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Título
Ultrafast sub-nanometer matter-wave temporal Talbot effect
Autor(es)
Materia
Attophysics
Low-dimensional solids
High harmonic generation
Matter-wave optics
Talbot imaging
Intense fields
High harmonic spectroscopy
Matter-wave optics
Fecha de publicación
2021-09
Citación
García-Cabrera, A. et al (2021). Ultrafast sub-nanometer matter-wave temporal Talbot effect. New J. Phys. 23 093011. https://doi.org/10.1088/1367-2630/ac1fcc
Resumen
[EN]The coherent manipulation of the electron wavefunction at the atomic spatial and temporal scales is the fundamental breakthrough underlying far-reaching ultrafast phenomena as high-order harmonic radiation and attosecond pulse generation. In this work, we present a next step in the coherent control of matter waves by translating the concept of Talbot interferometry to the subnanomenter–femtosecond realm.We study the high-harmonic emission from a periodic system irradiated by an intense mid-infrared laser beam at grazing incidence. Our calculations show that Bloch electrons, once ionized, follow a sequence of ultrafast (femtosecond) revivals associated with the temporal Talbot effect. We demonstrate that these revivals leave a distinct signature in the high-frequency harmonic spectrum, in the form of structures extending beyond the main spectral cutoff, toward the x-rays. The reinterpretation of the process of high-order harmonic generation as the temporal realization of a Talbot–Lau interferometer suggests high-harmonic spectroscopy as an appropriate scheme to develop subnanometer ultrafast Talbot interferometry.
URI
DOI
10.1088/1367-2630/ac1fcc
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