Intense Far-Infrared Free-Electron Laser-Pulses with a Length of 6 Optical Cycles

TitleIntense Far-Infrared Free-Electron Laser-Pulses with a Length of 6 Optical Cycles
Publication TypeJournal Article
Year of Publication1995
AuthorsG.M.H. Knippels, RFXAM Mols, A.FG van der Meer, D. Oepts, P.W van Amersfoort
JournalPhysical Review Letters
Volume75
Number9
Pagination1755-1758
Date PublishedAug 28
ISBN Number0031-9007
Abstract

Second-order optical autocorrelation measurements are reported for a far-infrared free-electron laser. Second-harmonic generation in an 840-mu m-long CdTe crystal is used to provide the nonlinear autocorrelation signal. At wavelengths of 10.4 and 24.5 mu m, FWHM pulse durations of 220 and 500 fs, respectively, are measured. In both cases this corresponds to six cycles of the optical field. The pulse energy ranges up to 25 mu J. Evidence is presented that each pulse evolves into a train of subpulses at large values of the cavity desynchronism.

DOI10.1103/PhysRevLett.75.1755
PID

71ee8b69213c114ee61c6c1b67aed246

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