Data for: "Photoelectron interferometry with spectrally shaped polychromatic infrared pulses" Data for: "Photoelectron interferometry with spectrally shaped polychromatic infrared pulses" 2026-255-1 https://doi.org/10.5878/8f7p-tt33 Swedish National Data Service Svensk nationell datatjänst Landing page Data for: "Photoelectron interferometry with spectrally shaped polychromatic infrared pulses" Data for: "Photoelectron interferometry with spectrally shaped polychromatic infrared pulses" 2026-255-1 https://doi.org/10.5878/8f7p-tt33 10.48550/ARXIV.2608.28486 Boati, Edoardo Alberto Boati, Edoardo Alberto Amitzböll, Mattias Amitzböll, Mattias Arvidsson, Gustav Arvidsson, Gustav Weissenbilder, Robin Weissenbilder, Robin Busto, David Busto, David Shiriaeva, Viktoriia Shiriaeva, Viktoriia 2020-03315 2020-03315 2021-04691 2021-04691 2023-04603 2023-04603 2023-03464 2023-03464 2025-03729 2025-03729 871124 884900 101168628 ANR24-RRII-0004-IntriQ-ATTO 2017.0104 2024.0120 2023-06502 2023-06502 12450402 12134005 ANR-24-CE29-0141-EPAD Swedish National Data Service Svensk nationell datatjänst Landing page This dataset contains the experimental and numerical data underlying the figures presented in the article “Photoelectron interferometry with spectrally shaped polychromatic infrared pulses”. The study investigates laser-assisted photoelectron interferometry using an extreme-ultraviolet (XUV) pulse and a spectrally shaped infrared (IR) probe field composed of five spectral components forming a Golomb ruler in the frequency domain. The experimental data include photoelectron spectra recorded as a function of the relative time delay between the XUV and IR pulses as we measured them, without additional changes related to the data analysis. The dataset also contains results from numerical calculations based on the strong-field approximation (SFA) and the time-dependent Schrödinger equation (TDSE). The data associated with the figures are provided in CSV format and a txt file called 'ReadMe' is provided as a guide though the different files containing the data. Detta dataset innehåller de experimentella och numeriska data som ligger till grund för figurerna i artikeln “Photoelectron interferometry with spectrally shaped polychromatic infrared pulses”. Studien undersöker laserassisterad fotoelektroninterferometri med hjälp av en extremultraviolett (XUV) puls och ett spektralt format infrarött (IR) probfält som består av fem spektrala komponenter vilka bildar en Golomb-linjal i frekvensdomänen. De experimentella data omfattar fotoelektronspektra registrerade som en funktion av den relativa tidsfördröjningen mellan XUV- och IR-pulserna, i den form de uppmättes, utan ytterligare förändringar relaterade till dataanalysen. Datasetet innehåller även resultat från numeriska beräkningar baserade på starkfältsapproximationen (SFA) och den tidsberoende Schrödingerekvationen (TDSE). Data som hör till figurerna tillhandahålls i CSV-format. En TXT-fil med namnet “ReadMe” medföljer som vägledning till de olika filer som innehåller data. Numeric Data were collected using laser-assisted photoelectron interferometry in helium. Extreme-ultraviolet (XUV) attosecond pulse trains were generated by high-order harmonic generation in argon using a Ti:sapphire laser. A synchronized infrared (IR) probe field was shaped using a 4f pulse shaper to produce five narrow spectral components arranged as a Golomb ruler in the frequency domain. The XUV and IR pulses were overlapped in a helium gas jet, and the kinetic energies of the emitted photoelectrons were measured using a two-metre-long magnetic-bottle electron spectrometer. Scanning the relative delay between the pulses produced photoelectron spectrograms as a function of energy and time delay. The spectrograms were analysed using Fourier transforms along the delay axis and fitting of oscillatory components to extract interference frequencies, amplitudes and phases. Measured IR spectra were used to normalize the extracted amplitudes for the spectral amplitudes of the probe field.Data were collected using laser-assisted photoelectron interferometry in helium. Extreme-ultraviolet (XUV) attosecond pulse trains were generated by high-order harmonic generation in argon using a Ti:sapphire laser. A synchronized infrared (IR) probe field was shaped using a 4f pulse shaper to produce five narrow spectral components arranged as a Golomb ruler in the frequency domain. The XUV and IR pulses were overlapped in a helium gas jet, and the kinetic energies of the emitted photoelectrons were measured using a two-metre-long magnetic-bottle electron spectrometer. Scanning the relative delay between the pulses produced photoelectron spectrograms as a function of energy and time delay. The spectrograms were analysed using Fourier transforms along the delay axis and fitting of oscillatory components to extract interference frequencies, amplitudes and phases. Measured IR spectra were used to normalize the extracted amplitudes for the spectral amplitudes of the probe field. ExperimentExperiment ExperimentExperiment Access to data through SND. Data are freely accessible. Åtkomst till data via SND. Data är fritt tillgängliga. openAccess Boati, E. A., Arvidsson, G., Ammitzböll, M., Maroju, P. K., Lévêque, C., Weissenbilder, R., Shiriaeva, V., Laurell, H., Li, M., Wang, H., Dittel, C., Canhota, M., Guo, C., Taïeb, R., Caillat, J., Squibb, R. J., Feifel, R., Gisselbrecht, M., Arnold, C. L., … Busto, D. (2026). Photoelectron interferometry with spectrally shaped polychromatic infrared pulses (Version 1). arXiv. https://doi.org/10.48550/ARXIV.2608.28486 Boati, E. A., Arvidsson, G., Ammitzböll, M., Maroju, P. K., Lévêque, C., Weissenbilder, R., Shiriaeva, V., Laurell, H., Li, M., Wang, H., Dittel, C., Canhota, M., Guo, C., Taïeb, R., Caillat, J., Squibb, R. J., Feifel, R., Gisselbrecht, M., Arnold, C. L., … Busto, D. (2026). Photoelectron interferometry with spectrally shaped polychromatic infrared pulses (Version 1). arXiv. https://doi.org/10.48550/ARXIV.2608.28486 10.48550/ARXIV.2608.28486 2026