Phys. Rev. Lett. 89, 234801 (2002) [4 pages]Time-Resolved Phase Measurement of a Self-Amplified Free-Electron LaserSee Also: Erratum Received 27 August 2002; published 18 November 2002 We report on the first time-resolved phase measurement on self-amplified spontaneous emission (SASE) free-electron laser (FEL) pulses. We observed that the spikes in the output of such free-electron laser pulses have an intrinsic positive chirp. We also observed that the energy chirp in the electron bunch mapped directly into the FEL output. Under certain conditions, the two chirps cancel each other. The experimental result was compared with simulations and interpreted with SASE theory. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.234801
DOI:
10.1103/PhysRevLett.89.234801
PACS:
41.60.Cr, 42.25.Bs, 42.55.Vc, 52.59.Rz
See AlsoErratum: Yuelin Li, John Lewellen, Zhirong Huang, Vadim Sajaev, and Stephen V. Milton, Erratum: Time-Resolved Phase Measurement of a Self-Amplified Free-Electron Laser [Phys. Rev. Lett. 89, 234801 (2002)], Phys. Rev. Lett. 90, 199903 (2003). |
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