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Figure 5
Top: example of the spectral peak shift due to the variation of the seed laser wavelength using an optical parametric amplifier. These data have been used for the experimental determination of the PRESTO resolving power with good agreement with respect to the simulations. Bottom [reproduced from Allaria et al. (2012BB3), New J. Phys. 14, 113009; Copyright 2012, Institute of Physics]: reconstructed He absorption profile scanning the wavelength across the 1s–4p resonance at 52.2 nm (λFEL = λSEED/5). Dots: photomultiplier response versus calibrated wavelength. The comparison between the Gaussian fit of the He signal with a single-shot acquired by PRESTO confirms both the FEL bandwidth and the spectrometer calibration.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 23| Part 1| January 2016| Pages 35-42
doi:10.1107/S1600577515021116
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