Extended Data Fig. 6: Detector Q map calibration.

(a) Example of the scattering intensity of the Bragg peak from SrTiO₃ measured with the area detector in our experiment. The axis labels are the pixel indexes. (b) shows the LaB6 powder scattering rings from the probe pulse, overlapped with the documented ring positions (solid curves) with the calibrated detector position and distance. The numbers indicate the angular wavenumber measured in Å⁻¹ for the documented ring positions for LaB₆. (c) and (d) show the LaB6 powder scattering rings from the two crossing pump pulses, overlapped with the documented ring positions with the calibrated detector position and distance.