of pages2
JournalNature Photonics
Publication statusPublished - 28 Jul 2016


  • photons
  • high harmonic generation
  • coherent radiation
  • two-beam EEHG approaches
  • X-rays


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