title: Single-shot soft x-ray laser linewidth measurement using a grating interferometer.
abstract: The linewidth of a 14.7 nm wavelength Ni-like Pd soft x-ray laser was measured in a single shot using a soft x-ray diffraction grating interferometer. The instrument uses the time delay introduced by the gratings across the beam to measure the temporal coherence. The spectral linewidth of the 4d1S0-4p1P1 Ni-like Pd lasing line was measured to be Δλ/λ=3×10(-5) from the Fourier transform of the fringe visibility. This single shot linewidth measurement technique provides a rapid and accurate way to determine the temporal coherence of soft x-ray lasers that can contribute to the development of femtosecond plasma-based soft x-ray lasers.
authors.forename: Y
authors.initials: Y
authors.lastname: Wang
authors.forename: L
authors.initials: L
authors.lastname: Yin
authors.forename: S
authors.initials: S
authors.lastname: Wang
authors.forename: M C
authors.initials: MC
authors.lastname: Marconi
authors.forename: J
authors.initials: J
authors.lastname: Dunn
authors.forename: E
authors.initials: E
authors.lastname: Gullikson
authors.forename: J J
authors.initials: JJ
authors.lastname: Rocca