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Attosecond time–energy structure of X-ray free electronlaser pulsesстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Hartmann N., Hartmann G., Heider R., Wagner M.S., Ilchen M., Buck J., Lindahl A.O., Benko C., Grünert J., Krzywinski J., Liu J., Lutman A.A., Marinelli A., Maxwell T., Miahnahri A.A., Moeller S.P., Planas M., Robinson J., Kazansky A.K., Kabachnik N.M., Viefhaus J., Feurer T., Kienberger R., Coffee R.N., Helml W.
- Журнал: Nature Photonics
- Год издания: 2018
- Издательство: Nature Pub. Group
- Местоположение издательства: United Kingdom
- DOI: 10.1038/s41566-018-0107-6
- Аннотация: The time–energy information of ultrashort X-ray free-electron laser pulses generated by the Linac Coherent Light Source is measured with attosecond resolution via angular streaking of neon 1s photoelectrons. The X-ray pulses promote electrons from the neon core level into an ionization continuum, where they are dressed with the electric field of a circularly polarized infrared laser. This induces characteristic modulations of the resulting photoelectron energy and angular distribution. From these modulations we recover the single-shot attosecond intensity structure and chirp of arbitrary X-ray pulses based on self-amplified spontaneous emission, which have eluded direct measurement so far. We characterize individual attosecond pulses, including their instantaneous frequency, and identify double pulses with well-defined delays and spectral properties, thus paving the way for X-ray pump/X-ray probe attosecond free-electron laser science.
- Добавил в систему: Кабачник Николай Мартинович