Role of Van Hove singularities and effective mass anisotropy in polarization-resolved high harmonic spectroscopy of silicon.
| Title: | Role of Van Hove singularities and effective mass anisotropy in polarization-resolved high harmonic spectroscopy of silicon. |
|---|---|
| Authors: | Suthar, Pawan1 (AUTHOR), Trojánek, František1 (AUTHOR), Malý, Petr1 (AUTHOR), Derrien, Thibault J.-Y.2 (AUTHOR), Kozák, Martin1 (AUTHOR) kozak@karlov.mff.cuni.cz |
| Source: | Communications Physics. 11/18/2022, Vol. 5 Issue 1, p1-8. 8p. |
| Subject Terms: | *TIME-dependent density functional theory, *NONLINEAR optical materials, *ANISOTROPY, *HARMONIC generation, *LIGHT sources, *NONLINEAR optical spectroscopy, *NUMERICAL calculations |
| Geographic Terms: | VAN (Turkey) |
| Abstract: | Nonlinear optical response of materials exposed to strong nonresonant light fields leads to production of high energy photons whose spectra contain fingerprints of the coherent electron dynamics in the material. In this paper we investigate how the high harmonic spectra generated in crystalline silicon are linked to specific properties of its band structure. By comparing the polarization anisotropy of high harmonic spectra for two distinct frequencies of the driving pulses we show that the anisotropy has two sources. When driven by mid-infrared light, the signal at specific photon energies is enhanced by the presence of Van Hove singularities in the joint density of states of silicon. With near-infrared driving pulses, in contrast, the high harmonic yield is mainly influenced by the anisotropy of the reduced mass of electron-hole pair, which is related to the nonresonant excitation probability. The experimental results are compared with numerical calculations using time-dependent density functional theory. High harmonic generation in solids has been intensively studied for compact extreme ultraviolet light sources and for understanding of the inner workings of solids. In this study, the authors conducted polarization-resolved nonlinear spectroscopy of silicon with numerical calculations and uncovered the significant influence of van Hove singularities on the processes of high harmonic generation. [ABSTRACT FROM AUTHOR] |
| Copyright of Communications Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Academic Search Complete |
| FullText | Links: – Type: other Text: Availability: 0 CustomLinks: – Url: https://resolver.ebsco.com/c/xy5jbn/result?sid=EBSCO:a9h&genre=article&issn=23993650&ISBN=&volume=5&issue=1&date=20221118&spage=1&pages=1-8&title=Communications Physics&atitle=Role%20of%20Van%20Hove%20singularities%20and%20effective%20mass%20anisotropy%20in%20polarization-resolved%20high%20harmonic%20spectroscopy%20of%20silicon.&aulast=Suthar%2C%20Pawan&id=DOI:10.1038/s42005-022-01075-y Name: Full Text Finder (for New FTF UI) (s8985755) Category: fullText Text: Find It @ SCU Libraries MouseOverText: Find It @ SCU Libraries |
|---|---|
| Header | DbId: a9h DbLabel: Academic Search Complete An: 160295009 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Role of Van Hove singularities and effective mass anisotropy in polarization-resolved high harmonic spectroscopy of silicon. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Suthar%2C+Pawan%22">Suthar, Pawan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Trojánek%2C+František%22">Trojánek, František</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Malý%2C+Petr%22">Malý, Petr</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Derrien%2C+Thibault+J%2E-Y%2E%22">Derrien, Thibault J.-Y.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kozák%2C+Martin%22">Kozák, Martin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kozak@karlov.mff.cuni.cz</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Communications+Physics%22">Communications Physics</searchLink>. 11/18/2022, Vol. 5 Issue 1, p1-8. 8p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22TIME-dependent+density+functional+theory%22">TIME-dependent density functional theory</searchLink><br />*<searchLink fieldCode="DE" term="%22NONLINEAR+optical+materials%22">NONLINEAR optical materials</searchLink><br />*<searchLink fieldCode="DE" term="%22ANISOTROPY%22">ANISOTROPY</searchLink><br />*<searchLink fieldCode="DE" term="%22HARMONIC+generation%22">HARMONIC generation</searchLink><br />*<searchLink fieldCode="DE" term="%22LIGHT+sources%22">LIGHT sources</searchLink><br />*<searchLink fieldCode="DE" term="%22NONLINEAR+optical+spectroscopy%22">NONLINEAR optical spectroscopy</searchLink><br />*<searchLink fieldCode="DE" term="%22NUMERICAL+calculations%22">NUMERICAL calculations</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22VAN+%28Turkey%29%22">VAN (Turkey)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Nonlinear optical response of materials exposed to strong nonresonant light fields leads to production of high energy photons whose spectra contain fingerprints of the coherent electron dynamics in the material. In this paper we investigate how the high harmonic spectra generated in crystalline silicon are linked to specific properties of its band structure. By comparing the polarization anisotropy of high harmonic spectra for two distinct frequencies of the driving pulses we show that the anisotropy has two sources. When driven by mid-infrared light, the signal at specific photon energies is enhanced by the presence of Van Hove singularities in the joint density of states of silicon. With near-infrared driving pulses, in contrast, the high harmonic yield is mainly influenced by the anisotropy of the reduced mass of electron-hole pair, which is related to the nonresonant excitation probability. The experimental results are compared with numerical calculations using time-dependent density functional theory. High harmonic generation in solids has been intensively studied for compact extreme ultraviolet light sources and for understanding of the inner workings of solids. In this study, the authors conducted polarization-resolved nonlinear spectroscopy of silicon with numerical calculations and uncovered the significant influence of van Hove singularities on the processes of high harmonic generation. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Communications Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://login.libproxy.scu.edu/login?url=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=a9h&AN=160295009 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1038/s42005-022-01075-y Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 1 Subjects: – SubjectFull: VAN (Turkey) Type: general – SubjectFull: TIME-dependent density functional theory Type: general – SubjectFull: NONLINEAR optical materials Type: general – SubjectFull: ANISOTROPY Type: general – SubjectFull: HARMONIC generation Type: general – SubjectFull: LIGHT sources Type: general – SubjectFull: NONLINEAR optical spectroscopy Type: general – SubjectFull: NUMERICAL calculations Type: general Titles: – TitleFull: Role of Van Hove singularities and effective mass anisotropy in polarization-resolved high harmonic spectroscopy of silicon. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Suthar, Pawan – PersonEntity: Name: NameFull: Trojánek, František – PersonEntity: Name: NameFull: Malý, Petr – PersonEntity: Name: NameFull: Derrien, Thibault J.-Y. – PersonEntity: Name: NameFull: Kozák, Martin IsPartOfRelationships: – BibEntity: Dates: – D: 18 M: 11 Text: 11/18/2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 23993650 Numbering: – Type: volume Value: 5 – Type: issue Value: 1 Titles: – TitleFull: Communications Physics Type: main |
| ResultId | 1 |