Determination of Electron Band Structure using Temporal Interferometry.
Phys Rev Lett
; 124(15): 157403, 2020 Apr 17.
Article
en En
| MEDLINE
| ID: mdl-32357017
ABSTRACT
We propose an all-optical method to directly reconstruct the band structure of semiconductors. Our scheme is based on the temporal Young's interferometer realized by high harmonic generation with a few-cycle laser pulse. As a time-energy domain interferometer, temporal interference encodes the band structure into the fringe in the energy domain. The relation between the band structure and the emitted harmonic frequencies is established. This enables us to retrieve the band structure from the spectrum of high harmonic generation with a single-shot measurement. Our scheme paves the way to study matters under ambient conditions and to track the ultrafast modification of band structures.
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MEDLINE
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En
Revista:
Phys Rev Lett
Año:
2020
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Article
País de afiliación:
China