Attosecond spectral singularities in solid-state high-harmonic generation

Ayelet Julie Uzan; Gal Orenstein; Álvaro Jiménez-Galán; Chris McDonald; Rui E.F. Silva; Barry D. Bruner; Nikolai D. Klimkin; Valerie Blanchet; Talya Arusi-Parpar; Michael Krüger; Alexey N. Rubtsov; Olga Smirnova; Misha Ivanov; Binghai Yan; Thomas Brabec; Nirit Dudovich

doi:10.1038/s41566-019-0574-4

Attosecond spectral singularities in solid-state high-harmonic generation

Ayelet Julie Uzan, Gal Orenstein, Álvaro Jiménez-Galán, Chris McDonald, Rui E.F. Silva, Barry D. Bruner, Nikolai D. Klimkin, Valerie Blanchet, Talya Arusi-Parpar, Michael Krüger, Alexey N. Rubtsov, Olga Smirnova, Misha Ivanov, Binghai Yan, Thomas Brabec, Nirit Dudovich

Physics

Research output: Contribution to journal › Article › peer-review

122 Scopus citations

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.

Original language	English (US)
Pages (from-to)	183-187
Number of pages	5
Journal	Nature Photonics
Volume	14
Issue number	3
DOIs	https://doi.org/10.1038/s41566-019-0574-4
State	Published - Mar 1 2020

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

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Uzan, A. J., Orenstein, G., Jiménez-Galán, Á., McDonald, C., Silva, R. E. F., Bruner, B. D., Klimkin, N. D., Blanchet, V., Arusi-Parpar, T., Krüger, M., Rubtsov, A. N., Smirnova, O., Ivanov, M., Yan, B., Brabec, T., & 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

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title = "Attosecond spectral singularities in solid-state high-harmonic generation",

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.",

author = "Uzan, {Ayelet Julie} and Gal Orenstein and {\'A}lvaro Jim{\'e}nez-Gal{\'a}n and Chris McDonald and Silva, {Rui E.F.} and Bruner, {Barry D.} and Klimkin, {Nikolai D.} and Valerie Blanchet and Talya Arusi-Parpar and Michael Kr{\"u}ger and Rubtsov, {Alexey N.} and Olga Smirnova and Misha Ivanov and Binghai Yan and Thomas Brabec and Nirit Dudovich",

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Uzan, AJ, Orenstein, G, Jiménez-Galán, Á, McDonald, C, Silva, REF, Bruner, BD, Klimkin, ND, Blanchet, V, Arusi-Parpar, T, Krüger, M, Rubtsov, AN, Smirnova, O, Ivanov, M, Yan, B, Brabec, T & Dudovich, N 2020, 'Attosecond spectral singularities in solid-state high-harmonic generation', Nature Photonics, vol. 14, no. 3, pp. 183-187. https://doi.org/10.1038/s41566-019-0574-4

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AU - Orenstein, Gal

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AU - McDonald, Chris

AU - Silva, Rui E.F.

AU - Bruner, Barry D.

AU - Klimkin, Nikolai D.

AU - Blanchet, Valerie

AU - Arusi-Parpar, Talya

AU - Krüger, Michael

AU - Rubtsov, Alexey N.

AU - Smirnova, Olga

AU - Ivanov, Misha

AU - Yan, Binghai

AU - Brabec, Thomas

AU - Dudovich, Nirit

PY - 2020/3/1

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N2 - 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.

AB - 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.

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Attosecond spectral singularities in solid-state high-harmonic generation

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