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Figure 1
Overview of the timing diagnostics. The lower part with bold lines shows the cross-correlator, including a path to create laser-generated white light in order to set up the sum-frequency generation process. The interference filter is generally only used for setup. The FROG is for monitoring the temporal amplitude and phase of the laser pulse. The photodiodes (PD) are used for the RF-based timing monitor. A UV pulse is generated for an X-ray streak camera that is triggered by a photo-conductive switch. The abbreviations in the figure are as follows. RR: retroreflector; WLG: white-light generation; WL: white light; BBO: beta barium borate non-linear crystal; 2ω indicates frequency doubling and 3ω indicates mixing of the fundamental and the doubled radiation; DCX: double convex lens; CL: cylindrical lens; 2D: two-dimensional detector; BS: beam splitter; M: mirror; FROG: frequency-resolved optical gating; WP: wave-plate; GD: group delay compensation plate; PD: photodiode; PS: photo-conductive switch; IF355: 355 nm interference filter used to select the cross-correlator signal.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 4| July 2025| Pages 1052-1058
https://doi.org/10.1107/S1600577525003479
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