High-harmonic spectroscopy of strongly bound excitons in solids

Jensen, S. V. B.; Madsen, L. B.; Rubio, A.; Tancogne-Dejean, N.

doi:10.1103/PhysRevA.109.063104

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High-harmonic spectroscopy of strongly bound excitons in solids

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Rubio, A.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science Institute;
Center for Computational Quantum Physics (CCQ), The Flatiron Institute;

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Tancogne-Dejean, N.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science Institute;

External Resource

https://arxiv.org/abs/2307.14693
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https://doi.org/10.1103/PhysRevA.109.063104
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PhysRevA.109.063104.pdf
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引用

Jensen, S. V. B., Madsen, L. B., Rubio, A., & Tancogne-Dejean, N. (2024). High-harmonic spectroscopy of strongly bound excitons in solids. Physical Review A, 109(6):. doi:10.1103/PhysRevA.109.063104.

引用: https://hdl.handle.net/21.11116/0000-000D-80E0-4

要旨

We explore the nonlinear response of ultrafast strong-field-driven excitons in a one-dimensional solid with ab initio simulations. We demonstrate from our simulations and analytical model that a finite population of excitons imprints unique signatures to the high-harmonic spectra of materials. We show the exciton population can be retrieved from the spectra. We further demonstrate signatures of exciton recombination and that a shift of the exciton level is imprinted into the harmonic signal. The results open the door to high-harmonic spectroscopy of excitons in condensed-matter systems.