Attosecond spectral singularities in solid-state high-harmonic generation
Uzan AJ, Orenstein G, Jimenez-Galan A, Mcdonald C, Silva REF, Bruner BD, Klimkin ND, Blanchet V, Arusi-Parpar T, Kruger M, Rubtsov AN, Smirnova O, Ivanov M, Yan B, Brabec T, Dudovich N (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 14
Pages Range: 183-187
Journal Issue: 3
DOI: 10.1038/s41566-019-0574-4
Abstract
Strong-field-driven electric currents in condensed-matter systems are opening new frontiers in petahertz electronics. In this regime, new challenges are arising as the roles of band structure and coherent electron–hole dynamics have yet to be resolved. Here, by using high-harmonic generation spectroscopy, we reveal the underlying attosecond dynamics that dictates the temporal evolution of carriers in multi-band solid-state systems. We demonstrate that when the electron–hole relative velocity approaches zero, enhanced constructive interference leads to the appearance of spectral caustics in the high-harmonic generation spectrum. We introduce the role of the dynamical joint density of states and identify its mapping into the spectrum, which exhibits singularities at the spectral caustics. By studying these singularities, we probe the structure of multiple unpopulated high conduction bands.
Involved external institutions
Weizmann Institute of Science
Israel (IL)
Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie im Forschungsverbund Berlin e.V. / Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy
Germany (DE)
University of Ottawa
Canada (CA)
Universidad Autónoma de Madrid (UAM)
Spain (ES)
Russian Quantum Center
Russian Federation (RU)
Institut national de physique nucléaire et de physique des particules (IN2P3)
France (FR)
Israel (IL)
Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie im Forschungsverbund Berlin e.V. / Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy
Germany (DE)
University of Ottawa
Canada (CA)
Universidad Autónoma de Madrid (UAM)
Spain (ES)
Russian Quantum Center
Russian Federation (RU)
Institut national de physique nucléaire et de physique des particules (IN2P3)
France (FR)
How to cite
APA:
Uzan, A.J., Orenstein, G., Jimenez-Galan, A., Mcdonald, C., Silva, R.E.F., Bruner, B.D.,... Dudovich, N. (2020). Attosecond spectral singularities in solid-state high-harmonic generation. Nature Photonics, 14(3), 183-187. https://doi.org/10.1038/s41566-019-0574-4
MLA:
Uzan, Ayelet Julie, et al. "Attosecond spectral singularities in solid-state high-harmonic generation." Nature Photonics 14.3 (2020): 183-187.
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