This data can be used to create figure 4 of the nonlinear thin-film interferometry manuscript.

The folder titled "240423_PulseCharacterisation_1200grating" contains the spectral data (wavelength and intensity) at each position of the delay line that is outside interferometer. The title of each text file is the delay line position in millimetres (e.g. 94-8300 is 94.830 mm) and the exposure time (always 2 s). The following numbers 1-31 correspond to the nominal piezo voltages of the dithered mirror within the interferometer listed in "PiezoVoltages_0-33VnonSteps.txt".

The file "Background_PbBlocked_02000ms_1.txt" contains a background measurement with just the seed/probe beam (1500 nm) blocked. 

The folder titled "251114_ProcessedInterference_Spectral" is the processed data as presented in the manuscript. 