期刊
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
卷 15, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevSTAB.15.030705
关键词
-
资金
- Department of Energy [DE-AC02-76SF00515]
We present a novel method for measuring the duration of femtosecond x-ray pulses from self-amplified spontaneous emission free electron lasers by performing statistical analysis in the spectral domain. Analytical expressions of the spectral correlation function were derived in the linear regime to extract both the pulse duration and the spectrometer resolution. Numerical simulations confirmed that the method can be also used in the nonlinear regime. The method was demonstrated experimentally at the Linac Coherent Light Source by measuring pulse durations down to 13 fs FWHM.
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