title: Calibrated time-resolved transmission grating spectrometer for the study of ultrafast x-ray sources.
abstract: A transmission grating spectrometer has been coupled to a high-temporal-resolution soft x-ray streak camera for the study of picosecond laser-plasma x-ray sources. A procedure to deconvolve the overlapping contributions of diffraction orders and to calibrate the instrument has been established in order to obtain absolute time-resolved x-ray emission spectra in the 0.1-1.2 keV spectral region. The deconvolution and calibration techniques are presented along with measurements establishing the temporal resolution of this diagnostic at ~2 ps. Examples of calibrated spectra of laser-plasma x-ray sources created by 400 fs laser pulses at intensities of 1018 W/cm2 are also shown.
authors.affiliation: INRS-Énergie et Matériaux, P.O. Box 1020, Varennes, Québec J3X 1S2, Canada.
authors.forename: J F
authors.initials: JF
authors.lastname: Pelletier
authors.forename: M
authors.initials: M
authors.lastname: Chaker
authors.forename: J C
authors.initials: JC
authors.lastname: Kieffer