Zhentang Zhao from the Shanghai Institute of Applied Physics spoke with Nature Photonics about how he and his co-workers achieved first lasing in an echo-enabled harmonic generation free-electron laser.
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Towards full-coherence FELs. Nature Photon 6, 406 (2012). https://doi.org/10.1038/nphoton.2012.118
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DOI: https://doi.org/10.1038/nphoton.2012.118