Data for Slow Light Nanocoatings for Ultrashort Pulse Compression

Data for Slow light nanocoatings for ultrashort pulse compressionM. Ossiander1,* Y.-W. Huang1,2, W. T. Chen1, Z. Wang3, X. Yin1, Y. A. Ibrahim1,4, M. Schultze3, F. Capasso1*1 John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford St, Cambridge, MA 02138, USA. 2 Department of Photonics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.3 Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria.4 University of Waterloo, Waterloo, ON N2L 3G1, Canada.* Corresponding Authors: [e-mail], [e-mail] published in Nature Communications 12, 6518 (2021), https://www.nature.com/articles/s41467-021-26920-6Details of the data files are described below and in the description.txt files. Methods are described in the publication.-- Folder frog_data: This folder contains the frequency resolved optical gating data for the 162 nm nanopillar diameter coating.Reference data for the incoming femtosecond laser pulses and the incoming laser pulses transmitted through the uncoated substrate only are also provided.The variables in the files are:wavelength_nm: wavelength axis for frequency resolved optical gating spectrogram in nanometers.delay_fs: delay axis for the frequency resolved optical gating spectrogram in femtoseconds.spectrogram: the raw frequency resolved optical gating spectrogram in arbitrary units.Folder white_light_data: This folder contains the raw white light interferometer data.Folders are named according to the nanopillar diameter of the examined compressor coating.For each coating, reference data of the empty interferometer, and reference data of the substrate in one interferometer arm (double pass) is also provided.The variables in the files are:wavelength: wavelength axis for the recorded spectral intensities in nanometers.background: Spectral intensity after the interferometer with both interferometer arms blocked in arbitrary units.A: Spectral intensity after the interferometer with sample arm blocked in arbitrary units.B: Spectral intensity after the interferometer with reference arm blocked in arbitrary units.AB: Spectral intensity after the interferometer in arbitrary units.wavelengthGD: wavelength axis for the calculated group delay in nanometers.frequencyGD: frequency axis for the calculated group delay in petahertz.GDnm: calculated group delay in femtoseconds (plot versus wavelengthGD).GDPHz: calculated group delay in femtoseconds (plot versus frequencyGD).